diff --git a/server/media.js b/server/media.js
index 4c40fcf..b1ccde3 100644
--- a/server/media.js
+++ b/server/media.js
@@ -151,10 +151,30 @@ function transcode(id, done) {
});
}
+// Poster frame, generated to a temp then renamed so a reader never sees a half-written JPEG (the /thumbs
+// handler and this can both target the same file). Warming it at upload means the chat bubble shows the
+// poster immediately instead of a blank tile while ffmpeg runs on the first view.
+function ensureThumb(id) {
+ const thumb = path.join(UPLOADS_DIR, id + '.thumb.jpg');
+ const src = path.join(UPLOADS_DIR, id);
+ if (!src.startsWith(UPLOADS_DIR)) return;
+ if (fs.existsSync(thumb)) return;
+ fs.stat(src, (e) => {
+ if (e) return;
+ const tmp = thumb + '.part';
+ execFile('ffmpeg', ['-y', '-ss', '0.5', '-i', src, '-frames:v', '1', '-vf', 'scale=480:-2', '-q:v', '4', tmp],
+ { timeout: 15000 }, (err) => {
+ if (err) { try { fs.unlinkSync(tmp); } catch (_) {} return; }
+ try { fs.renameSync(tmp, thumb); } catch (_) { try { fs.unlinkSync(tmp); } catch (__) {} }
+ });
+ });
+}
+
// Queue a freshly uploaded (or first-played) video. Cheap and idempotent: safe to call on every
// /stream hit, which is also how pre-existing uploads get backfilled.
function ensureWebRendition(id, mime) {
if (!/^video\//.test(mime || '')) return;
+ ensureThumb(id); // warm the poster so the bubble isn't blank
if (pending.has(id) || failed.has(id) || hasWebRendition(id)) return;
pending.add(id);
queue.push(id);
diff --git a/server/public/home.html b/server/public/home.html
index db08e02..0861912 100644
--- a/server/public/home.html
+++ b/server/public/home.html
@@ -1197,7 +1197,7 @@
-