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  1. Member
    Join Date
    Dec 2006
    Location
    Norway
    Search Comp PM
    Hello!

    I am trying to increase my knowledge about x264. On some x264 files I find information about format settings GOP in Mediainfo,
    for example: Format settings, GOP : M=1, N=56

    I understand the principle of GOP as described here: http://www.webopedia.com/TERM/G/GOP.html ,
    and also how to set the GOP size in an x264 file.

    What is this format setting and why doesn't it show on all x264 files?

    Any reply greatly appreciated
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  2. in x264 you use -b or --bframes to specify the number of consecutive b-frames, -I or --keyint to indicate the maximum GOP size.

    Other programs you use M and N where M is the size of BP groups and N is the number of BP groups and I frames per GOP.

    M=1, N=5 --> I P P P P - I P P P P
    M=2, N=5 --> I BP BP BP BP - I BP BP BP BP
    M=3, N=3 --> I BBP BBP - I BBP BBP
    Last edited by jagabo; 8th May 2011 at 09:45.
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  3. I use Format Factory to convert my Video Files to other files.
    Now I no all Retail DVDs are Interlace because they are for NTSC USA TVs.
    This is what I did I Decrypted my Buck Rogers DVDs and they are from the 1970's TV show.

    Then I use Format Factory to convert the VOB files to MP4 and put them on my media player that has a 5. inch screen and it works good.
    Now when I convert the VOB files to MP4 I have 2. option Interlace and De Interlace I set Interlace to OFF and I set De Interlace to OFF and they play great on my Media Player.

    My Media Player is the Mach Speed Trio 5000 and it has an LCD screen.
    And I right that LCD screen do not use Interlace and they do not use De Interlace?
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  4. Member
    Join Date
    Dec 2006
    Location
    Norway
    Search Comp PM
    jagabo: thank you very much for your reply. Much appeciated
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