我正在研究一种会话拓扑，该拓扑记录视频（带有音频），同时使用EVR显示视频流。我将SampleGrabber接收器用于视频和音频流，因此可以轻松控制何时开始/结束录制（使用接收器编写器）并根据需要提取样本数据（用于捕获静止图像和显示麦克风的音频电平）。我正在使用一个Tee节点在EVR和视频samplegrabber之间拆分视频供稿，并使用copierMFT将示例传递到EVR。音频和视频样本采集器都标记为“无速率”。
拓扑的每个分支都单独工作，但是当我将两者都添加到拓扑中时，媒体会话都无法启动，并且在MESessionStarted事件上设置了status =“ E_UNEXPECTED灾难性错误”。这是我在MFTrace日志中发现的唯一错误。我的相机永远不会打开，我的样品采集卡上也没有任何样品。拓扑似乎可以正确解析，因此我不确定会话未预期到什么。 MediaSession :: Start的文档未提及此错误。我目前的猜测是，这与同步演示时钟有关，但是将samplegrabber输出节点设置为无速率似乎没有帮助。在收到“拓扑就绪”状态事件后，检查会话的时钟状态将返回MFCLOCK_STATE_INVALID。
在同一拓扑中具有实时摄像源和麦克风源是否需要任何特殊设置？有什么方法可以获取有关E_UNEXPECTED错误的更多信息？
感谢您深入浅出。这是我的mftrace日志的片段，其中显示了就绪的拓扑和错误：
12656,14E8 19:25:29.69496 CTopologyHelpers::Trace @02A799F8 >>>>>>>>>>>>> ready topology
12656,14E8 19:25:29.69499 CTopologyHelpers::TraceNode @ Node 0 @02A7A110 ID:317000000001, 0 inputs, 1 outputs, type 1, MF_TOPONODE_MARKIN_HERE=1;MF_TOPONODE_MARKOUT_HERE=1;MF_TOPONODE_MEDIASTART=0 (0,0);MF_TOPONODE_SOURCE=@02A95200;MF_TOPONODE_PRESENTATION_DESCRIPTOR=@02A63820;MF_TOPONODE_STREAM_DESCRIPTOR=@02A662C8;{89485B85-2FFA-4547-B269-B82C79EE197C}=1;{9C86CC4E-68CE-4CFF-AA1E-9A5A40D5B4E0}=@02A85698
12656,14E8 19:25:29.69500 CMFTopologyNodeDetours::GetGUID @02A7A110 attribute not found guidKey = MF_TOPONODE_TRANSFORM_OBJECTID
12656,14E8 19:25:29.69501 CTopologyHelpers::TraceObject @ Source @02A95200 {00000000-0000-0000-0000-000000000000} (C:\WINDOWS\SYSTEM32\MFCORE.DLL), MFMEDIASOURCE_CHARACTERISTICS=0x00000005
12656,14E8 19:25:29.69507 CTopologyHelpers::TraceStream @ Output stream 0, connected to node @02A7A188 stream 0, MT: MF_MT_FRAME_SIZE=2748779069920 (640,480);MF_MT_AVG_BITRATE=147456000;MF_MT_YUV_MATRIX=2;MF_MT_MAJOR_TYPE=MEDIATYPE_Video;MF_MT_VIDEO_LIGHTING=3;MF_MT_DEFAULT_STRIDE=1280;MF_MT_VIDEO_CHROMA_SITING=6;MF_MT_AM_FORMAT_TYPE=FORMAT_VIDEOINFO2;MF_MT_FIXED_SIZE_SAMPLES=1;MF_MT_VIDEO_NOMINAL_RANGE=2;MF_MT_FRAME_RATE=128849018881 (30,1);MF_MT_PIXEL_ASPECT_RATIO=4294967297 (1,1);MF_MT_ALL_SAMPLES_INDEPENDENT=1;MF_MT_FRAME_RATE_RANGE_MIN=128849018881 (30,1);MF_MT_SAMPLE_SIZE=614400;MF_MT_VIDEO_PRIMARIES=2;MF_MT_INTERLACE_MODE=2;MF_MT_FRAME_RATE_RANGE_MAX=128849018881 (30,1);MF_MT_SUBTYPE=MFVideoFormat_YUY2
12656,14E8 19:25:29.69509 CTopologyHelpers::TraceNode @ Node 1 @02A7A188 ID:317000000002, 1 inputs, 2 outputs, type 3, MF_TOPONODE_PRIMARYOUTPUT=0;{89485B85-2FFA-4547-B269-B82C79EE197C}=1;{9C86CC4E-68CE-4CFF-AA1E-9A5A40D5B4E0}=@02A7CE00
