refactor(layout): improve module header and sidebar toggle UX

src/app/(modules)/_components/module-shell-header.tsx

@@ -0,0 +1,27 @@
+'use client';
+
+import { BreadcrumbBasic } from '@/components/app-breadcrumb';
+import { ModeToggle } from '@/components/mode-toogle';
+import { Separator } from '@/components/ui/separator';
+import { SidebarTrigger, useSidebar } from '@/components/ui/sidebar';
+
+export function ModuleShellHeader() {
+  const { isMobile } = useSidebar();
+
+  return (
+    <div className="sticky top-0 z-50 flex items-center justify-between gap-4 border-b border-border bg-background/95 px-6 py-3 backdrop-blur supports-[backdrop-filter]:bg-background/80">
+      <div className="flex min-w-0 items-center gap-3">
+        {isMobile ? (
+          <>
+            <SidebarTrigger className="shrink-0 bg-background/80 text-muted-foreground shadow-xs backdrop-blur-sm" />
+            <Separator orientation="vertical" className="h-4 shrink-0" />
+          </>
+        ) : null}
+        <div className="min-w-0">
+          <BreadcrumbBasic />
+        </div>
+      </div>
+      <ModeToggle />
+    </div>
+  );
+}

src/app/(modules)/layout.tsx

@@ -1,10 +1,8 @@
-import { BreadcrumbBasic } from '@/components/app-breadcrumb';
 import { AppSidebar } from '@/components/app-sidebar';
-import { ModeToggle } from '@/components/mode-toogle';
-import { SidebarProvider, SidebarTrigger } from '@/components/ui/sidebar';
-import { Separator } from '@/components/ui/separator';
+import { SidebarProvider } from '@/components/ui/sidebar';
 import { AuthGuard } from '@/guards';
 import React from 'react';
+import { ModuleShellHeader } from './_components/module-shell-header';
 
 const ModulesLayout = ({
   children,
@@ -15,16 +13,11 @@ const ModulesLayout = ({
     <AuthGuard>
       <SidebarProvider>
         <AppSidebar />
-        <main className="flex flex-1 flex-col w-full h-screen overflow-hidden">
+        <main className="flex flex-1 h-screen w-full flex-col overflow-hidden">
           <div className="scroll-stable flex-1 overflow-auto">
-            <div className="max-w-380 mx-auto w-full flex flex-col min-h-full">
-              <div className="flex gap-3 items-center sticky top-0 bg-background z-50 py-3 px-6 border-b border-border">
-                <SidebarTrigger />
-                <ModeToggle />
-                <Separator orientation="vertical" className="mx-2 h-4" />
-                <BreadcrumbBasic />
-              </div>
-              <div className="p-6 flex-1">{children}</div>
+            <div className="mx-auto flex min-h-full w-full max-w-380 flex-col">
+              <ModuleShellHeader />
+              <div className="flex-1 p-6">{children}</div>
             </div>
           </div>
         </main>

src/app/(modules)/results/hooks/useVideoResults.ts

@@ -4,6 +4,7 @@ import { useEffect, useState } from 'react';
 import { useQuery } from '@tanstack/react-query';
 
 import { videoService } from '@/services/api';
+import type { VideoAnnotationFramesParams } from '@/types';
 
 import { videoKeys } from '../queries/videoKeys';
 
@@ -18,6 +19,20 @@ export function useVideoResultsQuery(videoId: string | undefined) {
   });
 }
 
+export function useVideoAnnotationFramesQuery(
+  videoId: string | undefined,
+  params: VideoAnnotationFramesParams,
+) {
+  return useQuery({
+    queryKey: videoKeys.annotationFrames(videoId ?? '', params),
+    queryFn: () =>
+      videoService.getVideoAnnotationFrames(videoId as string, params),
+    enabled: Boolean(videoId),
+    staleTime: 1000 * 60 * 5,
+    gcTime: 1000 * 60 * 30,
+  });
+}
+
 /**
  * Download the annotated video through the authenticated axios client and
  * expose a local object URL that the native `<video>` element can play.
@@ -26,10 +41,10 @@ export function useVideoResultsQuery(videoId: string | undefined) {
  * directly is what fixes the 401. The browser cannot attach the Bearer token to
  * a media request, but axios can.
  */
-export function useAnnotatedVideoQuery(url: string | undefined) {
+export function useProtectedVideoQuery(url: string | undefined) {
   const query = useQuery({
     queryKey: videoKeys.annotatedVideo(url ?? ''),
-    queryFn: () => videoService.getAnnotatedVideo(url as string),
+    queryFn: () => videoService.getProtectedVideo(url as string),
     enabled: Boolean(url),
     staleTime: Infinity,
     gcTime: 1000 * 60 * 30,
@@ -59,3 +74,5 @@ export function useAnnotatedVideoQuery(url: string | undefined) {
     refetch: query.refetch,
   };
 }
+
+export const useAnnotatedVideoQuery = useProtectedVideoQuery;

src/app/(modules)/results/queries/videoKeys.ts

@@ -2,6 +2,10 @@ export const videoKeys = {
   all: ['videos'] as const,
   results: () => [...videoKeys.all, 'results'] as const,
   result: (videoId: string) => [...videoKeys.results(), videoId] as const,
+  annotationFrames: (
+    videoId: string,
+    params: { start_time_ms: number; end_time_ms: number },
+  ) => [...videoKeys.result(videoId), 'annotation-frames', params] as const,
   annotatedVideos: () => [...videoKeys.all, 'annotated'] as const,
   annotatedVideo: (url: string) =>
     [...videoKeys.annotatedVideos(), url] as const,

src/app/(modules)/ticket/[ticketId]/components/TicketClassDetectionPreview.tsx

@@ -184,9 +184,9 @@ export function TicketClassDetectionPreview({
             size="sm"
             onClick={() => setCurrentIndex((index) => Math.max(index - 1, 0))}
             disabled={isPreviousDisabled}
+            aria-label="Previous detection"
           >
             <ChevronLeft className="size-4" />
-            Previous
           </Button>
           <div className="min-w-16 text-center text-sm font-medium text-foreground">
             {detectionCount === 0
@@ -199,8 +199,8 @@ export function TicketClassDetectionPreview({
             size="sm"
             onClick={() => setCurrentIndex((index) => index + 1)}
             disabled={isNextDisabled}
+            aria-label="Next detection"
           >
-            Next
             <ChevronRight className="size-4" />
           </Button>
         </div>

src/app/(modules)/ticket/[ticketId]/components/TicketInlineAnalysisVideo.tsx

@@ -0,0 +1,68 @@
+'use client';
+
+import { useRef } from 'react';
+import type { MediaPlayerInstance } from '@vidstack/react';
+
+import { useProtectedVideoQuery } from '@/app/(modules)/results/hooks/useVideoResults';
+import AnnotatedVideoPlayer from '@/components/video/annotatedVideoPlayer';
+import { useVideoAnnotationPlayback } from '@/components/video/useVideoAnnotationPlayback';
+import type { TicketOverviewDetail } from '@/types';
+
+type TicketInlineAnalysisVideoProps = {
+  ticket: TicketOverviewDetail;
+};
+
+export function TicketInlineAnalysisVideo({
+  ticket,
+}: TicketInlineAnalysisVideoProps) {
+  const videoRef = useRef<MediaPlayerInstance | null>(null);
+  const videoId = ticket.video_id ?? ticket.video?.id ?? undefined;
+  const sourceUrl = ticket.video?.url ?? undefined;
+  const fps = ticket.video_metadata?.fps ?? 0;
+  const videoWidth = ticket.video_metadata?.resolution.width ?? 0;
+  const videoHeight = ticket.video_metadata?.resolution.height ?? 0;
+  const {
+    visibleDetections,
+    handleSeeked,
+    handleTimeUpdate,
+    handleVideoFrame,
+  } = useVideoAnnotationPlayback({
+    videoId,
+    logs: [],
+    fps,
+    videoRef,
+  });
+  const {
+    videoUrl,
+    isLoading: isVideoLoading,
+    isError: isVideoError,
+    refetch: refetchVideo,
+  } = useProtectedVideoQuery(sourceUrl);
+
+  if (!videoId || !sourceUrl) {
+    return (
+      <div className="rounded-lg border border-dashed bg-muted/20 px-4 py-8 text-sm text-muted-foreground">
+        Analysis video is unavailable for this ticket.
+      </div>
+    );
+  }
+
+  return (
+    <div className="space-y-2">
+      <AnnotatedVideoPlayer
+        videoRef={videoRef}
+        logs={[]}
+        visibleDetections={visibleDetections}
+        videoWidth={videoWidth}
+        videoHeight={videoHeight}
+        videoUrl={videoUrl}
+        isLoading={isVideoLoading}
+        isError={isVideoError}
+        onRetry={() => void refetchVideo()}
+        onTimeUpdate={handleTimeUpdate}
+        onVideoFrame={handleVideoFrame}
+        onSeeked={handleSeeked}
+      />
+    </div>
+  );
+}

