feat: add VideoViewer component for enhanced video playback experience; implement download functionality and viewer modal

src/app/components/RenderMessageContent.tsx

@@ -28,6 +28,7 @@ import {
 import { UrlPreviewCard, UrlPreviewHolder, YouTubeEmbed, isYouTubeUrl, TikTokEmbed, isTikTokUrl, GiphyEmbed, isGiphyUrl } from './url-preview';
 import { Image, MediaControl, Video } from './media';
 import { ImageViewer } from './image-viewer';
+import { VideoViewer } from './video-viewer';
 import { PdfViewer } from './Pdf-viewer';
 import { TextViewer } from './text-viewer';
 import { testMatrixTo } from '../plugins/matrix-to';
@@ -240,7 +241,6 @@ export function RenderMessageContent({
           content={getContent()}
           renderAsFile={renderFile}
           renderVideoContent={({ body, info, mimeType, url, encInfo, ...props }) => {
-            // Check if there's valid thumbnail metadata
             const hasValidThumbnail = 
               (typeof info.thumbnail_file?.url === 'string' || typeof info.thumbnail_url === 'string') &&
               typeof info.thumbnail_info?.mimetype === 'string';
@@ -257,7 +257,6 @@ export function RenderMessageContent({
                 renderThumbnail={
                   mediaAutoLoad
                     ? () => hasValidThumbnail ? (
-                        // Try to load the provided thumbnail first
                         <ThumbnailContent
                           info={info}
                           renderImage={(src) => (
@@ -265,7 +264,6 @@ export function RenderMessageContent({
                           )}
                         />
                       ) : (
-                        // Fallback: Extract first frame from the video itself
                         <VideoFrameThumbnail
                           mimeType={mimeType}
                           url={url}
@@ -277,6 +275,7 @@ export function RenderMessageContent({
                       )
                     : undefined
                 }
+                renderViewer={(p) => <VideoViewer {...p} />}
                 renderVideo={(p) => <Video {...p} />}
               />
             );

src/app/components/media/Video.tsx

@@ -1,43 +1,20 @@
 import React, { VideoHTMLAttributes, forwardRef, useRef, useState, useEffect } from 'react';
+
 import classNames from 'classnames';
 import { Box, IconButton, Icon, Icons, Tooltip, TooltipProvider, Text } from 'folds';
 import * as css from './media.css';
 import * as videoCss from './videoControls.css';
 
-/**
- * Fullscreen icon SVG
- */
-function FullscreenIcon() {
-  return (
-    <svg width="1em" height="1em" viewBox="0 0 24 24" fill="currentColor">
-      <path d="M7 14H5v5h5v-2H7v-3zm-2-4h2V7h3V5H5v5zm12 7h-3v2h5v-5h-2v3zM14 5v2h3v3h2V5h-5z" />
-    </svg>
-  );
-}
-
-/**
- * Exit fullscreen icon SVG
- */
-function ExitFullscreenIcon() {
-  return (
-    <svg width="1em" height="1em" viewBox="0 0 24 24" fill="currentColor">
-      <path d="M5 16h3v3h2v-5H5v2zm3-8H5v2h5V5H8v3zm6 11h2v-3h3v-2h-5v5zm2-11V5h-2v5h5V8h-3z" />
-    </svg>
-  );
-}
-
 type VideoProps = VideoHTMLAttributes<HTMLVideoElement> & {
   disableControls?: boolean;
+  onExpand?: () => void;
 };
 
 export const Video = forwardRef<HTMLVideoElement, VideoProps>(
-  ({ className, disableControls, ...props }, ref) => {
+  ({ className, disableControls, onExpand, ...props }, ref) => {
-    const containerRef = useRef<HTMLDivElement>(null);
     const videoRef = useRef<HTMLVideoElement>(null);
     const [showControls, setShowControls] = useState(false);
-    const [isFullscreen, setIsFullscreen] = useState(false);
 
-    // Combine refs
     useEffect(() => {
       if (typeof ref === 'function') {
         ref(videoRef.current);
@@ -46,74 +23,22 @@ export const Video = forwardRef<HTMLVideoElement, VideoProps>(
       }
     }, [ref]);
 
