Unity启动，录制视频没有文件产出

test/recording-composer.test.ts

@@ -93,6 +93,24 @@ describe('recording composer', () => {
     expect(args).not.toContain('libopus');
   });
 
+  test('falls back to one video segment when input end timestamps are missing', () => {
+    const args = buildFfmpegCompositionArgs({
+      videoInputs: [
+        file('host-video.webm', 'video', 'host', 'host', '2026-06-01T00:00:00.000Z', ''),
+        file('p1-video.webm', 'video', 'p1', 'participant', '2026-06-01T00:00:02.500Z', '')
+      ],
+      audioInputs: [],
+      outputPath: 'recordings/room-1/output.webm',
+      format: 'webm'
+    });
+
+    const filter = args[args.indexOf('-filter_complex') + 1];
+    expect(filter).toContain('xstack=inputs=2');
+    expect(filter).toContain('trim=start=0,setpts=PTS-STARTPTS');
+    expect(filter).not.toContain('concat=n=0');
+    expect(args).not.toContain('-t');
+  });
+
   test('pads late participant tracks to keep the room timeline aligned', () => {
     const args = buildFfmpegCompositionArgs({
       videoInputs: [

test/websockethandler.test.ts

@@ -292,3 +292,53 @@ describe('websocket signaling test in private mode', () => {
     await wsHandler.remove(client);
   });
 });
+
+describe('recording offer validation', () => {
+  let server: WS;
+  let client: WebSocket;
+  const connectionId = "recording-room";
+
+  beforeAll(async () => {
+    wsHandler.reset("private");
+    server = new WS("ws://localhost:1234", { jsonProtocol: true });
+    client = new WebSocket("ws://localhost:1234");
+    await server.connected;
+    await wsHandler.add(client);
+    await wsHandler.onConnect(client, connectionId);
+    await expect(server).toReceiveMessage({
+      type: "connect",
+      connectionId: connectionId,
+      polite: false,
+      role: "host",
+      participantId: anyParticipantId
+    });
+  });
+
+  afterAll(() => {
+    WS.clean();
+  });
+
+  test('rejects recording offers without audio or video media sections', async () => {
+    await wsHandler.onRecordingOffer(client, {
+      recordingId: 'recording-empty-offer',
+      connectionId,
+      sdp: [
+        'v=0',
+        'o=- 25268170 0 IN IP4 0.0.0.0',
+        's=-',
+        't=0 0',
+        'a=group:BUNDLE ',
+        'a=extmap-allow-mixed',
+        'a=msid-semantic:WMS *',
+        ''
+      ].join('\r\n')
+    });
+
+    await expect(server).toReceiveMessage(expect.objectContaining({
+      from: connectionId,
+      to: "",
+      type: "on-message",
+      data: expect.stringContaining('"status":"no-media-offer"')
+    }));
+  });
+});