src/app/(modules)/ticket/[ticketId]/components/TicketOverviewCard.tsx

@@ -2,7 +2,6 @@
 
 import {
   Activity,
-  ArrowRight,
   CalendarDays,
   Clock3,
   Gauge,
@@ -10,7 +9,7 @@ import {
   Monitor,
   UserRound,
 } from 'lucide-react';
-import { useRouter } from 'next/navigation';
+import { useState } from 'react';
 
 import {
   Card,
@@ -20,12 +19,20 @@ import {
   CardTitle,
 } from '@/components/ui/card';
 import { Button } from '@/components/ui/button';
+import {
+  Dialog,
+  DialogContent,
+  DialogDescription,
+  DialogHeader,
+  DialogTitle,
+} from '@/components/ui/dialog';
 import { getDefectVisual } from '@/constants/defectVisualConfig';
 import { PERMISSIONS } from '@/constants/permissions';
 import { PermissionGuard } from '@/guards';
 import { cn } from '@/lib/utils';
 import type { TicketOverviewDetail } from '@/types';
 import { formatDate } from '@/utils/date';
+import { TicketInlineAnalysisVideo } from './TicketInlineAnalysisVideo';
 
 type IconComponent = React.ComponentType<{ className?: string }>;
 
@@ -105,7 +112,7 @@ export function TicketOverviewCard({
 }: {
   ticket: TicketOverviewDetail;
 }) {
-  const router = useRouter();
+  const [isAnalysisOpen, setIsAnalysisOpen] = useState(false);
   const videoMetadata = ticket.video_metadata;
   const duration =
     typeof videoMetadata?.duration_seconds === 'number'
@@ -125,11 +132,9 @@ export function TicketOverviewCard({
   const uploaderName = ticket.uploader?.name || null;
   const analysisVideoId = ticket.video_id || ticket.video?.id || null;
   const videoName = ticket.video?.name || null;
+  const analysisTitle = videoName || ticket.ticket_name || 'Analysis Video';
   const hasVideoMetrics = Boolean(
-    videoName ||
-    videoMetadata?.fps ||
-    duration ||
-    videoMetadata?.resolution?.label,
+    videoMetadata?.fps || duration || videoMetadata?.resolution?.label,
   );
 
   return (
@@ -178,10 +183,9 @@ export function TicketOverviewCard({
                   variant="ghost"
                   size="sm"
                   className="text-primary hover:bg-primary/10 hover:text-primary"
-                  onClick={() => router.push(`/results/${analysisVideoId}`)}
+                  onClick={() => setIsAnalysisOpen(true)}
                 >
-                  View Analysis
-                  <ArrowRight className="size-3.5" />
+                  View Video
                 </Button>
               </PermissionGuard>
             </CardAction>
@@ -210,9 +214,6 @@ export function TicketOverviewCard({
           </div>
           {hasVideoMetrics ? (
             <div className="grid gap-3 rounded-lg bg-muted/35 px-4 py-3 text-sm sm:grid-cols-3">
-              {videoName ? (
-                <VideoMetric icon={Monitor} label={videoName} />
-              ) : null}
               {videoMetadata?.fps ? (
                 <VideoMetric icon={Gauge} label={`${videoMetadata.fps} FPS`} />
               ) : null}
@@ -229,6 +230,20 @@ export function TicketOverviewCard({
           ) : null}
         </CardContent>
       </Card>
+
+      <Dialog open={isAnalysisOpen} onOpenChange={setIsAnalysisOpen}>
+        <DialogContent className="gap-3 p-3 sm:max-w-5xl sm:p-4">
+          <DialogHeader className="min-w-0 pr-8">
+            <DialogTitle className="truncate text-left text-base">
+              {analysisTitle}
+            </DialogTitle>
+            <DialogDescription className="truncate text-xs">
+              Video analysis with annotation overlay
+            </DialogDescription>
+          </DialogHeader>
+          <TicketInlineAnalysisVideo ticket={ticket} />
+        </DialogContent>
+      </Dialog>
     </div>
   );
 }

src/app/(modules)/ticket/[ticketId]/components/actions/AssignTicketAction.tsx

@@ -1,9 +1,9 @@
 'use client';
 
-import { useState } from 'react';
+import { useMemo, useState } from 'react';
 import { Users, Mail, Phone, Send, ShieldCheck } from 'lucide-react';
 
-import { DatePicker } from '@/components/form/DatePicker';
+import { DatePickerSimple } from '@/components/form/DatePickerSimple';
 import { Button } from '@/components/ui/button';
 import { Label } from '@/components/ui/label';
 import { Textarea } from '@/components/ui/textarea';
@@ -21,6 +21,15 @@ export function AssignTicketAction({ ticket }: { ticket: TicketDetail }) {
   const [assignNote, setAssignNote] = useState('');
 
   const assignMutation = useAssignTicketMutation(ticket.id);
+  const today = useMemo(() => {
+    const date = new Date();
+    date.setHours(0, 0, 0, 0);
+    return date;
+  }, []);
+  const maxDueMonth = useMemo(
+    () => new Date(today.getFullYear() + 5, 11),
+    [today],
+  );
 
   return (
     <TicketActionCard icon={Users} title="Assign to Contractor">
@@ -56,13 +65,20 @@ export function AssignTicketAction({ ticket }: { ticket: TicketDetail }) {
           </div>
         ) : null}
         <div className="space-y-2">
-          <Label>Due Date *</Label>
-          <DatePicker
+          <Label htmlFor="assign-due-date">
+            Due Date <span className="text-destructive">*</span>
+          </Label>
+          <DatePickerSimple
+            id="assign-due-date"
             value={dueDate}
             onChange={setDueDate}
-            showTimeZone={false}
+            showLabel={false}
+            placeholder="Select due date"
             disabled={assignMutation.isPending}
             className="w-full"
+            startMonth={today}
+            endMonth={maxDueMonth}
+            disabledDates={{ before: today }}
           />
         </div>
         <div className="space-y-2">

src/components/annotation/boundingBoxOverlay.tsx

@@ -1,8 +1,8 @@
 import { getDefectVisual } from '@/constants/defectVisualConfig';
-import type { DetectionResultItem } from '@/types';
+import type { BoundingBoxOverlayItem } from '@/types';
 
 interface BoundingBoxOverlayProps {
-  detections: DetectionResultItem[];
+  detections: BoundingBoxOverlayItem[];
   videoWidth: number;
   videoHeight: number;
 }
@@ -23,7 +23,7 @@ export default function BoundingBoxOverlay({
       viewBox={`0 0 ${videoWidth} ${videoHeight}`}
       preserveAspectRatio="xMidYMid meet"
     >
-      {detections.map(({ id, detection }) => {
+      {detections.map((detection) => {
         const { bounding_box: box } = detection;
         const color = getDefectVisual(detection.class_name).boundingBoxColor;
         const label = `${detection.display_name} ${(detection.confidence * 100).toFixed(0)}%`;
@@ -31,7 +31,7 @@ export default function BoundingBoxOverlay({
         const labelWidth = Math.max(150, label.length * 17);
 
