CUDA (nvdec) mpeg2-decode bug (ffmpeg)


I have this bug report on FFmpeg ( where I notice that using cuda gpu decoding (nvdec) is producing bad/pixelated output.

The cuvid decoder is however working as expected.

I would appreciate if someone who uses FFmpeg and has a pascal or newer nvidia would try to reproduce my issue.


This might explain the issue I’m having. I’m not a programmer so I’m not familiar with the internals. But I’m using a GTX 1650 in my DVR to transcode MPEG2 to H.264 and it starts out good then progressively gets worse. Sometimes it will catch a frame that corrects itself but I usually have to kill the stream and restart it.