How to concat VOB files with ffmpeg using stream mapping?

Question

I have 5 VOB files, I would like to concat them to a big mpegts file, and keeping only the video stream and the last (3rd) audio stream. Unfortunately the stream ordering is different in the VOBs:

    Input #0, mpeg, from 'VTS_01_1.VOB':
      Duration: 00:25:03.00, start: 0.280633, bitrate: 5715 kb/s
        Stream #0:0[0x1bf]: Data: dvd_nav_packet
        Stream #0:1[0x1e0]: Video: mpeg2video (Main), yuv420p(tv), 720x576 [SAR 64:45 DAR 16:9], max. 7500 kb/s, 25 fps, 25 tbr, 90k tbn, 50 tbc
        Stream #0:2[0x20]: Subtitle: dvd_subtitle
        Stream #0:3[0x80]: Audio: ac3, 48000 Hz, stereo, fltp, 192 kb/s
        Stream #0:4[0x81]: Audio: ac3, 48000 Hz, stereo, fltp, 192 kb/s
        Stream #0:5[0x82]: Audio: ac3, 48000 Hz, stereo, fltp, 192 kb/s
    [mpeg2video @ 0x82d3600] Invalid frame dimensions 0x0.
        Last message repeated 5 times

Input #1, mpeg, from 'VTS_01_2.VOB':
      Duration: 00:24:51.03, start: 1503.128633, bitrate: 5761 kb/s
        Stream #1:0[0x1e0]: Video: mpeg2video (Main), yuv420p(tv), 720x576 [SAR 64:45 DAR 16:9], max. 7500 kb/s, 25 fps, 25 tbr, 90k tbn, 50 tbc
        Stream #1:1[0x21]: Subtitle: dvd_subtitle
        Stream #1:2[0x80]: Audio: ac3, 48000 Hz, stereo, fltp, 192 kb/s
        Stream #1:3[0x81]: Audio: ac3, 48000 Hz, stereo, fltp, 192 kb/s
        Stream #1:4[0x82]: Audio: ac3, 48000 Hz, stereo, fltp, 192 kb/s
        Stream #1:5[0x1bf]: Data: dvd_nav_packet
        Stream #1:6[0x20]: Subtitle: dvd_subtitle
    [mpeg2video @ 0x86aff00] Invalid frame dimensions 0x0.
        Last message repeated 8 times

Input #2, mpeg, from 'VTS_01_3.VOB':
      Duration: 00:24:17.94, start: 2993.976633, bitrate: 5891 kb/s
        Stream #2:0[0x1e0]: Video: mpeg2video (Main), yuv420p(tv), 720x576 [SAR 64:45 DAR 16:9], max. 7500 kb/s, 25 fps, 25 tbr, 90k tbn, 50 tbc
        Stream #2:1[0x80]: Audio: ac3, 48000 Hz, stereo, fltp, 192 kb/s
        Stream #2:2[0x81]: Audio: ac3, 48000 Hz, stereo, fltp, 192 kb/s
        Stream #2:3[0x82]: Audio: ac3, 48000 Hz, stereo, fltp, 192 kb/s
        Stream #2:4[0x1bf]: Data: dvd_nav_packet
        Stream #2:5[0x20]: Subtitle: dvd_subtitle
        Stream #2:6[0x21]: Subtitle: dvd_subtitle
    [mpeg2video @ 0x868fc20] Invalid frame dimensions 0x0.
        Last message repeated 8 times

Input #3, mpeg, from 'VTS_01_4.VOB':
      Duration: 00:24:38.52, start: 4451.800633, bitrate: 5809 kb/s
        Stream #3:0[0x1e0]: Video: mpeg2video (Main), yuv420p(tv), 720x576 [SAR 64:45 DAR 16:9], max. 7500 kb/s, 25 fps, 25 tbr, 90k tbn, 50 tbc
        Stream #3:1[0x80]: Audio: ac3, 48000 Hz, stereo, fltp, 192 kb/s
        Stream #3:2[0x81]: Audio: ac3, 48000 Hz, stereo, fltp, 192 kb/s
        Stream #3:3[0x82]: Audio: ac3, 48000 Hz, stereo, fltp, 192 kb/s
        Stream #3:4[0x1bf]: Data: dvd_nav_packet
    [mpeg2video @ 0x83a4aa0] Invalid frame dimensions 0x0.
        Last message repeated 9 times