         return (
-          <g key={id}>
+          <g key={detection.id}>
             <rect
               x={box.x1}
               y={box.y1}

src/components/app-sidebar.tsx

@@ -18,16 +18,17 @@ import {
   Sidebar,
   SidebarContent,
   SidebarFooter,
+  SidebarGroup,
   SidebarHeader,
-  SidebarRail,
   SidebarMenu,
-  SidebarMenuItem,
   SidebarMenuButton,
+  SidebarMenuItem,
   SidebarMenuSub,
   SidebarMenuSubButton,
   SidebarMenuSubItem,
-  SidebarGroup,
-  SidebarGroupLabel,
+  SidebarRail,
+  SidebarTrigger,
+  useSidebar,
 } from '@/components/ui/sidebar';
 import Link from 'next/link';
 import { usePathname } from 'next/navigation';
@@ -41,6 +42,7 @@ function isRouteActive(pathname: string, path?: string) {
 export function AppSidebar({ ...props }: React.ComponentProps<typeof Sidebar>) {
   const pathname = usePathname();
   const { hasPermission } = usePermissions();
+  const { isMobile } = useSidebar();
   const authUser = useAppStore((state) => state.user);
   const navItems = filterMenuItems(menuItems, hasPermission);
   const user = {
@@ -53,17 +55,21 @@ export function AppSidebar({ ...props }: React.ComponentProps<typeof Sidebar>) {
 
   return (
     <Sidebar collapsible="icon" {...props}>
-      <SidebarHeader>
-        <div className="flex items-center gap-2 py-2">
-          <LogoWrapper size="sm" variant="sidebar" />
+      <SidebarHeader className="border-b border-sidebar-border px-3 py-3 group-data-[collapsible=icon]:items-center group-data-[collapsible=icon]:border-b-0 group-data-[collapsible=icon]:px-2">
+        <div className="flex h-8 w-full items-center gap-3 group-data-[collapsible=icon]:w-8 group-data-[collapsible=icon]:justify-center">
+          <SidebarBrandControl isMobile={isMobile} />
           <div className="grid flex-1 text-left text-sm leading-tight group-data-[collapsible=icon]:hidden">
             <span className="truncate font-semibold">RoadMonitor</span>
             <span className="truncate text-xs">Road Intelligence</span>
           </div>
+          <SidebarTrigger
+            className="ml-auto shrink-0 bg-sidebar/80 text-sidebar-foreground/80 hover:bg-sidebar-accent hover:text-sidebar-accent-foreground group-data-[collapsible=icon]:hidden"
+            aria-label={isMobile ? 'Close menu' : 'Hide menu'}
+          />
         </div>
       </SidebarHeader>
-      <SidebarContent>
-        <SidebarGroup>
+      <SidebarContent className="px-2 py-3">
+        <SidebarGroup className="p-0">
           <SidebarMenu>
             {navItems.map((item) => (
               <SidebarNavItem
@@ -75,7 +81,7 @@ export function AppSidebar({ ...props }: React.ComponentProps<typeof Sidebar>) {
           </SidebarMenu>
         </SidebarGroup>
       </SidebarContent>
-      <SidebarFooter>
+      <SidebarFooter className="border-t border-sidebar-border px-3 py-3">
         <NavUser user={user} />
       </SidebarFooter>
       <SidebarRail />
@@ -83,6 +89,23 @@ export function AppSidebar({ ...props }: React.ComponentProps<typeof Sidebar>) {
   );
 }
 
+function SidebarBrandControl({ isMobile }: { isMobile: boolean }) {
+  return (
+    <div className="group/sidebar-brand relative flex size-8 shrink-0 items-center justify-center">
+      <LogoWrapper
+        size="sm"
+        variant="sidebar"
+        className="transition-opacity duration-150 group-data-[collapsible=icon]:group-hover/sidebar-brand:opacity-0 group-data-[collapsible=icon]:group-focus-within/sidebar-brand:opacity-0"
+      />
+      <SidebarTrigger
+        tooltip="Open sidebar"
+        className="pointer-events-none absolute inset-0 bg-sidebar text-sidebar-foreground/80 opacity-0 shadow-none hover:bg-sidebar-accent hover:text-sidebar-accent-foreground group-data-[collapsible=icon]:pointer-events-auto group-data-[collapsible=icon]:group-hover/sidebar-brand:opacity-100 group-data-[collapsible=icon]:group-focus-within/sidebar-brand:opacity-100"
+        aria-label={isMobile ? 'Close menu' : 'Open menu'}
+      />
+    </div>
+  );
+}
+
 function SidebarNavItem({
   item,
   pathname,
@@ -159,4 +182,3 @@ function SidebarNavItem({
     </SidebarMenuItem>
   );
 }
-

src/components/form/DatePickerSimple.tsx

@@ -0,0 +1,129 @@
+'use client';
+
+import * as React from 'react';
+import type { Matcher } from 'react-day-picker';
+
+import { Button } from '@/components/ui/button';
+import { CalendarGridPicker } from '@/components/ui/calendar-grid-picker';
+import { FormField } from '@/components/form/FormField';
+import {
+  Popover,
+  PopoverContent,
+  PopoverTrigger,
+} from '@/components/ui/popover';
+import { cn } from '@/lib/utils';
+
+export interface DatePickerSimpleProps {
+  value?: Date;
+  defaultValue?: Date;
+  onChange?: (date: Date | undefined) => void;
+  label?: string;
+  placeholder?: string;
+  disabled?: boolean;
+  className?: string;
+  id?: string;
+  showLabel?: boolean;
+  startMonth?: Date;
+  endMonth?: Date;
+  disabledDates?: Matcher | Matcher[];
+}
+
+function startOfDay(date: Date) {
+  const next = new Date(date);
+  next.setHours(0, 0, 0, 0);
+  return next;
+}
+
+function clampDateToRange(date: Date, min: Date, max: Date) {
+  if (date < min) return min;
+  if (date > max) return max;
+  return date;
+}
+
+export function DatePickerSimple(props: DatePickerSimpleProps) {
+  const {
+    value,
+    defaultValue,
+    onChange,
+    label = 'Date of birth',
+    placeholder = 'Select date',
+    disabled = false,
+    className,
+    id = 'date',
+    showLabel = true,
+    startMonth,
+    endMonth,
+    disabledDates,
+  } = props;
+  const isControlled = Object.hasOwn(props, 'value');
+  const [open, setOpen] = React.useState(false);
+  const [internalDate, setInternalDate] = React.useState<Date | undefined>(
+    defaultValue,
+  );
+
+  const selectedDate = isControlled ? value : internalDate;
+  const today = React.useMemo(() => startOfDay(new Date()), []);
+  const resolvedStartMonth = React.useMemo(
+    () => startMonth ?? new Date(today.getFullYear() - 100, 0),
+    [startMonth, today],
+  );
+  const resolvedEndMonth = React.useMemo(
+    () => endMonth ?? today,
+    [endMonth, today],
+  );
+  const initialMonth = selectedDate
+    ? startOfDay(selectedDate)
+    : clampDateToRange(today, resolvedStartMonth, resolvedEndMonth);
+
+  const handleSelect = (date: Date | undefined) => {
+    if (!isControlled) setInternalDate(date);
+    onChange?.(date);
+    setOpen(false);
+  };
+
+  const picker = (
+    <Popover
+      open={open}
+      onOpenChange={(nextOpen) => {
+        setOpen(nextOpen);
+      }}
+    >
+      <PopoverTrigger asChild>
+        <Button
+          type="button"
+          variant="outline"
+          id={id}
+          disabled={disabled}
+          data-empty={!selectedDate}
+          className="w-full justify-start font-normal data-[empty=true]:text-muted-foreground"
+        >
+          {selectedDate
+            ? selectedDate.toLocaleDateString(undefined, { dateStyle: 'long' })
+            : placeholder}
+        </Button>
+      </PopoverTrigger>
+      <PopoverContent className="w-auto overflow-hidden p-0" align="start">
+        <CalendarGridPicker
+          key={open ? 'open' : 'closed'}
+          mode="single"
+          selected={selectedDate}
+          defaultMonth={initialMonth}
+          startMonth={resolvedStartMonth}
+          endMonth={resolvedEndMonth}
+          disabled={disabledDates}
+          onSelect={handleSelect}
+        />
+      </PopoverContent>
+    </Popover>
+  );
+
+  if (!showLabel) {
+    return <div className={cn('w-full', className)}>{picker}</div>;
+  }
+
+  return (
+    <FormField id={id} label={label} className={className ?? 'mx-auto w-44'}>
+      {picker}
+    </FormField>
+  );
+}

