Keep playhead visible for recorded streams

server/index.js

@@ -171,10 +171,13 @@ app.post('/api/session', async (request, response) => {
 
   const options = parsePlaybackOptions(request.body);
   const id = randomUUID();
-
-  const metadataStatus = METADATA_PROBE_ENABLED ? 'pending' : 'disabled';
-
-  sessions.set(id, {
+  const shouldProbeMetadata = METADATA_PROBE_ENABLED || canBestEffortResumeWithoutDuration({
+    sourceKind: source.kind,
+    originalUrl: url,
+    url: source.url,
+  });
+  const metadataStatus = shouldProbeMetadata ? 'pending' : 'disabled';
+  const session = {
     id,
     url: source.url,
     originalUrl: url,
@@ -189,12 +192,14 @@ app.post('/api/session', async (request, response) => {
     forceSplitPlayback: false,
     createdAt: Date.now(),
     lastUsedAt: Date.now(),
-  });
+  };
 
-  logInfo(`session created id=${shortId(id)} source=${source.kind} mode=${getSessionPlaybackConnectionMode(sessions.get(id))} fps=${options.fps} width=${options.width} quality=${options.quality}`);
+  sessions.set(id, session);
 
-  if (METADATA_PROBE_ENABLED) {
-    startSessionMetadataProbe(sessions.get(id));
+  logInfo(`session created id=${shortId(id)} source=${source.kind} mode=${getSessionPlaybackConnectionMode(session)} fps=${options.fps} width=${options.width} quality=${options.quality}`);
+
+  if (shouldProbeMetadata) {
+    startSessionMetadataProbe(session);
   }
 
   try {