12656,14E8 19:25:29.69509 CMFTopologyNodeDetours::GetGUID @02A7A188 attribute not found guidKey = MF_TOPONODE_TRANSFORM_OBJECTID
12656,14E8 19:25:29.69509 CTopologyHelpers::TraceObject @ Tee @00000000 {00000000-0000-0000-0000-000000000000} ((null)), (null)
12656,14E8 19:25:29.69514 CTopologyHelpers::TraceStream @ Input stream 0, connected to node @02A7A110 stream 0, MT: MF_MT_FRAME_SIZE=2748779069920 (640,480);MF_MT_AVG_BITRATE=147456000;MF_MT_YUV_MATRIX=2;MF_MT_MAJOR_TYPE=MEDIATYPE_Video;MF_MT_VIDEO_LIGHTING=3;MF_MT_DEFAULT_STRIDE=1280;MF_MT_VIDEO_CHROMA_SITING=6;MF_MT_AM_FORMAT_TYPE=FORMAT_VIDEOINFO2;MF_MT_FIXED_SIZE_SAMPLES=1;MF_MT_VIDEO_NOMINAL_RANGE=2;MF_MT_FRAME_RATE=128849018881 (30,1);MF_MT_PIXEL_ASPECT_RATIO=4294967297 (1,1);MF_MT_ALL_SAMPLES_INDEPENDENT=1;MF_MT_FRAME_RATE_RANGE_MIN=128849018881 (30,1);MF_MT_SAMPLE_SIZE=614400;MF_MT_VIDEO_PRIMARIES=2;MF_MT_INTERLACE_MODE=2;MF_MT_FRAME_RATE_RANGE_MAX=128849018881 (30,1);MF_MT_SUBTYPE=MFVideoFormat_YUY2
12656,14E8 19:25:29.69518 CTopologyHelpers::TraceStream @ Output stream 0, connected to node @02A79D68 stream 0, MT: MF_MT_FRAME_SIZE=2748779069920 (640,480);MF_MT_AVG_BITRATE=147456000;MF_MT_YUV_MATRIX=2;MF_MT_MAJOR_TYPE=MEDIATYPE_Video;MF_MT_VIDEO_LIGHTING=3;MF_MT_DEFAULT_STRIDE=1280;MF_MT_VIDEO_CHROMA_SITING=6;MF_MT_AM_FORMAT_TYPE=FORMAT_VIDEOINFO2;MF_MT_FIXED_SIZE_SAMPLES=1;MF_MT_VIDEO_NOMINAL_RANGE=2;MF_MT_FRAME_RATE=128849018881 (30,1);MF_MT_PIXEL_ASPECT_RATIO=4294967297 (1,1);MF_MT_ALL_SAMPLES_INDEPENDENT=1;MF_MT_FRAME_RATE_RANGE_MIN=128849018881 (30,1);MF_MT_SAMPLE_SIZE=614400;MF_MT_VIDEO_PRIMARIES=2;MF_MT_INTERLACE_MODE=2;MF_MT_FRAME_RATE_RANGE_MAX=128849018881 (30,1);MF_MT_SUBTYPE=MFVideoFormat_YUY2
12656,14E8 19:25:29.69522 CTopologyHelpers::TraceStream @ Output stream 1, connected to node @02A7B1F0 stream 0, MT: MF_MT_FRAME_SIZE=2748779069920 (640,480);MF_MT_AVG_BITRATE=147456000;MF_MT_YUV_MATRIX=2;MF_MT_MAJOR_TYPE=MEDIATYPE_Video;MF_MT_VIDEO_LIGHTING=3;MF_MT_DEFAULT_STRIDE=1280;MF_MT_VIDEO_CHROMA_SITING=6;MF_MT_AM_FORMAT_TYPE=FORMAT_VIDEOINFO2;MF_MT_FIXED_SIZE_SAMPLES=1;MF_MT_VIDEO_NOMINAL_RANGE=2;MF_MT_FRAME_RATE=128849018881 (30,1);MF_MT_PIXEL_ASPECT_RATIO=4294967297 (1,1);MF_MT_ALL_SAMPLES_INDEPENDENT=1;MF_MT_FRAME_RATE_RANGE_MIN=128849018881 (30,1);MF_MT_SAMPLE_SIZE=614400;MF_MT_VIDEO_PRIMARIES=2;MF_MT_INTERLACE_MODE=2;MF_MT_FRAME_RATE_RANGE_MAX=128849018881 (30,1);MF_MT_SUBTYPE=MFVideoFormat_YUY2
