Hello Chao, Tuesday, July 26, 2016, 9:04:49 AM, you wrote:
> I tried to debug it a bit by comparing ffmpeg code with intel media SDK. > There is sth. I don't understand. Not sure whether it's related.. > In ffmpeg, we decode the frame in a loop > <https://github.com/FFmpeg/FFmpeg/blob/master/libavcodec/qsvdec.c#L357>, it > sleeps and retries as long as MFXVideoDECODE_DecodeFrameAsync returns busy. > In intel media SDK sample_decode, it calls SyncOperation when > MFXVideoDECODE_DecodeFrameAsync returns busy. > Could this be the cause? The documentation for MFXVideoDECODE_DecodeFrameAsync says: ========= MFX_WRN_DEVICE_BUSY Hardware device is currently busy. Call this function again in a few milliseconds. ========= So if documented way does not work it looks like we have issue inside SDK. But I will try to double check sample_decode code. By the way, what is your platform? Linux? Do you use a patched kernel recommended by Intel for specific sdk version? -- Best regards, Ivan mailto:ivan.us...@nablet.com _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-devel