src/components/form/index.ts

@@ -5,3 +5,5 @@ export { PhoneInput } from './phone-input/PhoneInput';
 export { SelectPopover } from './SelectPopover';
 export type { SelectPopoverOption } from './SelectPopover';
 export { PasswordField } from './PasswordField';
+export { DatePickerSimple } from './DatePickerSimple';
+export type { DatePickerSimpleProps } from './DatePickerSimple';

src/components/ui/calendar-grid-picker.tsx

@@ -0,0 +1,537 @@
+'use client';
+
+import * as React from 'react';
+import { ChevronLeftIcon, ChevronRightIcon } from 'lucide-react';
+import { useDayPicker, type MonthCaptionProps } from 'react-day-picker';
+
+import { cn } from '@/lib/utils';
+import { Button } from '@/components/ui/button';
+import { Calendar, CalendarDayButton } from '@/components/ui/calendar';
+
+type CalendarView = 'days' | 'months' | 'years';
+
+const MONTH_LABELS = [
+  'Jan',
+  'Feb',
+  'Mar',
+  'Apr',
+  'May',
+  'Jun',
+  'Jul',
+  'Aug',
+  'Sep',
+  'Oct',
+  'Nov',
+  'Dec',
+] as const;
+
+const PICKER_WIDTH = 'w-[280px]';
+const PICKER_SHELL_CLASS =
+  'group/calendar p-3 text-popover-foreground [--cell-size:--spacing(8)]';
+const PICKER_HEADER_CLASS =
+  'grid min-h-8 grid-cols-[2rem_1fr_2rem] items-center gap-1 border-b border-border pb-2';
+const PICKER_NAV_BUTTON_CLASS = 'size-8 shrink-0 p-0';
+const GRID_BUTTON_CLASS =
+  'h-9 w-full rounded-md font-medium text-foreground hover:bg-accent/60 hover:text-accent-foreground';
+const GRID_BUTTON_ACTIVE_CLASS =
+  'bg-muted text-foreground hover:bg-muted hover:text-foreground';
+const GRID_BUTTON_DISABLED_CLASS =
+  'text-muted-foreground opacity-50 hover:bg-transparent hover:text-muted-foreground';
+
+function getMonthIndex(date: Date) {
+  return date.getFullYear() * 12 + date.getMonth();
+}
+
+function isYearOutsideRange(year: number, startMonth?: Date, endMonth?: Date) {
+  if (startMonth && year < startMonth.getFullYear()) return true;
+  if (endMonth && year > endMonth.getFullYear()) return true;
+  return false;
+}
+
+function isMonthOutsideRange(
+  year: number,
+  month: number,
+  startMonth?: Date,
+  endMonth?: Date,
+) {
+  const monthIndex = year * 12 + month;
+
+  if (startMonth && monthIndex < getMonthIndex(startMonth)) return true;
+  if (endMonth && monthIndex > getMonthIndex(endMonth)) return true;
+
+  return false;
+}
+
+function clampMonthToRange(
+  year: number,
+  month: number,
+  startMonth?: Date,
+  endMonth?: Date,
+) {
+  let nextMonth = month;
+
+  if (startMonth && year === startMonth.getFullYear()) {
+    nextMonth = Math.max(nextMonth, startMonth.getMonth());
+  }
+
+  if (endMonth && year === endMonth.getFullYear()) {
+    nextMonth = Math.min(nextMonth, endMonth.getMonth());
+  }
+
+  return Math.min(11, Math.max(0, nextMonth));
+}
+
+type CalendarGridPickerContextValue = {
+  view: CalendarView;
+  setView: (view: CalendarView) => void;
+  pickerYear: number;
+  setPickerYear: React.Dispatch<React.SetStateAction<number>>;
+  decadeStart: number;
+  setDecadeStart: React.Dispatch<React.SetStateAction<number>>;
+};
+
+const CalendarGridPickerContext =
+  React.createContext<CalendarGridPickerContextValue | null>(null);
+
+function useCalendarGridPicker() {
+  const context = React.useContext(CalendarGridPickerContext);
+  if (!context) {
+    throw new Error(
+      'useCalendarGridPicker must be used within CalendarGridPicker',
+    );
+  }
+  return context;
+}
+
+function PickerNav({
+  label,
+  onPrevious,
+  onNext,
+  onLabelClick,
+  disablePrevious = false,
+  disableNext = false,
+}: {
+  label: string;
+  onPrevious: () => void;
+  onNext: () => void;
+  onLabelClick?: () => void;
+  disablePrevious?: boolean;
+  disableNext?: boolean;
+}) {
+  return (
+    <div className={PICKER_HEADER_CLASS}>
+      <Button
+        type="button"
+        variant="ghost"
+        size="icon-sm"
+        className={cn(PICKER_NAV_BUTTON_CLASS, 'justify-self-start')}
+        onClick={onPrevious}
+        disabled={disablePrevious}
+        aria-label="Previous"
+      >
+        <ChevronLeftIcon className="size-4" />
+      </Button>
+      {onLabelClick ? (
+        <button
+          type="button"
+          className="rounded-sm px-2 text-center text-sm font-semibold text-foreground hover:text-accent-foreground focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-ring"
+          onClick={onLabelClick}
+        >
+          {label}
+        </button>
+      ) : (
+        <span className="px-2 text-center text-sm font-semibold text-foreground">
+          {label}
+        </span>
+      )}
+      <Button
+        type="button"
+        variant="ghost"
+        size="icon-sm"
+        className={cn(PICKER_NAV_BUTTON_CLASS, 'justify-self-end')}
+        onClick={onNext}
+        disabled={disableNext}
+        aria-label="Next"
+      >
+        <ChevronRightIcon className="size-4" />
+      </Button>
+    </div>
+  );
+}
+
+function MonthGrid({
+  year,
+  activeMonth,
+  onSelect,
+  startMonth,
+  endMonth,
+}: {
+  year: number;
+  activeMonth: number;
+  onSelect: (month: number) => void;
+  startMonth?: Date;
+  endMonth?: Date;
+}) {
+  return (
+    <div className="grid grid-cols-3 gap-x-2 gap-y-1.5 pt-2">
+      {MONTH_LABELS.map((label, month) => {
+        const isDisabled = isMonthOutsideRange(
+          year,
+          month,
+          startMonth,
+          endMonth,
+        );
+
+        return (
+          <Button
+            key={label}
+            type="button"
+            variant="ghost"
+            disabled={isDisabled}
+            className={cn(
+              GRID_BUTTON_CLASS,
+              isDisabled && GRID_BUTTON_DISABLED_CLASS,
+              activeMonth === month && !isDisabled && GRID_BUTTON_ACTIVE_CLASS,
+            )}
+            onClick={() => onSelect(month)}
+          >
+            {label}
+          </Button>
+        );
+      })}
+    </div>
+  );
+}
+
+function YearGrid({
+  decadeStart,
+  activeYear,
+  onSelect,
+  startMonth,
+  endMonth,
+}: {
+  decadeStart: number;
+  activeYear: number;
+  onSelect: (year: number) => void;
+  startMonth?: Date;
+  endMonth?: Date;
+}) {
+  const years = React.useMemo(
+    () => Array.from({ length: 10 }, (_, index) => decadeStart + index),
+    [decadeStart],
+  );
+
+  return (
+    <div className="grid grid-cols-2 gap-x-3 gap-y-1.5 pt-2">
+      {years.map((year) => {
+        const isDisabled = isYearOutsideRange(year, startMonth, endMonth);
+
+        return (
+          <Button
+            key={year}
+            type="button"
+            variant="ghost"
+            disabled={isDisabled}
+            className={cn(
+              GRID_BUTTON_CLASS,
+              isDisabled && GRID_BUTTON_DISABLED_CLASS,
+              activeYear === year && !isDisabled && GRID_BUTTON_ACTIVE_CLASS,
+            )}
+            onClick={() => onSelect(year)}
+          >
+            {year}
+          </Button>
+        );
+      })}
+    </div>
+  );
+}
+
+function CalendarMonthCaption({
+  calendarMonth,
+  className,
+  children: _children,
+  displayIndex: _displayIndex,
+  ...props
+}: MonthCaptionProps) {
+  const { goToMonth, previousMonth, nextMonth } = useDayPicker();
+  const { setView, setPickerYear, setDecadeStart } = useCalendarGridPicker();
+  const date = calendarMonth.date;
+  const monthName = date.toLocaleString('default', { month: 'long' });
+  const year = date.getFullYear();
+
+  return (
+    <div className={cn(PICKER_HEADER_CLASS, className)} {...props}>
+      <Button
+        type="button"
+        variant="ghost"
+        size="icon-sm"
+        className={cn(PICKER_NAV_BUTTON_CLASS, 'justify-self-start')}
+        disabled={!previousMonth}
+        aria-label="Previous month"