12656,14E8 19:25:29.69524 CTopologyHelpers::TraceNode @ Node 2 @02A79D68 ID:317000000005, 1 inputs, 1 outputs, type 2, {89485B85-2FFA-4547-B269-B82C79EE197C}=1;{9C86CC4E-68CE-4CFF-AA1E-9A5A40D5B4E0}=@02A85908
12656,14E8 19:25:29.69524 CMFTopologyNodeDetours::GetGUID @02A79D68 attribute not found guidKey = MF_TOPONODE_TRANSFORM_OBJECTID
12656,14E8 19:25:29.69526 CTopologyHelpers::TraceObject @ MFT @02A6DAE8 {00000000-0000-0000-0000-000000000000} (C:\WINDOWS\SYSTEM32\MFCORE.DLL), MFT_SUPPORT_DYNAMIC_FORMAT_CHANGE=1;{851745D5-C3D6-476D-9527-498EF2D10D18}=4
12656,14E8 19:25:29.69531 CTopologyHelpers::TraceStream @ Input stream 0, connected to node @02A7A188 stream 0, MT: MF_MT_FRAME_SIZE=2748779069920 (640,480);MF_MT_AVG_BITRATE=147456000;MF_MT_YUV_MATRIX=2;MF_MT_MAJOR_TYPE=MEDIATYPE_Video;MF_MT_VIDEO_LIGHTING=3;MF_MT_DEFAULT_STRIDE=1280;MF_MT_VIDEO_CHROMA_SITING=6;MF_MT_AM_FORMAT_TYPE=FORMAT_VIDEOINFO2;MF_MT_FIXED_SIZE_SAMPLES=1;MF_MT_VIDEO_NOMINAL_RANGE=2;MF_MT_FRAME_RATE=128849018881 (30,1);MF_MT_PIXEL_ASPECT_RATIO=4294967297 (1,1);MF_MT_ALL_SAMPLES_INDEPENDENT=1;MF_MT_FRAME_RATE_RANGE_MIN=128849018881 (30,1);MF_MT_SAMPLE_SIZE=614400;MF_MT_VIDEO_PRIMARIES=2;MF_MT_INTERLACE_MODE=2;MF_MT_FRAME_RATE_RANGE_MAX=128849018881 (30,1);MF_MT_SUBTYPE=MFVideoFormat_YUY2
12656,14E8 19:25:29.69536 CTopologyHelpers::TraceStream @ Output stream 0, connected to node @02A79EA0 stream 0, MT: MF_MT_FRAME_SIZE=2748779069920 (640,480);MF_MT_AVG_BITRATE=147456000;MF_MT_YUV_MATRIX=2;MF_MT_MAJOR_TYPE=MEDIATYPE_Video;MF_MT_VIDEO_LIGHTING=3;MF_MT_DEFAULT_STRIDE=1280;MF_MT_VIDEO_CHROMA_SITING=6;MF_MT_AM_FORMAT_TYPE=FORMAT_VIDEOINFO2;MF_MT_FIXED_SIZE_SAMPLES=1;MF_MT_VIDEO_NOMINAL_RANGE=2;MF_MT_FRAME_RATE=128849018881 (30,1);MF_MT_PIXEL_ASPECT_RATIO=4294967297 (1,1);MF_MT_ALL_SAMPLES_INDEPENDENT=1;MF_MT_FRAME_RATE_RANGE_MIN=128849018881 (30,1);MF_MT_SAMPLE_SIZE=614400;MF_MT_VIDEO_PRIMARIES=2;MF_MT_INTERLACE_MODE=2;MF_MT_FRAME_RATE_RANGE_MAX=128849018881 (30,1);MF_MT_SUBTYPE=MFVideoFormat_YUY2
12656,14E8 19:25:29.69538 CTopologyHelpers::TraceNode @ Node 3 @02A79DE0 ID:317000000003, 1 inputs, 0 outputs, type 0, MF_TOPONODE_STREAMID=0;MF_TOPONODE_DISABLE_PREROLL=1;{89485B85-2FFA-4547-B269-B82C79EE197C}=1;{9C86CC4E-68CE-4CFF-AA1E-9A5A40D5B4E0}=@02A85AE0
