On Wed, 8 Apr 2020 at 19:13, Dennis Mungai <dmng...@gmail.com> wrote:
> On Wed, 8 Apr 2020 at 19:04, Andy Sheimo <ashe...@gmail.com> wrote: > >> This still produces the same error; >> >> ffmpeg -threads 1 -loglevel verbose -hwaccel cuvid >> -hwaccel_output_format cuda -c:v mpeg2_cuvid -extra_hw_frames 3 -i >> "l:\welter_originals\gamera the brave\Latatude Zero-trailer.mkv" -c:a copy >> -c:v h264_nvenc test.mkv >> >> But this works to complete the job; >> >> ffmpeg -threads 1 -loglevel verbose -hwaccel cuda >> -hwaccel_output_format cuda -extra_hw_frames 3 -i >> "l:\welter_originals\gamera the brave\Latatude Zero-trailer.mkv" -c:a copy >> -c:v h264_nvenc test.mkv >> >> By not specifying -c:v mpeg2_cuvid do we know what decoder is being used? >> Is the process still completely in hardware? Do you think this is a >> limitation of the cuvid decoder? >> >> Thanks for your help. -Andy >> > > NVDEC (an alias to the CUDA hwaccel) handles GPU memory quite differently > from CUVID, and when its' in use, the decoder is not specified. > CUVID, however, was never a true hwaccel, but rather a "wrapper" that > "brings up"/initializes a specific decoder by name passed to it via -c:v, > in a similar fashion to the bring-up seen with QuickSync (-hwaccel qsv). > > I cannot speak much about why CUVID is failing on your end. I migrated all > my workflows to NVDEC an year ago. > > Perhaps omitting the hwacccel_output_format with CUVID will help? > > Try this: > > ffmpeg -threads 1 -loglevel verbose -hwaccel cuvid > -c:v mpeg2_cuvid -extra_hw_frames 3 -i > "l:\welter_originals\gamera the brave\Latatude Zero-trailer.mkv" -c:a copy > -c:v h264_nvenc test.mkv > > Then report back > And another suggestion: Try using a newer FFmpeg build. Your binary was compiled in ~2019. Retry with a new build and report back. On this mailing list, only ffmpeg git tip builds are supported. For up to date static builds, see: 1. Jon Van Sickle's builds (Linux): https://johnvansickle.com/ffmpeg/ 2. For Windows, Zeranoe's: https://ffmpeg.zeranoe.com/builds/ _______________________________________________ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".