Input #4, mpeg, from 'VTS_01_5.VOB':
      Duration: 00:02:45.18, start: 5930.104633, bitrate: 5897 kb/s
        Stream #4:0[0x1e0]: Video: mpeg2video (Main), yuv420p(tv), 720x576 [SAR 64:45 DAR 16:9], max. 7500 kb/s, 25 fps, 25 tbr, 90k tbn, 50 tbc
        Stream #4:1[0x80]: Audio: ac3, 48000 Hz, stereo, fltp, 192 kb/s
        Stream #4:2[0x81]: Audio: ac3, 48000 Hz, stereo, fltp, 192 kb/s
        Stream #4:3[0x82]: Audio: ac3, 48000 Hz, stereo, fltp, 192 kb/s
        Stream #4:4[0x1bf]: Data: dvd_nav_packet

So I tried this command:

ffmpeg -y f concat -i list.txt -map 0:v -map 0:a:2 -map 1:v -map 1:a:2 -map 2:v -map 2:a:2 -map 3:v -map 3:a:2 -map 4:v -map 4:a:2 -c copy -f mpegts joined.mpeg

Where list.txt contains

file VTS_01_1.VOB
file VTS_01_2.VOB
file VTS_01_3.VOB
file VTS_01_4.VOB
file VTS_01_5.VOB

Unfortunately doesn't work, complete output:

ffmpeg -y -f concat -i list.txt -map 0:v -map 0:a:2 -map 1:v -map 1:a:2 -map 2:v -map 2:a:2 -map 3:v -map 3:a:2 -map 4:v -map 4:a:2 -c copy -f mpegts joined.mpeg
ffmpeg version 2.3.1 Copyright (c) 2000-2014 the FFmpeg developers
  built on Jul 31 2014 14:53:16 with gcc 4.9.1 (GCC)
  configuration: --prefix=/usr --disable-debug --disable-static --enable-avisynth --enable-avresample --enable-decoder=atrac3 --enable-decoder=atrac3p --enable-dxva2 --enable-fontconfig --enable-gnutls --enable-gpl --enable-libass --enable-libbluray --enable-libfreetype --enable-libgsm --enable-libmodplug --enable-libmp3lame --enable-libopencore_amrnb --enable-libopencore_amrwb --enable-libopenjpeg --enable-libopus --enable-libpulse --enable-librtmp --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libv4l2 --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libx265 --enable-libxvid --enable-pic --enable-postproc --enable-runtime-cpudetect --enable-shared --enable-swresample --enable-vdpau --enable-version3 --enable-x11grab
  libavutil      52. 92.100 / 52. 92.100
  libavcodec     55. 69.100 / 55. 69.100
  libavformat    55. 48.100 / 55. 48.100
  libavdevice    55. 13.102 / 55. 13.102
  libavfilter     4. 11.100 /  4. 11.100
  libavresample   1.  3.  0 /  1.  3.  0
  libswscale      2.  6.100 /  2.  6.100
  libswresample   0. 19.100 /  0. 19.100
  libpostproc    52.  3.100 / 52.  3.100
[concat @ 0x893b1c0] Estimating duration from bitrate, this may be inaccurate
Input #0, concat, from 'list.txt':
  Duration: 00:00:00.00, start: 0.000000, bitrate: 573 kb/s
    Stream #0:0: Data: dvd_nav_packet
    Stream #0:1: Video: mpeg2video (Main), yuv420p(tv), 720x576 [SAR 64:45 DAR 16:9], max. 7500 kb/s, 25 fps, 25 tbr, 90k tbn, 50 tbc
    Stream #0:2: Subtitle: dvd_subtitle
    Stream #0:3: Audio: ac3, 48000 Hz, stereo, fltp, 192 kb/s
    Stream #0:4: Audio: ac3, 48000 Hz, stereo, fltp, 192 kb/s
    Stream #0:5: Audio: ac3, 48000 Hz, stereo, fltp, 192 kb/s
Invalid input file index: 1.

How can I achieve the concatenation with stream mapping applied?

Solution

You can use the cat command from the shell to concatenate the .vob files into one.

Here is an example:

To concatenate file1.vob, file2.vob and file3.vob from within the same directory into Allfiles.vob you can use the following command:

cat file*.vob > Allfiles.vob

Comments

[Elisa Cha Cha]

Can you be more specific than "doesn't work"? What does the ffmpeg console output show?

[Konstantin]

The error message: Invalid input file index: 1

[Elisa Cha Cha]

Please provide the complete ffmpeg console output.

[Konstantin]

Okay, I added it.

[Sun]

Is there a way for you to break down the steps? First step is to copy only the stream you want to another VOB? Then convert those single VOBs to your eventual output format?

[Thomas G Henry]

Ha! Great. Dead simple.