12656,14E8 19:25:29.69539 CMFTopologyNodeDetours::GetGUID @02A79DE0 attribute not found guidKey = MF_TOPONODE_TRANSFORM_OBJECTID
12656,14E8 19:25:29.69539 CTopologyHelpers::TraceObject @ Sink @02A6FB28 {00000000-0000-0000-0000-000000000000} (C:\WINDOWS\SYSTEM32\MFCORE.DLL), (null)
12656,14E8 19:25:29.69544 CTopologyHelpers::TraceStream @ Input stream 0, connected to node @02A7B1F0 stream 0, MT: MF_MT_FRAME_SIZE=2748779069920 (640,480);MF_MT_YUV_MATRIX=2;MF_MT_MAJOR_TYPE=MEDIATYPE_Video;MF_MT_VIDEO_LIGHTING=3;MF_MT_DEFAULT_STRIDE=2560;MF_MT_VIDEO_CHROMA_SITING=6;MF_MT_GEOMETRIC_APERTURE=00 00 00 00 00 00 00 00 80 02 00 00 e0 01 00 00 ;MF_MT_FIXED_SIZE_SAMPLES=1;MF_MT_VIDEO_NOMINAL_RANGE=2;MF_MT_FRAME_RATE=42949672960333333 (10000000,333333);MF_MT_PIXEL_ASPECT_RATIO=4294967297 (1,1);MF_MT_ALL_SAMPLES_INDEPENDENT=1;MF_MT_SAMPLE_SIZE=1228800;MF_MT_VIDEO_PRIMARIES=2;MF_MT_INTERLACE_MODE=2;MF_MT_SUBTYPE=MFVideoFormat_RGB32
12656,14E8 19:25:29.69546 CTopologyHelpers::TraceNode @ Node 4 @02A7B1F0 ID:31700000000C, 1 inputs, 1 outputs, type 2, MF_TOPONODE_TRANSFORM_OBJECTID={98230571-0087-4204-B020-3282538E57D3};{89485B85-2FFA-4547-B269-B82C79EE197C}=1;{9C86CC4E-68CE-4CFF-AA1E-9A5A40D5B4E0}=@02A86040
12656,14E8 19:25:29.69546 CTopologyHelpers::TraceObject @ MFT @02A7A488 {98230571-0087-4204-B020-3282538E57D3} (C:\Windows\SYSTEM32\colorcnv.dll), <NULL>
12656,14E8 19:25:29.69551 CTopologyHelpers::TraceStream @ Input stream 0, connected to node @02A7A188 stream 1, MT: MF_MT_FRAME_SIZE=2748779069920 (640,480);MF_MT_AVG_BITRATE=147456000;MF_MT_YUV_MATRIX=2;MF_MT_MAJOR_TYPE=MEDIATYPE_Video;MF_MT_VIDEO_LIGHTING=3;MF_MT_DEFAULT_STRIDE=1280;MF_MT_VIDEO_CHROMA_SITING=6;MF_MT_FIXED_SIZE_SAMPLES=1;MF_MT_VIDEO_NOMINAL_RANGE=2;MF_MT_FRAME_RATE=128849018881 (30,1);MF_MT_PIXEL_ASPECT_RATIO=4294967297 (1,1);MF_MT_ALL_SAMPLES_INDEPENDENT=1;MF_MT_SAMPLE_SIZE=614400;MF_MT_VIDEO_PRIMARIES=2;MF_MT_INTERLACE_MODE=2;MF_MT_SUBTYPE=MFVideoFormat_YUY2
12656,14E8 19:25:29.69556 CTopologyHelpers::TraceStream @ Output stream 0, connected to node @02A79DE0 stream 0, MT: MF_MT_FRAME_SIZE=2748779069920 (640,480);MF_MT_YUV_MATRIX=2;MF_MT_MAJOR_TYPE=MEDIATYPE_Video;MF_MT_VIDEO_LIGHTING=3;MF_MT_DEFAULT_STRIDE=2560;MF_MT_VIDEO_CHROMA_SITING=6;MF_MT_GEOMETRIC_APERTURE=00 00 00 00 00 00 00 00 80 02 00 00 e0 01 00 00 ;MF_MT_FIXED_SIZE_SAMPLES=1;MF_MT_VIDEO_NOMINAL_RANGE=2;MF_MT_FRAME_RATE=42949672960333333 (10000000,333333);MF_MT_PIXEL_ASPECT_RATIO=4294967297 (1,1);MF_MT_ALL_SAMPLES_INDEPENDENT=1;MF_MT_SAMPLE_SIZE=1228800;MF_MT_VIDEO_PRIMARIES=2;MF_MT_INTERLACE_MODE=2;MF_MT_SUBTYPE=MFVideoFormat_RGB32
