[FFmpeg-user] Linux PC Locks Up When Encoding Video
jpboard2 at yahoo.com
Wed Jul 6 20:11:50 EEST 2022
I'm trying to encode video that I captured from a BlackMagic capture card.
The input format is MJPEG. The ffmpeg encode command is
ffmpeg -i IN.avi -c:a copy -c:v libx264 -vf eq=brightness=0.05 -preset medium -crf 20 OUT.avi
This command intermittently locks up the PC: if i repeatedly try to encode the same10-minute segment,sometimes the encode works, however it usually fails within an houror so. When that happens, the screen is frozen and I have to power cycle toreboot. This problem occurred on an Intel CPU running Ubuntu 16. I then installed
Ubuntu 18 and the problem still occurred. The same input file encodes successfullywith ffmpeg on a different machine (so I think the input file is okay). I'm using thecurrent ffmpeg snapshot built from recent source. This problem also occurs using apre-built ffmpeg binary from a few months ago: ffmpeg-4.1.2-amd64-static
First Question: Does anyone know why this happens, how to fix it, or how to determine
why this is happening?
Second Question: I know my GPU on this machine has problems. Does ffmpeg orlibx264 use the GPU when encoding? If so, can I tell ffmpeg not to use the GPU?
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