+        onClick={() => previousMonth && goToMonth(previousMonth)}
+      >
+        <ChevronLeftIcon className="size-4" />
+      </Button>
+
+      <div className="flex items-center justify-center gap-1 text-sm font-semibold">
+        <button
+          type="button"
+          className="rounded-sm px-1 text-center text-sm font-semibold text-foreground hover:text-accent-foreground focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-ring"
+          onClick={() => {
+            setPickerYear(year);
+            setView('months');
+          }}
+        >
+          {monthName}
+        </button>
+        <button
+          type="button"
+          className="rounded-sm px-1 text-center text-sm font-semibold text-foreground hover:text-accent-foreground focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-ring"
+          onClick={() => {
+            setDecadeStart(Math.floor(year / 10) * 10);
+            setPickerYear(year);
+            setView('years');
+          }}
+        >
+          {year}
+        </button>
+      </div>
+
+      <Button
+        type="button"
+        variant="ghost"
+        size="icon-sm"
+        className={cn(PICKER_NAV_BUTTON_CLASS, 'justify-self-end')}
+        disabled={!nextMonth}
+        aria-label="Next month"
+        onClick={() => nextMonth && goToMonth(nextMonth)}
+      >
+        <ChevronRightIcon className="size-4" />
+      </Button>
+    </div>
+  );
+}
+
+function CalendarGridPickerPanel({
+  month,
+  onMonthChange,
+  startMonth,
+  endMonth,
+}: {
+  month: Date;
+  onMonthChange: (month: Date) => void;
+  startMonth?: Date;
+  endMonth?: Date;
+}) {
+  const {
+    view,
+    setView,
+    pickerYear,
+    setPickerYear,
+    decadeStart,
+    setDecadeStart,
+  } = useCalendarGridPicker();
+
+  const minYear = startMonth?.getFullYear();
+  const maxYear = endMonth?.getFullYear();
+  const activeMonth = clampMonthToRange(
+    pickerYear,
+    month.getMonth(),
+    startMonth,
+    endMonth,
+  );
+
+  if (view === 'months') {
+    return (
+      <div className="w-full">
+        <PickerNav
+          label={String(pickerYear)}
+          onPrevious={() => setPickerYear((year) => year - 1)}
+          onNext={() => setPickerYear((year) => year + 1)}
+          onLabelClick={() => {
+            setDecadeStart(Math.floor(pickerYear / 10) * 10);
+            setView('years');
+          }}
+          disablePrevious={minYear !== undefined && pickerYear <= minYear}
+          disableNext={maxYear !== undefined && pickerYear >= maxYear}
+        />
+        <MonthGrid
+          year={pickerYear}
+          activeMonth={activeMonth}
+          startMonth={startMonth}
+          endMonth={endMonth}
+          onSelect={(nextMonth) => {
+            onMonthChange(new Date(pickerYear, nextMonth, 1));
+            setView('days');
+          }}
+        />
+      </div>
+    );
+  }
+
+  if (view === 'years') {
+    return (
+      <div className="w-full">
+        <PickerNav
+          label={`${decadeStart} - ${decadeStart + 9}`}
+          onPrevious={() => setDecadeStart((start) => start - 10)}
+          onNext={() => setDecadeStart((start) => start + 10)}
+          disablePrevious={minYear !== undefined && decadeStart <= minYear}
+          disableNext={maxYear !== undefined && decadeStart + 10 > maxYear}
+        />
+        <YearGrid
+          decadeStart={decadeStart}
+          activeYear={pickerYear}
+          startMonth={startMonth}
+          endMonth={endMonth}
+          onSelect={(year) => {
+            const nextMonth = clampMonthToRange(
+              year,
+              activeMonth,
+              startMonth,
+              endMonth,
+            );
+
+            setPickerYear(year);
+            onMonthChange(new Date(year, nextMonth, 1));
+            setView('months');
+          }}
+        />
+      </div>
+    );
+  }
+
+  return null;
+}
+
+export type CalendarGridPickerProps = Omit<
+  Extract<React.ComponentProps<typeof Calendar>, { mode: 'single' }>,
+  'captionLayout' | 'navLayout' | 'hideNavigation'
+> & {
+  onViewChange?: (view: CalendarView) => void;
+};
+
+function CalendarGridPicker({
+  className,
+  classNames,
+  components,
+  formatters,
+  month,
+  defaultMonth,
+  onMonthChange,
+  onViewChange,
+  startMonth,
+  endMonth,
+  ...props
+}: CalendarGridPickerProps) {
+  const initialMonth = month ?? defaultMonth ?? new Date();
+  const [view, setView] = React.useState<CalendarView>('days');
+  const [pickerYear, setPickerYear] = React.useState(
+    initialMonth.getFullYear(),
+  );
+  const [decadeStart, setDecadeStart] = React.useState(
+    Math.floor(initialMonth.getFullYear() / 10) * 10,
+  );
+  const [internalMonth, setInternalMonth] = React.useState(initialMonth);
+
+  const currentMonth = month ?? internalMonth;
+
+  React.useEffect(() => {
+    if (month) {
+      setPickerYear(month.getFullYear());
+      setDecadeStart(Math.floor(month.getFullYear() / 10) * 10);
+    }
+  }, [month]);
+
+  const handleViewChange = React.useCallback(
+    (nextView: CalendarView) => {
+      setView(nextView);
+      onViewChange?.(nextView);
+    },
+    [onViewChange],
+  );
+
+  const handleMonthChange = React.useCallback(
+    (nextMonth: Date) => {
+      if (!month) setInternalMonth(nextMonth);
+      setPickerYear(nextMonth.getFullYear());
+      setDecadeStart(Math.floor(nextMonth.getFullYear() / 10) * 10);
+      onMonthChange?.(nextMonth);
+    },
+    [month, onMonthChange],
+  );
+
+  const contextValue = React.useMemo(
+    () => ({
+      view,
+      setView: handleViewChange,
+      pickerYear,
+      setPickerYear,
+      decadeStart,
+      setDecadeStart,
+    }),
+    [view, handleViewChange, pickerYear, decadeStart],
+  );
+
+  if (view !== 'days') {
+    return (
+      <CalendarGridPickerContext.Provider value={contextValue}>
+        <div className={cn(PICKER_SHELL_CLASS, PICKER_WIDTH, className)}>
+          <CalendarGridPickerPanel
+            month={currentMonth}
+            onMonthChange={handleMonthChange}
+            startMonth={startMonth}
+            endMonth={endMonth}
+          />
+        </div>
+      </CalendarGridPickerContext.Provider>
+    );
+  }
+
+  return (
+    <CalendarGridPickerContext.Provider value={contextValue}>
+      <Calendar
+        hideNavigation
+        className={cn(PICKER_SHELL_CLASS, PICKER_WIDTH, className)}
+        month={currentMonth}
+        onMonthChange={handleMonthChange}
+        startMonth={startMonth}
+        endMonth={endMonth}
+        formatters={{
+          formatWeekdayName: (date) =>
+            date.toLocaleString('en-US', { weekday: 'short' }).slice(0, 2),
+          ...formatters,
+        }}
+        classNames={{
+          month: 'flex w-full flex-col gap-2',
+          month_caption: 'p-0',
+          weekdays: 'flex w-full',
+          weekday:
+            'flex-1 text-center text-[0.8rem] font-medium text-muted-foreground select-none',
+          week: 'mt-1 flex w-full',
+          ...classNames,
+        }}
+        components={{
+          MonthCaption: CalendarMonthCaption,
+          DayButton: (dayButtonProps) => (
+            <CalendarDayButton
+              {...dayButtonProps}
+              className={cn(
+                dayButtonProps.className,
+                'data-[selected-single=true]:rounded-full data-[selected-single=true]:bg-muted data-[selected-single=true]:text-foreground',
+              )}
+            />
+          ),
+          ...components,
+        }}
+        {...(props as Extract<
+          React.ComponentProps<typeof Calendar>,
+          { mode: 'single' }
+        >)}
+      />
+    </CalendarGridPickerContext.Provider>
+  );
+}
+
+export { CalendarGridPicker, type CalendarView };

