add video to opengraph

src/layouts/BaseLayout.astro

@@ -26,12 +26,14 @@ const { title, description, keywords, openGraph, viewTransition } = Astro.props;
     <title>{title}</title>
     {openGraph && (
       <>
-        <meta name="og:title" content={title} />
-        <meta property="og:url" content={Astro.url.pathname} />
+        <meta property="og:title" content={title} />
+        {description && <meta property="og:description" content={description} />}
+        <meta property="og:url" content={Astro.url.href} />
         <meta property="og:type" content="website" />
-        <meta property="og:image" content={logo512.src} />
+        <meta property="og:image" content={new URL(logo512.src, Astro.url).href} />
       </>
     )}
+    <slot name="head" />
     <meta name="description" content={description} />
     {keywords && <meta name="keywords" content={keywords.join(', ')} />}
     <base href=`${BASE_PATH}/` />

src/layouts/website/WebsiteLayout.astro

@@ -14,6 +14,7 @@ const { title, description, footer = true } = Astro.props;
 ---
 
 <BaseLayout title={title} description={description} openGraph={true} viewTransition>
+  {Astro.slots.has('head') && <slot name="head" slot="head" />}
   <main class="min-h-[calc(100vh-3.5rem)] h-full w-full relative overflow-y-hidden">
     <slot />
   </main>

src/pages/video/[name].astro

@@ -11,19 +11,30 @@ if (!video) return new Response(null, { status: 404 });
 const metadata = await getVideoMetadata(video);
 if (!metadata) return new Response(null, { status: 404 });
 
-const { title, description } = metadata;
+const { title, description, width, height, duration } = metadata;
 const basePath = import.meta.env.BASE_URL.replace(/\/$/, '');
-const streamUrl = `${basePath}/video/${encodeURIComponent(video.name)}/stream`;
+const streamPath = `${basePath}/video/${encodeURIComponent(video.name)}/stream`;
+const streamUrl = new URL(streamPath, Astro.url);
 ---
 
-<WebsiteLayout title={`${title} – Video`}>
+<WebsiteLayout title={`${title} – Video`} description={description ?? undefined}>
+  <Fragment slot="head">
+    <meta property="og:type" content="video" />
+    <meta property="og:video" content={streamUrl.href} />
+    {streamUrl.href.startsWith('https://') && <meta property="og:video:secure_url" content={streamUrl.href} />}
+    <meta property="og:video:type" content={video.contentType} />
+    {width && <meta property="og:video:width" content={width.toString()} />}
+    {height && <meta property="og:video:height" content={height.toString()} />}
+    {duration && <meta property="og:video:duration" content={duration.toString()} />}
+  </Fragment>
+
   <section class="mx-auto flex w-full max-w-6xl flex-col gap-5 px-4 py-8 lg:py-12">
     <div>
       <p class="text-sm tracking-widest text-base-content/60 uppercase">Video</p>
       <h1 class="mt-1 text-2xl font-semibold break-words lg:text-4xl">{title}</h1>
     </div>
 
-    <VideoPlayer client:load src={streamUrl} type={video.contentType} title={title} />
+    <VideoPlayer client:load src={streamPath} type={video.contentType} title={title} />
 
     {description && (
       <p class="max-w-3xl text-base leading-relaxed whitespace-pre-line text-base-content/70">{description}</p>

src/util/video.ts

@@ -26,13 +26,15 @@ export interface VideoRange {
 export interface VideoMetadata {
   title: string;
   description: string | null;
+  width: number | null;
+  height: number | null;
+  duration: number | null;
 }
 
 interface VideoMetadataCacheEntry {
   modifiedAtMs: number;
   size: number;
-  title: string;
-  description: string | null;
+  metadata: VideoMetadata;
 }
 
 const videoMetadataCache = new Map<string, VideoMetadataCacheEntry>();
@@ -83,22 +85,28 @@ export async function getVideoMetadata(video: ResolvedVideo): Promise<VideoMetad
   const cached = videoMetadataCache.get(video.path);
 
   if (cached && cached.modifiedAtMs === modifiedAtMs && cached.size === video.size) {
-    return cached;
+    return cached.metadata;
   }
 
-  let metadata;
+  let metadata: VideoMetadata;
   try {
     const parsed = await parseFile(video.path, {
       duration: false,
       skipCovers: true
     });
 
+    const videoTrack = parsed.format.trackInfo?.find((track) => track.video);
+    const duration = parsed.format.containerDuration ?? parsed.format.duration;
+
     metadata = {
       title: parsed.common.title?.trim() || video.name,
       description:
         parsed.common.longDescription?.trim() ||
         parsed.common.description?.map((value) => value.trim()).find(Boolean) ||
-        null
+        null,
+      width: videoTrack?.video?.displayWidth ?? videoTrack?.video?.pixelWidth ?? null,
+      height: videoTrack?.video?.displayHeight ?? videoTrack?.video?.pixelHeight ?? null,
+      duration: duration ? Math.round(duration) : null
     };
   } catch {
     // couldn't read metadata
@@ -108,7 +116,7 @@ export async function getVideoMetadata(video: ResolvedVideo): Promise<VideoMetad
   videoMetadataCache.set(video.path, {
     modifiedAtMs,
     size: video.size,
-    ...metadata
+    metadata
   });
 
   return metadata;