12656,14E8 19:25:29.69559 CTopologyHelpers::TraceNode @ Node 5 @02A79EA0 ID:317000000004, 1 inputs, 0 outputs, type 0, MF_TOPONODE_STREAMID=0;MF_TOPONODE_NOSHUTDOWN_ON_REMOVE=0;MF_TOPONODE_DISABLE_PREROLL=1;{89485B85-2FFA-4547-B269-B82C79EE197C}=1;{9C86CC4E-68CE-4CFF-AA1E-9A5A40D5B4E0}=@02A86218;{B8AA3129-DFC9-423A-8ACD-1D82850A3D1F}=@02A8B9E0
12656,14E8 19:25:29.69560 CMFTopologyNodeDetours::GetGUID @02A79EA0 attribute not found guidKey = MF_TOPONODE_TRANSFORM_OBJECTID
12656,14E8 19:25:29.69560 CTopologyHelpers::TraceObject @ Sink @02A8E5D4 {00000000-0000-0000-0000-000000000000} (C:\WINDOWS\SYSTEM32\MF.dll), (null)
12656,14E8 19:25:29.69565 CTopologyHelpers::TraceStream @ Input stream 0, connected to node @02A79D68 stream 0, MT: MF_MT_FRAME_SIZE=2748779069920 (640,480);MF_MT_AVG_BITRATE=147456000;MF_MT_YUV_MATRIX=2;MF_MT_MAJOR_TYPE=MEDIATYPE_Video;MF_MT_VIDEO_LIGHTING=3;MF_MT_DEFAULT_STRIDE=1280;MF_MT_VIDEO_CHROMA_SITING=6;MF_MT_AM_FORMAT_TYPE=FORMAT_VIDEOINFO2;MF_MT_FIXED_SIZE_SAMPLES=1;MF_MT_VIDEO_NOMINAL_RANGE=2;MF_MT_FRAME_RATE=128849018881 (30,1);MF_MT_PIXEL_ASPECT_RATIO=4294967297 (1,1);MF_MT_ALL_SAMPLES_INDEPENDENT=1;MF_MT_FRAME_RATE_RANGE_MIN=128849018881 (30,1);MF_MT_SAMPLE_SIZE=614400;MF_MT_VIDEO_PRIMARIES=2;MF_MT_INTERLACE_MODE=2;MF_MT_FRAME_RATE_RANGE_MAX=128849018881 (30,1);MF_MT_SUBTYPE=MFVideoFormat_YUY2
12656,14E8 19:25:29.69568 CTopologyHelpers::TraceNode @ Node 6 @02A79F18 ID:317000000006, 0 inputs, 1 outputs, type 1, MF_TOPONODE_MARKIN_HERE=1;MF_TOPONODE_MARKOUT_HERE=1;MF_TOPONODE_MEDIASTART=0 (0,0);MF_TOPONODE_SOURCE=@02A65D40;MF_TOPONODE_PRESENTATION_DESCRIPTOR=@02A63CE8;MF_TOPONODE_STREAM_DESCRIPTOR=@02A63048;{89485B85-2FFA-4547-B269-B82C79EE197C}=1;{9C86CC4E-68CE-4CFF-AA1E-9A5A40D5B4E0}=@02A86370
12656,14E8 19:25:29.69568 CMFTopologyNodeDetours::GetGUID @02A79F18 attribute not found guidKey = MF_TOPONODE_TRANSFORM_OBJECTID
12656,14E8 19:25:29.69569 CTopologyHelpers::TraceObject @ Source @02A65D40 {00000000-0000-0000-0000-000000000000} (C:\WINDOWS\SYSTEM32\MFCORE.DLL), MFMEDIASOURCE_CHARACTERISTICS=0x00000005