src/components/ui/sidebar.tsx

@@ -256,29 +256,56 @@ function Sidebar({
 function SidebarTrigger({
   className,
   onClick,
+  tooltip,
   ...props
-}: React.ComponentProps<typeof Button>) {
-  const { toggleSidebar } = useSidebar();
+}: React.ComponentProps<typeof Button> & {
+  tooltip?: string | React.ComponentProps<typeof TooltipContent>;
+}) {
+  const { isMobile, toggleSidebar } = useSidebar();
 
-  return (
+  const button = (
     <Button
       data-sidebar="trigger"
       data-slot="sidebar-trigger"
       variant="ghost"
-      size="icon"
-      className={cn('size-7', className)}
+      size="icon-sm"
+      className={cn(
+        'rounded-md text-muted-foreground transition-colors hover:bg-accent hover:text-foreground',
+        className,
+      )}
       onClick={(event) => {
         onClick?.(event);
         toggleSidebar();
       }}
       {...props}
     >
-      <PanelLeftIcon />
+      <PanelLeftIcon className="size-4" />
       <span className="sr-only">Toggle Sidebar</span>
     </Button>
   );
-}
 
+  if (!tooltip) {
+    return button;
+  }
+
+  if (typeof tooltip === 'string') {
+    tooltip = {
+      children: tooltip,
+    };
+  }
+
+  return (
+    <Tooltip>
+      <TooltipTrigger asChild>{button}</TooltipTrigger>
+      <TooltipContent
+        side="right"
+        align="center"
+        hidden={isMobile}
+        {...tooltip}
+      />
+    </Tooltip>
+  );
+}
 function SidebarRail({ className, ...props }: React.ComponentProps<'button'>) {
   const { toggleSidebar } = useSidebar();
 

src/components/video/annotatedDetectionImage.tsx

@@ -4,7 +4,7 @@ import { AlertTriangle, ImageIcon, Loader2 } from 'lucide-react';
 import Image from 'next/image';
 
 import { useProtectedMediaObjectUrl } from '@/hooks/useProtectedMedia';
-import type { DetectionResultItem } from '@/types';
+import type { BoundingBoxOverlayItem, DetectionResultItem } from '@/types';
 
 import BoundingBoxOverlay from '@/components/annotation/boundingBoxOverlay';
 
@@ -22,6 +22,17 @@ export default function AnnotatedDetectionImage({
   const { objectUrl, isLoading, isError } = useProtectedMediaObjectUrl(
     detection?.detection.context_image_url,
   );
+  const overlayDetections: BoundingBoxOverlayItem[] = detection
+    ? [
+        {
+          id: detection.id,
+          class_name: detection.detection.class_name,
+          display_name: detection.detection.display_name,
+          confidence: detection.detection.confidence,
+          bounding_box: detection.detection.bounding_box,
+        },
+      ]
+    : [];
 
   const aspectRatio =
     videoWidth > 0 && videoHeight > 0
@@ -58,7 +69,7 @@ export default function AnnotatedDetectionImage({
             className="object-contain"
           />
           <BoundingBoxOverlay
-            detections={[detection]}
+            detections={overlayDetections}
             videoWidth={videoWidth}
             videoHeight={videoHeight}
           />

src/components/video/annotatedVideoPlayer.tsx

@@ -2,7 +2,10 @@
 
 import { RefObject, useEffect } from 'react';
 import { AlertTriangle, Loader2 } from 'lucide-react';
-import type { DetectionResultLog } from '@/types';
+import type {
+  DetectionResultLog,
+  VideoAnnotationFrameDetection,
+} from '@/types';
 import { useDetectionThumbnails } from './useDetectionThumbnails';
 import BoundingBoxOverlay from '@/components/annotation/boundingBoxOverlay';
 import {
@@ -21,7 +24,7 @@ import {
 interface AnnotatedVideoPlayerProps {
   videoRef: RefObject<MediaPlayerInstance | null>;
   logs: DetectionResultLog[];
-  visibleLogs: DetectionResultLog[];
+  visibleDetections: VideoAnnotationFrameDetection[];
   videoWidth: number;
   videoHeight: number;
   videoUrl: string | null;
@@ -60,7 +63,7 @@ function VideoFrameSync({
 export default function AnnotatedVideoPlayer({
   videoRef,
   logs,
-  visibleLogs,
+  visibleDetections,
   videoWidth,
   videoHeight,
   videoUrl,
@@ -92,7 +95,7 @@ export default function AnnotatedVideoPlayer({
           </MediaProvider>
           <VideoFrameSync onVideoFrame={onVideoFrame} />
           <BoundingBoxOverlay
-            detections={visibleLogs}
+            detections={visibleDetections}
             videoWidth={videoWidth}
             videoHeight={videoHeight}
           />

