Hi, > I have been using the following command to recompact the Blu-Ray MKV files: > > ffmpeg -y -hwaccel cuvid -c:v h264_cuvid -vsync 0 -i in.mkv -map 0 -codec:v > h264_nvenc -codec:a copy -codec:s copy -max_muxing_queue_size 4096 out.mkv > > That command does two things for me. Since I have a halfway decent graphics > card (Nvidia geforce RTX 2060), it gives me the hardware acceleration I > desire. It also retains all subtitles when recompacting the files.
I wonder if the BD/DVD ripping software you are using can be made to transcode so you wouldn’t have to do this. (Since it doesn’t sound like digitizing an exact lossless copy isn’t a priority) > That command works very well for Blu-Rays. It can reduce a 40-50GB MKV file > to about 7GB. The problem is, that only works on files produced by ripping > Blu-Rays. If I try it on DVD files, I get errors. Does this happen with all DVD files? > I am using ffmpeg version n4.1.4 on a Ubuntu Mate 20.04 system, Intel X64 > PC. Everything is up-to-date (I run apt update/upgrade regularly). The “up-to-date” release in most distros package manager default sources are usually at least a few months old, try downloading a static build if you can’t seem to build for some reason. https://www.ffmpeg.org/download.html#build-linux > BTW, I noticed that, by default, ffmpeg on Ubuntu 20.04 is installed with > Snap. I hate Snap. I had nothing but problems with MakeMKV installed with > Snap, and had to compile MakeMKV from scratch. What is snap? > I tried doing that with > ffmpeg, but I couldn't get it to install absolutely everything I needed. I > ended up with no Nvidia hardware support, for example. Try using that anyway, if it works then your solution is probably getting a newer version of FFmpeg, then you can work on configuring with hw acceleration support, or finding a static build that includes it. Regards, Ted Park _______________________________________________ ffmpeg-user mailing list [email protected] https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email [email protected] with subject "unsubscribe".
