Can xvidcap write to DVD-compatible formats

  • d-zollinger

    d-zollinger - 2007-11-28

    Greetings and salutations.

    Xvidcap is a lovely little application that seems to do exactly what is asked of it. The creators should be proud, it is immensely useful!

    I have a question though. I would like to create video's from xvidcap that are natively ready to add to a DVD project, but I don't seem to be able to create any files that, for example, such tools as Q DVD-Author or DVD Styler think are acceptable. Could someone in the know suggest what I am doing wrong?

    Here's what I know about the requirements for DVD video:
    * Two major formats, PAL and NTSC.
    * PAL needs either MPEG-1 or MPEG-2 videos, at 25 fps, using the following possible resolutions:
        [720x576, 704x576, 352x576, 352x288]
    * NTSC needs either MPEG-1 or MPEG2 videos, at either 29.97 fps or 23.976 fps, using the following possible resolutions:
        [720x480, 704x480, 352x480, 352x240]

    Xvidcap does seem to create videos matching these specs, but the videos fail to satisfy dvdauthor's GUIs. Any help with what I might be doing wrong would be gratefully appreciated.

    Many thanks in advance!

    Daniel Zollinger

    • Karl H. Beckers

      Karl H. Beckers - 2007-11-28

      Hmm, would have thought that .m2v extension should do the job.

      $ ./xvidcap --file /tmp/test.m2v --mf --auto --fps 25 --cap_geometry 720x576 --source shm
      $ file /tmp/test.m2v /tmp/test.m2v: MPEG sequence, v2, program multiplex

      on a DVD here:

      file /media/cdrom/video_ts/vts_01_1.vob
      /media/cdrom/video_ts/vts_01_1.vob: MPEG sequence, v2, program multiplex

      Nonetheless my dvdauthor also hickups on the captured file.
      Comparing the mplayer output of the captured file and one DVD I have here, I only see a difference in aspcect (though 4:3 video should cause dvdauthor to crash), bitrate (which is not set of the captured video), and the audio codec (which also should not be decisive).

      kb87850@ono-sendai:~$ diff -Naurw /tmp/shaun.txt /tmp/mine.txt
      --- /tmp/shaun.txt      2007-11-28 15:28:47.000000000 +0100
      +++ /tmp/mine.txt       2007-11-28 15:28:03.000000000 +0100
      @@ -3,9 +3,9 @@
      CPUflags:  MMX: 1 MMX2: 1 3DNow: 0 3DNow2: 0 SSE: 1 SSE2: 1
      Compiled with runtime CPU detection.

      -Playing /media/cdrom/video_ts/vts_01_1.vob.
      +Playing /tmp/test.m2v.
      MPEG-PS file format detected.
      -VIDEO:  MPEG2  720x576  (aspect 3)  25.000 fps  9000.0 kbps (1125.0 kbyte/s)
      +VIDEO:  MPEG2  720x576  (aspect 1)  25.000 fps    0.0 kbps ( 0.0 kbyte/s)
      Opening video decoder: [mpegpes] MPEG 1/2 Video passthrough
      VDec: vo config request - 720 x 576 (preferred colorspace: Mpeg PES)
      @@ -17,14 +17,14 @@
      Forced audio codec: mad
      -Opening audio decoder: [liba52] AC3 decoding with liba52
      -AUDIO: 48000 Hz, 2 ch, s16le, 448.0 kbit/29.17% (ratio: 56000->192000)
      -Selected audio codec: [a52] afm: liba52 (AC3-liba52)
      +Opening audio decoder: [libmad] libmad mpeg audio decoder
      +AUDIO: 44100 Hz, 2 ch, s16le, 64.0 kbit/4.54% (ratio: 8000->176400)
      +Selected audio codec: [mad] afm: libmad (libMAD MPEG layer 1-2-3)
      AO: [alsa] 48000Hz 2ch s16le (2 bytes per sample)
      Starting playback...
      VDec: vo config request - 720 x 576 (preferred colorspace: Planar YV12)
      VDec: using Planar YV12 as output csp (no 0)
      -Movie-Aspect is 1.78:1 - prescaling to correct movie aspect.
      -VO: [xv] 720x576 => 1024x576 Planar YV12
      +Movie-Aspect is 1.25:1 - prescaling to correct movie aspect.
      +VO: [xv] 720x576 => 720x576 Planar YV12
      Exiting... (Quit)

      Judging by the error messages I'm seeing in dvdauthor, I may not be putting all the stuff in the m2v file I should (navigation packets?!?). I need to research this some more. Meanwhile I'd recommend transcoding. Take a look at this page:



    • Karl H. Beckers

      Karl H. Beckers - 2007-11-30

      Nope, not possible at this time. m2v is svcd format. Should be easy to add DVD format, too, though.

    • Karl H. Beckers

      Karl H. Beckers - 2007-11-30

      Should be possible with current svn.
      Remember to make sure you have correct settings, though: PAL or NTSC size, right fps and audio rate of 48000.
      dvdauthor swallows those for me, now.

      • d-zollinger

        d-zollinger - 2007-12-05

        Hi Karl

        Thanks heaps for the response! I'll grab the latest svn copy and give it a try soon.

        Kind regards,

        Daniel Zollinger


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