src/components/video/useVideoAnnotationPlayback.ts

@@ -0,0 +1,242 @@
+'use client';
+
+import { useQueryClient } from '@tanstack/react-query';
+import {
+  RefObject,
+  useCallback,
+  useEffect,
+  useMemo,
+  useRef,
+  useState,
+} from 'react';
+import type { MediaPlayerInstance } from '@vidstack/react';
+
+import { useVideoAnnotationFramesQuery } from '@/app/(modules)/results/hooks/useVideoResults';
+import { videoKeys } from '@/app/(modules)/results/queries/videoKeys';
+import { videoService } from '@/services/api';
+import type {
+  DetectionResultLog,
+  VideoAnnotationFrameDetection,
+  VideoAnnotationFramesParams,
+  VideoAnnotationFramesResponse,
+} from '@/types';
+
+const ANNOTATION_WINDOW_MS = 30000;
+const ANNOTATION_PREFETCH_THRESHOLD_MS = 5000;
+
+const buildWindowParams = (
+  startTimeMs: number,
+): VideoAnnotationFramesParams => ({
+  start_time_ms: startTimeMs,
+  end_time_ms: startTimeMs + ANNOTATION_WINDOW_MS,
+});
+
+const getWindowStartMs = (currentTimeMs: number) =>
+  Math.floor(Math.max(currentTimeMs, 0) / ANNOTATION_WINDOW_MS) *
+  ANNOTATION_WINDOW_MS;
+
+interface UseVideoAnnotationPlaybackParams {
+  videoId: string | undefined;
+  logs: DetectionResultLog[];
+  fps: number;
+  videoRef: RefObject<MediaPlayerInstance | null>;
+}
+
+export function useVideoAnnotationPlayback({
+  videoId,
+  logs,
+  fps,
+  videoRef,
+}: UseVideoAnnotationPlaybackParams) {
+  const queryClient = useQueryClient();
+  const shouldPauseAfterSeekRef = useRef(false);
+  const visibleDetectionIdsRef = useRef('');
+  const [currentWindowStartMs, setCurrentWindowStartMs] = useState(0);
+  const [activeLog, setActiveLog] = useState<DetectionResultLog | undefined>();
+  const [visibleDetections, setVisibleDetections] = useState<
+    VideoAnnotationFrameDetection[]
+  >([]);
+
+  const sortedLogs = useMemo(
+    () =>
+      [...logs].sort(
+        (a, b) => a.frame.timestamp_seconds - b.frame.timestamp_seconds,
+      ),
+    [logs],
+  );
+  const currentWindowParams = useMemo(
+    () => buildWindowParams(currentWindowStartMs),
+    [currentWindowStartMs],
+  );
+  const annotationFramesQuery = useVideoAnnotationFramesQuery(
+    videoId,
+    currentWindowParams,
+  );
+
+  useEffect(() => {
+    setActiveLog((current) => {
+      if (current && sortedLogs.some((log) => log.id === current.id)) {
+        return current;
+      }
+
+      return sortedLogs[0];
+    });
+  }, [sortedLogs]);
+
+  const prefetchWindow = useCallback(
+    (startTimeMs: number) => {
+      if (!videoId || startTimeMs < 0) return;
+
+      const params = buildWindowParams(startTimeMs);
+
+      void queryClient.prefetchQuery({
+        queryKey: videoKeys.annotationFrames(videoId, params),
+        queryFn: () => videoService.getVideoAnnotationFrames(videoId, params),
+        staleTime: 1000 * 60 * 5,
+        gcTime: 1000 * 60 * 30,
+      });
+    },
+    [queryClient, videoId],
+  );
+
+  const getWindowData = useCallback(
+    (startTimeMs: number) => {
+      if (!videoId) return undefined;
+
+      const params = buildWindowParams(startTimeMs);
+
+      return (
+        queryClient.getQueryData<VideoAnnotationFramesResponse>(
+          videoKeys.annotationFrames(videoId, params),
+        ) ??
+        (startTimeMs === currentWindowStartMs
+          ? annotationFramesQuery.data
+          : undefined)
+      );
+    },
+    [annotationFramesQuery.data, currentWindowStartMs, queryClient, videoId],
+  );
+
+  const updateActiveLog = useCallback(
+    (currentTimeSeconds: number) => {
+      if (sortedLogs.length === 0) {
+        setActiveLog(undefined);
+        return;
+      }
+
+      const currentLog = sortedLogs.findLast(
+        (log) => log.frame.timestamp_seconds <= currentTimeSeconds,
+      );
+      const nextActiveLog = currentLog ?? sortedLogs[0];
+
+      setActiveLog((previous) =>
+        previous?.id === nextActiveLog.id ? previous : nextActiveLog,
+      );
+    },
+    [sortedLogs],
+  );
+
+  const getVisibleDetections = useCallback(
+    (currentTimeSeconds: number) => {
+      const currentTimeMs = currentTimeSeconds * 1000;
+      const targetWindowStartMs = getWindowStartMs(currentTimeMs);
+
+      if (targetWindowStartMs !== currentWindowStartMs) {
+        setCurrentWindowStartMs(targetWindowStartMs);
+      }
+
+      const windowData = getWindowData(targetWindowStartMs);
+
+      if (!windowData) {
+        return [];
+      }
+
+      if (
+        windowData.window.has_more_after &&
+        currentTimeMs >=
+          windowData.window.end_time_ms - ANNOTATION_PREFETCH_THRESHOLD_MS
+      ) {
+        prefetchWindow(windowData.window.end_time_ms);
+      }
+
+      const frameDurationMs = fps > 0 ? 1000 / fps : 0;
+      const currentFrame = windowData.frames.find((frame) => {
+        const frameEndMs =
+          frame.end_timestamp_ms ?? frame.timestamp_ms + frameDurationMs;
+
+        return (
+          currentTimeMs >= frame.timestamp_ms && currentTimeMs < frameEndMs
+        );
+      });
+
+      return currentFrame?.detections ?? [];
+    },
+    [currentWindowStartMs, fps, getWindowData, prefetchWindow],
+  );
+
+  const updateVisibleDetections = useCallback(
+    (currentTimeSeconds: number) => {
+      const nextDetections = getVisibleDetections(currentTimeSeconds);
+      const nextIds = nextDetections.map((detection) => detection.id).join('|');
+
+      if (nextIds === visibleDetectionIdsRef.current) return;
+
+      visibleDetectionIdsRef.current = nextIds;
+      setVisibleDetections(nextDetections);
+    },
+    [getVisibleDetections],
+  );
+
+  const handleSeek = useCallback(
+    (log: DetectionResultLog) => {
+      const video = videoRef.current;
+      if (!video) return;
+
+      const targetTimeSeconds = log.frame.timestamp_seconds;
+      const targetWindowStartMs = getWindowStartMs(targetTimeSeconds * 1000);
+
+      prefetchWindow(targetWindowStartMs);
+      setCurrentWindowStartMs(targetWindowStartMs);
+      shouldPauseAfterSeekRef.current = true;
+      video.pause();
+      video.currentTime = targetTimeSeconds;
+      setActiveLog(log);
+      updateVisibleDetections(targetTimeSeconds);
+    },
+    [prefetchWindow, updateVisibleDetections, videoRef],
+  );
+
+  const handleSeeked = useCallback(() => {
+    const video = videoRef.current;
+    if (!video || !shouldPauseAfterSeekRef.current) return;
+
+    shouldPauseAfterSeekRef.current = false;
+    video.pause();
+  }, [videoRef]);
+
+  const handleTimeUpdate = useCallback(() => {
+    const video = videoRef.current;
+    if (!video) return;
+
+    updateActiveLog(video.currentTime);
+  }, [updateActiveLog, videoRef]);
+
+  const handleVideoFrame = useCallback(
+    (mediaTime: number) => {
+      updateActiveLog(mediaTime);
+      updateVisibleDetections(mediaTime);
+    },
+    [updateActiveLog, updateVisibleDetections],
+  );
+
+  return {
+    activeLog,
+    annotationFramesQuery,
+    handleSeek,
+    handleSeeked,
+    handleTimeUpdate,
+    handleVideoFrame,
+    sortedLogs,
+    visibleDetections,
+  };
+}

src/components/videoPlayerSection.tsx

@@ -1,36 +1,60 @@
 'use client';
 
-import { useMemo, useState } from 'react';
-import { ImageIcon } from 'lucide-react';
+import { useRef } from 'react';
+import type { MediaPlayerInstance } from '@vidstack/react';
+import { Film } from 'lucide-react';
+
+import { useProtectedVideoQuery } from '@/app/(modules)/results/hooks/useVideoResults';
+import type { CompletedVideoResult } from '@/types';
+
+import DetectionLocationMap from './map/detectionLocationMap';
 import {
   Card,
   CardContent,
   CardDescription,
   CardHeader,
   CardTitle,
-} from '@/components/ui/card';
-import { CompletedVideoResult } from '@/types';
-import DetectionLocationMap from './map/detectionLocationMap';
+} from './ui/card';
 import AnnotatedDetectionImage from './video/annotatedDetectionImage';
+import AnnotatedVideoPlayer from './video/annotatedVideoPlayer';
 import CurrentDetectionBar from './video/currentDetectionBar';
 import DetectionLogs from './video/detectionLogs';
 import ResultStatsGrid from './video/resultStatsGrid';
+import { useVideoAnnotationPlayback } from './video/useVideoAnnotationPlayback';
 
 type VideoPlayerSectionProps = {
   data: CompletedVideoResult;
 };
 
