What program will convert a MPEG2 video to MPEG4 retaining a playback aspect ratio?

Discussion in 'Amateur Video Production' started by Dima, Jan 19, 2005.

  1. Dima

    Dima Guest

    What program will convert mpeg2 or (ATI *.VCR) video to mpeg4 retaining
    a playback aspect ratio? Dr.Divx and ATI MMC change a mpeg2 file
    playback aspect ratio to video resolution aspect ratio when converting
    to mpeg4. For example, Dr.Divx and ATI MMC change a 4x3 playback aspect
    ratio of a 480X576 resolution video to a 480X576 playback aspect ratio.
    What program allows to edit a mpeg2 or (ATI *.VCR) video retaining a
    playback aspect ratio?
     
    Dima, Jan 19, 2005
    #1
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  2. Linux transcode
    from man transcode;
    --export_asr C
    set export aspect ratio code C [as input]

    Valid codes for C are:
    1 1:1
    2 4:3
    3 16:9
    4 2.21:1
    Linux ffmpeg
    -aspect aspect
    set aspect ratio (4:3, 16:9 or 1.3333, 1.7777)
     
    Jan Panteltje, Jan 19, 2005
    #2
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  3. Dima

    Dima Guest

    Thanks for your reply.
    Will Linux transcode retain, not change video resolution in pixels?
    Will it work in windows?
     
    Dima, Jan 19, 2005
    #3
  4. Dima

    Dima Guest

    Dima, Jan 19, 2005
    #4
  5. If the source code for transcode is availible then you may be able to
    install Cygwin (UNIX for Windows) and compile transcode under Cygwin.

    Cygwin is free from: http://www.cygwin.com/

    I have Cygwin installed at home and work.

    Later,
    Steven
     
    Steven Whatley, Jan 19, 2005
    #5
  6. Dima

    Dima Guest

    Is the source code for transcode available?
    How to compile transcode under Cygwin?
     
    Dima, Jan 19, 2005
    #6
  7. Dima

    theyak Guest


    While we're waxing philosophical, all that has to happen for linux to
    explode in popularity is for game developers to start using opengl or
    the like...
     
    theyak, Jan 19, 2005
    #7
  8. True enough, but the fact remains that, in the hands of a skiled user,
    Linux is far more powerful than Windows.
     
    relaxification, Jan 19, 2005
    #8
  9. Dima

    Lenroc Guest

    Bah.

    In the hands of a sufficiently skilled user, the operating system is
    irrelevant.
     
    Lenroc, Jan 19, 2005
    #9
  10. Dima

    Ken Maltby Guest

    True also; but the fact remains that, in the hands of a skilled
    programmer
    any assembly language is far more powerful than Windows, Linux, or any
    higher level language.

    Luck;
    Ken
     
    Ken Maltby, Jan 19, 2005
    #10
  11. ehh, if you go to the same format.
    Nope
     
    Jan Panteltje, Jan 19, 2005
    #11
  12. Well, the few windows fanatics left wil have to go Unux one day too.
    You have no clue, *I* use a PC to solve a problem.
    Linux has the solution to this specific problem.
    If you want to have a relationship wint MS soft, more then a solution to
    a technical problem, why not go for a job at MS.
     
    Jan Panteltje, Jan 19, 2005
    #12
  13. Possibly, but much easier to install Linux in a partition and use the other
    million or so free programs too.
     
    Jan Panteltje, Jan 19, 2005
    #13
  14. Linux is no language.
    It is an operating systenm, partly written in C and guess what, partly in
    assembler.
    So you get a clue.
     
    Jan Panteltje, Jan 19, 2005
    #14
  15. Dima

    Steve K. Guest

    Quicktime.
     
    Steve K., Jan 19, 2005
    #15
  16. Dima

    FLY135 Guest

    Funny thing. I am building a streaming MPEG-4 encoder at work and Quicktime
    doesn't obey the pixel aspect value when RTP/RTSP streaming. OTOH Videolan
    Client does. I know that's not relevant to this discussion but it struck me
    as funny if it handles it properly in file conversions.
     
    FLY135, Jan 20, 2005
    #16
  17.  
    relaxification, Jan 20, 2005
    #17
  18. Dima

    Dima Guest

    Will Linux transcode retain, not change video resolution in pixels "if
    I go" from MPEG2 to MPEG4?
     
    Dima, Jan 20, 2005
    #18
  19. Dima

    Dima Guest

    Will TMPGEnc Encoders 2.5 & 3.0 retain, not change playback aspect
    ratio (for example 4x3) and video resolution (for example 480x576) when
    converting MPEG2 to MPEG4?
    Dr.Divx 1.0.6 can retain playback aspect ratio (for example 4x3), but
    changes video resolution, for example, 480x576 to 480x352(=4x3 playback
    aspect ratio). ATI MMC retains video resolution but changes playback
    aspect ratio from 4x3 to 480x576=5x6.
     
    Dima, Jan 20, 2005
    #19
  20. Dima

    Dima Guest

    What windows program will retain, not change playback aspect ratio (for
    example 4x3) and video resolution (for example 480x576) when converting
    MPEG2 to MPEG4?
    Dr.Divx 1.0.6 can retain playback aspect ratio (for example 4x3), but
    changes video resolution, for example, 480x576 to 480x352(=4x3 playback
    aspect ratio). ATI MMC retains video resolution but changes playback
    aspect ratio from 4x3 to 480x576=5x6.
     
    Dima, Jan 20, 2005
    #20
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