12656,14E8 19:25:29.69571 CTopologyHelpers::TraceStream @ Output stream 0, connected to node @02A7BFA0 stream 0, MT: MF_MT_AUDIO_AVG_BYTES_PER_SECOND=384000;MF_MT_AUDIO_BLOCK_ALIGNMENT=8;MF_MT_AUDIO_NUM_CHANNELS=2;MF_MT_MAJOR_TYPE=MEDIATYPE_Audio;MF_MT_AUDIO_CHANNEL_MASK=3;MF_MT_AUDIO_SAMPLES_PER_SECOND=48000;MF_MT_ALL_SAMPLES_INDEPENDENT=1;MF_MT_AUDIO_BITS_PER_SAMPLE=32;MF_MT_SUBTYPE=MFAudioFormat_Float
12656,14E8 19:25:29.69573 CTopologyHelpers::TraceNode @ Node 7 @02A7BDC0 ID:317000000007, 1 inputs, 0 outputs, type 0, MF_TOPONODE_STREAMID=0;MF_TOPONODE_DISABLE_PREROLL=1;{89485B85-2FFA-4547-B269-B82C79EE197C}=1;{9C86CC4E-68CE-4CFF-AA1E-9A5A40D5B4E0}=@02A864E0
12656,14E8 19:25:29.69573 CMFTopologyNodeDetours::GetGUID @02A7BDC0 attribute not found guidKey = MF_TOPONODE_TRANSFORM_OBJECTID
12656,14E8 19:25:29.69574 CTopologyHelpers::TraceObject @ Sink @02A70410 {00000000-0000-0000-0000-000000000000} (C:\WINDOWS\SYSTEM32\MFCORE.DLL), (null)
12656,14E8 19:25:29.69575 CTopologyHelpers::TraceStream @ Input stream 0, connected to node @02A7BFA0 stream 0, MT: MF_MT_AUDIO_AVG_BYTES_PER_SECOND=88200;MF_MT_AUDIO_BLOCK_ALIGNMENT=2;MF_MT_AUDIO_NUM_CHANNELS=1;MF_MT_MAJOR_TYPE=MEDIATYPE_Audio;MF_MT_AUDIO_CHANNEL_MASK=4;MF_MT_AUDIO_SAMPLES_PER_SECOND=44100;MF_MT_ALL_SAMPLES_INDEPENDENT=1;MF_MT_AUDIO_BITS_PER_SAMPLE=16;MF_MT_SUBTYPE=MFAudioFormat_PCM
12656,14E8 19:25:29.69577 CTopologyHelpers::TraceNode @ Node 8 @02A7BFA0 ID:317000000010, 1 inputs, 1 outputs, type 2, MF_TOPONODE_TRANSFORM_OBJECTID={F447B69E-1884-4A7E-8055-346F74D6EDB3};{89485B85-2FFA-4547-B269-B82C79EE197C}=1;{9C86CC4E-68CE-4CFF-AA1E-9A5A40D5B4E0}=@02AAA068
12656,14E8 19:25:29.69578 CTopologyHelpers::TraceObject @ MFT @02A7C4AC {F447B69E-1884-4A7E-8055-346F74D6EDB3} (C:\Windows\SYSTEM32\resampledmo.dll), <NULL>
12656,14E8 19:25:29.69581 CTopologyHelpers::TraceStream @ Input stream 0, connected to node @02A79F18 stream 0, MT: MF_MT_AUDIO_AVG_BYTES_PER_SECOND=384000;MF_MT_AUDIO_BLOCK_ALIGNMENT=8;MF_MT_AUDIO_NUM_CHANNELS=2;MF_MT_MAJOR_TYPE=MEDIATYPE_Audio;MF_MT_AUDIO_CHANNEL_MASK=3;MF_MT_AUDIO_SAMPLES_PER_SECOND=48000;MF_MT_ALL_SAMPLES_INDEPENDENT=1;MF_MT_AUDIO_BITS_PER_SAMPLE=32;MF_MT_SUBTYPE=MFAudioFormat_Float