-    // Track fullscreen state
     useEffect(() => {
-      const handleFullscreenChange = () => {
+      if (!onExpand) return;
-        setIsFullscreen(!!document.fullscreenElement);
+      const video = videoRef.current;
+      if (!video) return;
+
+      const handleFullscreenRequest = (evt: Event) => {
+        evt.preventDefault();
+        evt.stopImmediatePropagation();
+        onExpand();
       };
 
-      document.addEventListener('fullscreenchange', handleFullscreenChange);
+      video.addEventListener('webkitbeginfullscreen', handleFullscreenRequest);
-      return () => document.removeEventListener('fullscreenchange', handleFullscreenChange);
+      return () => {
-    }, []);
+        video.removeEventListener('webkitbeginfullscreen', handleFullscreenRequest);
-
+      };
-    const handleFullscreen = async () => {
+    }, [onExpand]);
-      try {
-        if (!document.fullscreenElement && containerRef.current) {
-          await containerRef.current.requestFullscreen();
-        } else if (document.fullscreenElement) {
-          await document.exitFullscreen();
-        }
-      } catch (error) {
-        console.error('Error toggling fullscreen:', error);
-      }
-    };
-
-    const handlePopOut = () => {
-      const videoSrc = videoRef.current?.src;
-      const videoTitle = props.title || 'Video';
-      
-      if (videoSrc) {
-        const popoutWindow = window.open(
-          '',
-          '_blank',
-          'width=800,height=600,menubar=no,toolbar=no,location=no,status=no'
-        );
-        
-        if (popoutWindow) {
-          popoutWindow.document.write(`
-            <!DOCTYPE html>
-            <html>
-              <head>
-                <title>${videoTitle}</title>
-                <style>
-                  body {
-                    margin: 0;
-                    padding: 0;
-                    background: #000;
-                    display: flex;
-                    align-items: center;
-                    justify-content: center;
-                    height: 100vh;
-                  }
-                  video {
-                    max-width: 100%;
-                    max-height: 100%;
-                    width: 100%;
-                    height: 100%;
-                  }
-                </style>
-              </head>
-              <body>
-                <video controls autoplay src="${videoSrc}">
-                  Your browser does not support the video tag.
-                </video>
-              </body>
-            </html>
-          `);
-          popoutWindow.document.close();
-        }
-      }
-    };
 
     if (disableControls) {
       return (
@@ -131,7 +56,6 @@ export const Video = forwardRef<HTMLVideoElement, VideoProps>(
 
     return (
       <Box
-        ref={containerRef}
         className={videoCss.VideoContainer}
         onMouseEnter={() => setShowControls(true)}
         onMouseLeave={() => setShowControls(false)}
@@ -143,15 +67,17 @@ export const Video = forwardRef<HTMLVideoElement, VideoProps>(
           ref={videoRef} 
           loop={props.autoPlay} 
           muted={props.autoPlay} 
-          playsInline 
+          playsInline
+          controlsList={onExpand ? 'nofullscreen' : undefined}
+          onDoubleClick={onExpand ? (e) => { e.stopPropagation(); onExpand(); } : undefined}
         />
         
-        {showControls && (
+        {onExpand && (
-          <Box className={videoCss.VideoControlsOverlay} gap="200">
+          <Box className={classNames(videoCss.VideoControlsOverlay, !showControls && videoCss.VideoControlsOverlayHidden)} gap="200">
             <TooltipProvider
               tooltip={
                 <Tooltip variant="Secondary">
-                  <Text size="T200">{isFullscreen ? 'Exit Fullscreen' : 'Fullscreen'}</Text>
+                  <Text size="T200">Expand</Text>
                 </Tooltip>
               }
               position="Bottom"
@@ -163,36 +89,10 @@ export const Video = forwardRef<HTMLVideoElement, VideoProps>(
                   variant="Secondary"
                   size="300"
                   radii="300"
-                  onClick={handleFullscreen}
+                  onClick={onExpand}
-                  aria-label={isFullscreen ? 'Exit fullscreen' : 'Enter fullscreen'}
+                  aria-label="Expand video"
                 >
-                  <Icon
+                  <Icon size="50" src={Icons.Plus} />
-                    size="200"
-                    src={isFullscreen ? ExitFullscreenIcon : FullscreenIcon}
-                  />
-                </IconButton>
-              )}
-            </TooltipProvider>
-
-            <TooltipProvider
-              tooltip={
-                <Tooltip variant="Secondary">
-                  <Text size="T200">Pop Out</Text>
-                </Tooltip>
-              }
-              position="Bottom"
-              align="Center"
-            >
-              {(triggerRef) => (
-                <IconButton
-                  ref={triggerRef}
-                  variant="Secondary"
-                  size="300"
-                  radii="300"
-                  onClick={handlePopOut}
-                  aria-label="Open in new window"
-                >
-                  <Icon size="200" src={Icons.External} />
                 </IconButton>
               )}
             </TooltipProvider>