 export default function VideoPlayerSection({ data }: VideoPlayerSectionProps) {
-  const sortedLogs = useMemo(
-    () =>
-      [...data.logs].sort(
-        (a, b) => a.frame.timestamp_seconds - b.frame.timestamp_seconds,
-      ),
-    [data.logs],
-  );
-  const [selectedLogId, setSelectedLogId] = useState(sortedLogs[0]?.id);
-  const activeLog =
-    sortedLogs.find((log) => log.id === selectedLogId) ?? sortedLogs[0];
+  const videoRef = useRef<MediaPlayerInstance | null>(null);
+  const {
+    activeLog,
+    handleSeek,
+    handleSeeked,
+    handleTimeUpdate,
+    handleVideoFrame,
+    sortedLogs,
+    visibleDetections,
+  } = useVideoAnnotationPlayback({
+    videoId: data.video_id,
+    logs: data.logs,
+    fps: data.summary.fps,
+    videoRef,
+  });
+  const {
+    videoUrl,
+    isLoading: isVideoLoading,
+    isError: isVideoError,
+    refetch: refetchVideo,
+  } = useProtectedVideoQuery(data.raw_video_url);
+  const mediaAspectRatio =
+    data.summary.video_width > 0 && data.summary.video_height > 0
+      ? `${data.summary.video_width} / ${data.summary.video_height}`
+      : '16 / 9';
+  const activeMapLabel = activeLog
+    ? `${activeLog.detection.display_name} - Frame ${activeLog.frame.number}`
+    : 'Detection';
 
   return (
     <div className="space-y-6">
@@ -38,14 +62,15 @@ export default function VideoPlayerSection({ data }: VideoPlayerSectionProps) {
         <CardHeader className="border-b pb-4">
           <div className="flex items-center gap-3">
             <div className="rounded bg-secondary p-2">
-              <ImageIcon className="h-5 w-5 text-primary" />
+              <Film className="h-5 w-5 text-primary" />
             </div>
             <div>
               <CardTitle className="text-lg font-bold">
-                Detection Preview
+                Detection Playback
               </CardTitle>
               <CardDescription className="text-xs">
-                Selected detection image with its bounding box
+                Raw video with frontend annotation overlay and selected
+                detection location
               </CardDescription>
             </div>
           </div>
@@ -53,17 +78,48 @@ export default function VideoPlayerSection({ data }: VideoPlayerSectionProps) {
         <CardContent className="pt-6">
           <div className="grid grid-cols-1 gap-6 lg:grid-cols-3">
             <div className="space-y-6 lg:col-span-2">
-              <AnnotatedDetectionImage
-                detection={activeLog}
-                videoWidth={data.summary.video_width}
-                videoHeight={data.summary.video_height}
-              />
+              <div className="space-y-2">
+                <p className="text-xs font-medium text-muted-foreground">
+                  Detection Video
+                </p>
+                <AnnotatedVideoPlayer
+                  videoRef={videoRef}
+                  logs={sortedLogs}
+                  visibleDetections={visibleDetections}
+                  videoWidth={data.summary.video_width}
+                  videoHeight={data.summary.video_height}
+                  videoUrl={videoUrl}
+                  isLoading={isVideoLoading}
+                  isError={isVideoError}
+                  onRetry={() => void refetchVideo()}
+                  onTimeUpdate={handleTimeUpdate}
+                  onVideoFrame={handleVideoFrame}
+                  onSeeked={handleSeeked}
+                />
+              </div>
 
-              <DetectionLocationMap
-                latitude={activeLog?.location.latitude ?? null}
-                longitude={activeLog?.location.longitude ?? null}
-                label={activeLog?.detection.display_name ?? 'Detection'}
-              />
+              <div className="grid gap-4 xl:grid-cols-[minmax(0,1.65fr)_minmax(280px,1fr)]">
+                <div className="space-y-2">
+                  <p className="text-xs font-medium text-muted-foreground">
+                    Annotated Image
+                  </p>
+                  <AnnotatedDetectionImage
+                    detection={activeLog}
+                    videoWidth={data.summary.video_width}
+                    videoHeight={data.summary.video_height}
+                  />
+                </div>
+
+                <DetectionLocationMap
+                  latitude={activeLog?.location.latitude ?? null}
+                  longitude={activeLog?.location.longitude ?? null}
+                  label={activeMapLabel}
+                  title="Location on Map"
+                  variant="plain"
+                  aspectRatio={mediaAspectRatio}
+                  showCoordinates={false}
+                />
+              </div>
 
               <CurrentDetectionBar activeLog={activeLog} data={data} />
             </div>
@@ -71,7 +127,7 @@ export default function VideoPlayerSection({ data }: VideoPlayerSectionProps) {
             <DetectionLogs
               logs={sortedLogs}
               activeLogId={activeLog?.id}
-              onSelect={(log) => setSelectedLogId(log.id)}
+              onSelect={handleSeek}
             />
           </div>
 

src/constants/apiRoutes.ts

@@ -54,6 +54,8 @@ export const API_ROUTES = {
     UPLOAD_EVENTS: (token: string) =>
       `/biz/api/v1/uploads/events?sse_token=${encodeURIComponent(token)}`,
     RESULTS: (id: string) => `/biz/api/v1/results/${id}/completed`,
+    ANNOTATION_FRAMES: (id: string) =>
+      `/biz/api/v1/results/${id}/annotation-frames`,
     DETECTIONS: (id: string) => `/biz/api/v1/results/${id}/detections`,
   },
   TICKETS: {

src/services/api/video.service.ts

@@ -5,6 +5,8 @@ import {
   PaginationParams,
   SseTokenResponse,
   UploadListResponse,
+  VideoAnnotationFramesParams,
+  VideoAnnotationFramesResponse,
   VideoDetectionsParams,
   VideoDetectionsResponse,
 } from '@/types';
@@ -81,15 +83,28 @@ export const videoService = {
     return response.data;
   },
 
+  getVideoAnnotationFrames: async (
+    videoId: string,
+    params: VideoAnnotationFramesParams,
+  ): Promise<VideoAnnotationFramesResponse> => {
+    const response = await axiosClient.get<VideoAnnotationFramesResponse>(
+      API_ROUTES.VIDEOS.ANNOTATION_FRAMES(videoId),
+      {
+        params,
+      },
+    );
+    return response.data;
+  },
+
   /**
-   * Fetch the annotated video as a blob through the authenticated axios client.
+   * Fetch a protected video as a blob through the authenticated axios client.
    *
    * The browser's native `<video src>` request cannot carry the Bearer token,
    * which makes the protected media endpoint respond with 401. Proxying the
    * download through axios attaches the auth header (and benefits from the
    * refresh-on-401 interceptor) so the bytes can be played back locally.
    */
-  getAnnotatedVideo: async (url: string): Promise<Blob> => {
+  getProtectedVideo: async (url: string): Promise<Blob> => {
     const response = await axiosClient.get<Blob>(url, {
       responseType: 'blob',
     });

src/types/detection.ts

@@ -14,6 +14,14 @@ export type DetectionBoundingBox = {
   height: number;
 };
 
+export type BoundingBoxOverlayItem = {
+  id: string | number;
+  class_name: string;
+  display_name: string;
+  confidence: number;
+  bounding_box: DetectionBoundingBox;
+};
+
 export type DetectionResultItem = {
   id: string;
   detection: {
@@ -66,3 +74,45 @@ export type VideoDetectionsResponse = {
   sort: string;
   items: DetectionResultItem[];
 };
+
+export type VideoAnnotationFramesParams = {
+  start_time_ms: number;
+  end_time_ms: number;
+};
+
+export type VideoAnnotationFrameDetection = BoundingBoxOverlayItem & {
+  location: {
+    latitude: number | null;
+    longitude: number | null;
+  };
+};
+
+export type VideoAnnotationFrame = {
+  frame_number: number;
+  timestamp_ms: number;
+  timestamp_seconds: number;
+  end_timestamp_ms?: number;
+  detections: VideoAnnotationFrameDetection[];
+};
+
+export type VideoAnnotationFramesResponse = {
+  video_id: string;
+  raw_video_url: string;
+  video: {
+    width: number;
+    height: number;
+    fps: number;
+    duration_seconds: number;
+    total_frames: number;
+  };
+  coordinate_format: 'xyxy_pixel' | string;
+  window: {
+    start_time_ms: number;
+    end_time_ms: number;
+    has_more_before: boolean;
+    has_more_after: boolean;
+  };
+  frame_count_in_window: number;
+  detection_count_in_window: number;
+  frames: VideoAnnotationFrame[];
+};