12656,14E8 19:25:29.69583 CTopologyHelpers::TraceStream @ Output stream 0, connected to node @02A7BDC0 stream 0, MT: MF_MT_AUDIO_AVG_BYTES_PER_SECOND=88200;MF_MT_AUDIO_BLOCK_ALIGNMENT=2;MF_MT_AUDIO_NUM_CHANNELS=1;MF_MT_MAJOR_TYPE=MEDIATYPE_Audio;MF_MT_AUDIO_SAMPLES_PER_SECOND=44100;MF_MT_AUDIO_PREFER_WAVEFORMATEX=1;MF_MT_ALL_SAMPLES_INDEPENDENT=1;MF_MT_AUDIO_BITS_PER_SAMPLE=16;MF_MT_SUBTYPE=MFAudioFormat_PCM
12656,14E8 19:25:29.69584 CTopologyHelpers::Trace @02A799F8 MF_TOPOLOGY_RESOLUTION_STATUS = 0
12656,14E8 19:25:29.69584 CTopologyHelpers::Trace @02A799F8 <<<<<<<<<<<<< ready topology
12656,14E8 19:25:29.69590 CKernel32ExportDetours::OutputDebugStringA @ TOPOLOGY READY
12656,14E8 19:25:29.69600 CMFTopologyDetours::GetUINT32 @02A799F8 attribute not found guidKey = {9C27891A-ED7A-40E1-88E8-B22727A024EE}
12656,14E8 19:25:29.69612 CMFMediaSessionDetours::EndGetEvent @02A6DDC0 Met=103 MESessionStarted, value (empty), failed HrStatus=8000FFFF E_UNEXPECTED,
UPDATE 1：根据mofo77的建议，我尝试使用systemtimesource创建一个新的presentationclock，并将其设置为设置EVR的演示时钟。不幸的是，这并没有改变任何东西。
[进一步研究TopologyReady事件，我注意到时钟没有演示时间源：
IMFClock* pClock;
hr = pMediaSession->GetClock(&pClock);
MFCLOCK_STATE state;
hr = pClock->GetState(0, &state);
//state == MFCLOCK_STATE_INVALID
IMFPresentationClock* pPresentationClock;
hr = pClock->QueryInterface(&pPresentationClock);
IMFPresentationTimeSource* pPresentationTimeSource;
hr = pPresentationClock->GetTimeSource(&pPresentationTimeSource);
//hr == 0xc00d9c41 : No Presentation Time Source has been specified.
我尝试创建systemtimesource并将其设置在mediasession的时钟上，但这也无济于事。
仅具有视频分支（或仅具有音频分支），我的samplegrabber会收到OnSetPresentationClock回调。将两者都添加到拓扑中后，这种情况就永远不会发生，并且我在MESessionStarted事件中获得了灾难性的故障状态。
我认为您需要向EVR提供有效的时钟。
UPDATE
在您进行更新并更好地阅读了问题之后，似乎您没有使用MFCreateAggregateSource来聚合音频和视频捕获。
如果我没错，您可以检查我的项目：MFNode
在MFNodePlayer下，您具有MFCreateAggregateSource的源代码，以及在Media Session中使用音频/视频捕获的概念。您无需担心时钟，因为是的，媒体会话可处理演示时钟。
[Venki.thiyag在MSDN上也回答了这个问题
如果您的拓扑有2个来源，则拓扑必须为通过Sequencer源添加。
请参阅https://msdn.microsoft.com/en-us/library/windows/desktop/ms698996(v=vs.85).aspx有关更多详细信息。
这是Sequencer Source文档中的报价
您可以使用它来创建播放列表，或播放多个同时来源。
不幸的是，Sequencer Source的文档没有详细说明如何“ 同时播放来自多个源的[捕获]流”。注意同时强调。
[标题为“奖励（实验性）功能：同步播放多个视频”的ofxWMFVideoPlayer技术说明部分中描述了如何使用定序器源同时从多个媒体源捕获的方法]
ofxWMFVideoPlayer技术说明还建议使用MFCreateAggregateSource功能作为同时从多个媒体源捕获的替代方法。
MFCreateAggregateSource功能是从多个媒体设备源同时捕获的非常直接的方法。此引自MFCreateAggregateSource文档的说明。
聚合的媒体源可用于合并来自单独的媒体来源。例如，您可以使用它来组合一个视频捕获源和音频捕获源。