src/app/components/media/videoControls.css.ts

@@ -24,5 +24,12 @@ export const VideoControlsOverlay = style([
     gap: config.space.S200,
     zIndex: 10,
     pointerEvents: 'auto',
+    opacity: 1,
+    transition: 'opacity 0.15s ease',
   },
 ]);
+
+export const VideoControlsOverlayHidden = style({
+  opacity: 0,
+  pointerEvents: 'none',
+});

src/app/components/message/content/VideoContent.tsx

@@ -6,6 +6,10 @@ import {
   Chip,
   Icon,
   Icons,
+  Modal,
+  Overlay,
+  OverlayBackdrop,
+  OverlayCenter,
   Spinner,
   Text,
   Tooltip,
@@ -14,6 +18,7 @@ import {
 } from 'folds';
 import classNames from 'classnames';
 import { BlurhashCanvas } from 'react-blurhash';
+import FocusTrap from 'focus-trap-react';
 import { EncryptedAttachmentInfo } from 'browser-encrypt-attachment';
 import {
   IThumbnailContent,
@@ -33,7 +38,14 @@ import {
 import { getCurrentAccessToken } from '../../../utils/auth';
 import { useMediaAuthentication } from '../../../hooks/useMediaAuthentication';
 import { validBlurHash } from '../../../utils/blurHash';
+import { ModalWide } from '../../../styles/Modal.css';
+import { stopPropagation } from '../../../utils/keyboard';
 
+type RenderViewerProps = {
+  src: string;
+  alt: string;
+  requestClose: () => void;
+};
 type RenderVideoProps = {
   title: string;
   src: string;
@@ -41,6 +53,7 @@ type RenderVideoProps = {
   onError: () => void;
   autoPlay: boolean;
   controls: boolean;
+  onExpand?: () => void;
 };
 type VideoContentProps = {
   body: string;
@@ -52,6 +65,7 @@ type VideoContentProps = {
   markedAsSpoiler?: boolean;
   spoilerReason?: string;
   renderThumbnail?: () => ReactNode;
+  renderViewer?: (props: RenderViewerProps) => ReactNode;
   renderVideo: (props: RenderVideoProps) => ReactNode;
 };
 export const VideoContent = as<'div', VideoContentProps>(
@@ -67,6 +81,7 @@ export const VideoContent = as<'div', VideoContentProps>(
       markedAsSpoiler,
       spoilerReason,
       renderThumbnail,
+      renderViewer,
       renderVideo,
       ...props
     },
@@ -78,6 +93,7 @@ export const VideoContent = as<'div', VideoContentProps>(
 
     const [load, setLoad] = useState(false);
     const [error, setError] = useState(false);
+    const [viewer, setViewer] = useState(false);
     const [blurred, setBlurred] = useState(markedAsSpoiler ?? false);
 
     const [srcState, loadSrc] = useAsyncCallback(
@@ -113,6 +129,28 @@ export const VideoContent = as<'div', VideoContentProps>(
 
     return (
       <Box className={classNames(css.RelativeBase, className)} {...props} ref={ref}>
+        {renderViewer && srcState.status === AsyncStatus.Success && (
+          <Overlay open={viewer} backdrop={<OverlayBackdrop />}>
+            <OverlayCenter>
+              <FocusTrap
+                focusTrapOptions={{
+                  initialFocus: false,
+                  onDeactivate: () => setViewer(false),
+                  clickOutsideDeactivates: true,
+                  escapeDeactivates: stopPropagation,
+                }}
+              >
+                <Modal className={ModalWide} size="500">
+                  {renderViewer({
+                    src: srcState.data,
+                    alt: body,
+                    requestClose: () => setViewer(false),
+                  })}
+                </Modal>
+              </FocusTrap>
+            </OverlayCenter>
+          </Overlay>
+        )}
         {typeof blurHash === 'string' && !load && (
           <BlurhashCanvas
             style={{ width: '100%', height: '100%' }}
@@ -154,6 +192,7 @@ export const VideoContent = as<'div', VideoContentProps>(
               onError: handleError,
               autoPlay: true,
               controls: true,
+              onExpand: renderViewer ? () => setViewer(true) : undefined,
             })}
           </Box>
         )}

