[FFmpeg-devel] [PATCH]: reset resample-sample_fmt in the input stream after decode initialization

Sumit Agarwal sumita at nvidia.com
Fri Dec 16 14:35:19 EET 2016

h264_cuvid (without hwaccel) + hwupload_cuda filter is currently broken. The resample_sample_fmt in the input stream is not updated after h264_cuvid decoder is initialized, due to this reconfiguration of the filter graph is triggered after the decode. During reconfiguration, Scale filter is inserted after hwupload_cuda filter and the filter configuration fails during format merging.

Try the following command line to observe the issue:

ffmpeg -y -c:v h264_cuvid -i amazing.264 -vf hwupload_cuda -c:v h264_nvenc out.264


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