diff options
Diffstat (limited to 'chromium/media/renderers/win/media_foundation_video_stream.cc')
| -rw-r--r-- | chromium/media/renderers/win/media_foundation_video_stream.cc | 17 |
1 files changed, 12 insertions, 5 deletions
diff --git a/chromium/media/renderers/win/media_foundation_video_stream.cc b/chromium/media/renderers/win/media_foundation_video_stream.cc index 740c199590e..500fadac723 100644 --- a/chromium/media/renderers/win/media_foundation_video_stream.cc +++ b/chromium/media/renderers/win/media_foundation_video_stream.cc @@ -185,17 +185,24 @@ HRESULT MediaFoundationH264VideoStream::GetMediaType( } bool MediaFoundationH264VideoStream::AreFormatChangesEnabled() { - // Disable format changes for H264 streams as it causes the H264 decoder MFT - // to clear previously received SPS / PPS data, causing a stall until another - // set of SPS and PPS NALUs are received. + // Disable explicit format change event for H264 to allow switching to the + // new stream without a full re-create, which will be much faster. This is + // also due to the fact that the MFT decoder can handle some format changes + // without a format change event. For format changes that the MFT decoder + // cannot support (e.g. codec change), the playback will fail later with + // MF_E_INVALIDMEDIATYPE (0xC00D36B4). return false; } #endif // BUILDFLAG(USE_PROPRIETARY_CODECS) #if BUILDFLAG(ENABLE_PLATFORM_HEVC) bool MediaFoundationHEVCVideoStream::AreFormatChangesEnabled() { - // Disable format changes for HEVC streams to work around HEVC decoder MFT - // limitation. + // Disable explicit format change event for HEVC to allow switching to the + // new stream without a full re-create, which will be much faster. This is + // also due to the fact that the MFT decoder can handle some format changes + // without a format change event. For format changes that the MFT decoder + // cannot support (e.g. codec change), the playback will fail later with + // MF_E_INVALIDMEDIATYPE (0xC00D36B4). return false; } #endif // BUILDFLAG(ENABLE_PLATFORM_HEVC) |