src/app/components/video-viewer/VideoViewer.css.ts

@@ -0,0 +1,40 @@
+import { style } from '@vanilla-extract/css';
+import { DefaultReset, color, config } from 'folds';
+
+export const VideoViewer = style([
+  DefaultReset,
+  {
+    height: '100%',
+  },
+]);
+
+export const VideoViewerHeader = style([
+  DefaultReset,
+  {
+    paddingLeft: config.space.S200,
+    paddingRight: config.space.S200,
+    borderBottomWidth: config.borderWidth.B300,
+    flexShrink: 0,
+    gap: config.space.S200,
+  },
+]);
+
+export const VideoViewerContent = style([
+  DefaultReset,
+  {
+    backgroundColor: color.Background.Container,
+    color: color.Background.OnContainer,
+    overflow: 'hidden',
+  },
+]);
+
+export const VideoViewerVideo = style([
+  DefaultReset,
+  {
+    width: '100%',
+    height: '100%',
+    maxWidth: '100%',
+    maxHeight: '100%',
+    backgroundColor: color.Surface.Container,
+  },
+]);

src/app/components/video-viewer/VideoViewer.tsx

@@ -0,0 +1,78 @@
+import React from 'react';
+import FileSaver from 'file-saver';
+import classNames from 'classnames';
+import { Box, Chip, Header, Icon, IconButton, Icons, Text, as } from 'folds';
+import * as css from './VideoViewer.css';
+import { downloadMedia } from '../../utils/matrix';
+import { getCurrentAccessToken } from '../../utils/auth';
+
+export type VideoViewerProps = {
+  alt: string;
+  src: string;
+  requestClose: () => void;
+};
+
+export const VideoViewer = as<'div', VideoViewerProps>(
+  ({ className, alt, src, requestClose, ...props }, ref) => {    const handleDownload = async () => {
+      try {
+        const fileContent = await downloadMedia(src, getCurrentAccessToken());
+        FileSaver.saveAs(fileContent, alt);
+      } catch (error) {
+        console.warn('[VideoViewer] Failed to download media:', error);
+        try {
+          const response = await fetch(src);
+          if (response.ok) {
+            const blob = await response.blob();
+            FileSaver.saveAs(blob, alt);
+          }
+        } catch {
+          window.open(src, '_blank');
+        }
+      }
+    };
+
+    return (
+      <Box
+        className={classNames(css.VideoViewer, className)}
+        direction="Column"
+        {...props}
+        ref={ref}
+      >
+        <Header className={css.VideoViewerHeader} size="400">
+          <Box grow="Yes" alignItems="Center" gap="200">
+            <IconButton size="300" radii="300" onClick={requestClose}>
+              <Icon size="50" src={Icons.ArrowLeft} />
+            </IconButton>
+            <Text size="T300" truncate>
+              {alt}
+            </Text>
+          </Box>
+          <Box shrink="No" alignItems="Center" gap="200">
+            <Chip
+              variant="Primary"
+              onClick={handleDownload}
+              radii="300"
+              before={<Icon size="50" src={Icons.Download} />}
+            >
+              <Text size="B300">Download</Text>
+            </Chip>
+          </Box>
+        </Header>
+        <Box
+          grow="Yes"
+          className={css.VideoViewerContent}
+          justifyContent="Center"
+          alignItems="Center"
+        >
+          <video
+            className={css.VideoViewerVideo}
+            src={src}
+            title={alt}
+            controls
+            autoPlay
+          />
+        </Box>
+      </Box>
+    );
+  }
+);

src/app/components/video-viewer/index.ts

@@ -0,0 +1 @@
+export * from './VideoViewer';