2018-12-18 19:17 GMT+01:00, sean darcy <[email protected]>: > I've got a VOB soft telecined 24 fps -> 3000/1001. Actually 28.83 fps - > what's that about ? > > ffprobej 0.VOB > Input #0, mpeg, from '0.VOB': > Duration: 01:42:49.76, start: 0.023444, bitrate: 5473 kb/s > Stream #0:0[0x1e0]: Video: mpeg2video (Main), yuv420p(tv, > progressive), 720x480 [SAR 8:9 DAR 4:3], Closed Captions, 28.83 fps, > 59.94 tbr, 90k tbn, 59.94 tbc > Stream #0:1[0x80]: Audio: ac3, 48000 Hz, 5.1(side), fltp, 384 kb/s > .......... > pkt_duration=4504 > pkt_duration=3003 > pkt_duration=4504 > pkt_duration=3003 > pkt_duration=4504 > pkt_duration=3003 > > > I'd like to detelectine, I want to keep the original , so I'd prefer not > to reencode. > > I tried > > ffmpeg -i 0.VOB -r 24000/1001 -c copy test.mkv > > ffprobej test.mkv > Input #0, matroska,webm, from 'test.mkv': > Metadata: > ENCODER : Lavf58.23.102 > Duration: 01:42:49.82, start: 0.000000, bitrate: 4977 kb/s > Stream #0:0: Video: mpeg2video (Main), yuv420p(tv, progressive), > 720x480 [SAR 8:9 DAR 4:3], Closed Captions, 28.83 fps, 28.83 tbr, 1k > tbn, 59.94 tbc (default) > Metadata: > DURATION : 01:42:49.819000000 > Stream #0:1: Audio: ac3, 48000 Hz, 5.1(side), fltp, 384 kb/s (default) > Metadata: > DURATION : 01:42:49.728000000 > > > So I tried: > > ffmpeg -i 0.VOB -r 24000/1001 -map v -map i:0x80 -c:v mpeg2video -b:v > 5500k -c:a copy test3.mkv > ffmpeg version git-snapshot-20181206-RPMFusion Copyright (c) 2000-2018 > the FFmpeg developers > built with gcc 8 (GCC) > > configuration: --prefix=/usr --bindir=/usr/bin > --datadir=/usr/share/ffmpeg --incdir=/usr/include/ffmpeg --libdir=/usr/li > b64 --mandir=/usr/share/man --arch=x86_64 --optflags='-O2 -ffast-math > -march=native -ftree-vectorize -fomit-frame-pointer > -pipe -fPIC' --enable-bzlib --disable-crystalhd --enable-fontconfig > --enable-frei0r --enable-gcrypt --enable-gnutls --enab > le-ladspa --enable-libass --enable-libbluray --enable-libcdio > --disable-libdav1d --enable-libfdk-aac --enable-nonfree --en > able-indev=jack --enable-libfreetype --enable-libfribidi --enable-libgsm > --enable-libmp3lame --enable-openal --enable-open > cl --disable-libopencv --enable-opengl --enable-libopenjpeg > --enable-libopus --enable-libpulse --enable-libsoxr --enable-l > ibspeex --enable-libtheora --enable-libvorbis --enable-libv4l2 > --enable-libvpx --enable-libwebp --enable-libx264 --enable- > libx265 --enable-avfilter --enable-postproc --enable-pthreads > --disable-static --enable-shared --enable-gpl --enable-versi > on3 --enable-nonfree --disable-debug --enable-stripping > --shlibdir=/usr/lib64 --enable-runtime-cpudetect > libavutil 56. 24.101 / 56. 24.101 > > libavcodec 58. 41.101 / 58. 41.101 > > libavformat 58. 23.102 / 58. 23.102 > > libavdevice 58. 6.101 / 58. 6.101 > > libavfilter 7. 46.101 / 7. 46.101 > > libswscale 5. 4.100 / 5. 4.100 > > libswresample 3. 4.100 / 3. 4.100 > > libpostproc 55. 4.100 / 55. 4.100 > > Input #0, mpeg, from '0.VOB': > > Duration: 01:42:49.76, start: 0.023444, bitrate: 5473 kb/s > Stream #0:0[0x1e0]: Video: mpeg2video (Main), yuv420p(tv, > progressive), 720x480 [SAR 8:9 DAR 4:3], Closed Captions, 2$.83 fps, > 59.94 tbr, 90k tbn, 59.94 tbc > Stream #0:1[0x80]: Audio: ac3, 48000 Hz, 5.1(side), fltp, 384 kb/s > > Stream #0:2[0x82]: Audio: ac3, 48000 Hz, stereo, fltp, 192 kb/s > Stream #0:3[0x81]: Audio: ac3, 48000 Hz, stereo, fltp, 192 kb/s > Stream mapping: > Stream #0:0 -> #0:0 (mpeg2video (native) -> mpeg2video (native)) > Stream #0:1 -> #0:1 (copy) > Press [q] to stop, [?] for help > Output #0, matroska, to 'test3.mkv': > Metadata: > encoder : Lavf58.23.102 > Stream #0:0: Video: mpeg2video (Main) (mpg2 / 0x3267706D), yuv420p, > 720x480 [SAR 8:9 DAR 4:3], q=2-31, 5500 kb/s, 23.9 > 8 fps, 1k tbn, 23.98 tbc > Metadata: > encoder : Lavc58.41.101 mpeg2video > Side data: > cpb: bitrate max/min/avg: 0/0/5500000 buffer size: 0 vbv_delay: -1 > Stream #0:1: Audio: ac3 ([0] [0][0] / 0x2000), 48000 Hz, 5.1(side), > fltp, 384 kb/s > [mpeg @ 0x1616340] New subtitle stream 0:4 at pos:13842446 and > DTS:20.7662sits/s dup=0 drop=1 speed=38.3x > [mpeg @ 0x1616340] New subtitle stream 0:5 at pos:13850638 and DTS:20.7662s > [mpeg @ 0x1616340] New subtitle stream 0:6 at pos:13852686 and DTS:20.7662s > [mpeg @ 0x1616340] New subtitle stream 0:7 at pos:13854734 and DTS:20.7662s > [mpeg @ 0x1616340] New subtitle stream 0:8 at pos:13856782 and DTS:20.7662s > [mpeg @ 0x1616340] New subtitle stream 0:9 at pos:13858830 and DTS:20.7662s > frame=147928 fps=880 q=2.0 Lsize= 4431149kB time=01:42:49.79
> bitrate=5883.5kbits/s dup=0 drop=200 speed=36.7x Contrary to what you claim below, this seems not to have worked: You dropped frames which is typically no intended. What is wrong with the file you have? Carl Eugen > video:4138930kB audio:289208kB subtitle:0kB other streams:0kB global > headers:0kB muxing overhead: 0.068010% > > And that seems to work. > > My questions: > > Is there a way to de telecine without reencoding ? When you stream-copy with FFmpeg, soft-telecine gets lost because FFmpeg doesn't support it. > If I have to reencode, does Stream #0:0 -> #0:0 (mpeg2video (native) -> > mpeg2video (native)) actually reencode. Or does it just copy the frame > content ? It is definitely re-encoded and because of the nature of mpeg2video, this cannot be lossless. > Is there a better way to archive this VOB ? zip comes to mind... Carl Eugen _______________________________________________ ffmpeg-user mailing list [email protected] http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email [email protected] with subject "unsubscribe".
