You are right: "Stream #0:0(eng): Video: mpeg2video (Main)" And, anyway, your suggestion worked!! Thank you so much!
>As far as I remember MakeMKV, and from the sizes you posted, it creates >a non-reencoded dump of the disk's contents. > >DVDs are *not* encoded with H.264, but rather MPEG-2 video. So you >simply cannot use the h264_cuvid decoder on that material. ffmpeg >should have shown you what it thinks the video codec is. Check with > >$ ffmpeg -i in.mkv > >and if that confirms my suspicion, use the "mpeg2_cuvid" input codec on >your command line. > >Let us know, >cheers, >Moritz On Mon, Oct 26, 2020 at 4:31 AM Moritz Barsnick <[email protected]> wrote: > Hi Marc > > On Sun, Oct 25, 2020 at 13:21:45 -0500, Marc Barrett wrote: > > 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 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. > > > > > > [h264 @ 0x555573579a80] Invalid NAL unit 0, skipping. > > Last message repeated 5 times > > [h264 @ 0x555573579a80] non-existing PPS 2 referenced > > [h264 @ 0x555573579a80] Invalid NAL unit 0, skipping. > > Last message repeated 4 times > > [h264 @ 0x555573579a80] non-existing PPS 2 referenced > > [h264 @ 0x555573579a80] decode_slice_header error > > As Carl/z pointed out: > > But there _is_ output from ffmpeg, and that can tell us a lot about the > files. > > You never actually showed us the complete output from ffmpeg. Even just > an ffprobe of the input file would suffice. > > > 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). > > (As others mentionend: That ffmpeg version is not up to date, though. > You should try to get hold of a recent binary.) > > > As far as I remember MakeMKV, and from the sizes you posted, it creates > a non-reencoded dump of the disk's contents. > > DVDs are *not* encoded with H.264, but rather MPEG-2 video. So you > simply cannot use the h264_cuvid decoder on that material. ffmpeg > should have shown you what it thinks the video codec is. Check with > > $ ffmpeg -i in.mkv > > and if that confirms my suspicion, use the "mpeg2_cuvid" input codec on > your command line. > > Let us know, > cheers, > Moritz > _______________________________________________ > 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". _______________________________________________ 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".
