How to avoid blockiness when encoding AVI to MPEG

Discussion in 'MPEG-1 and MPEG-2 encoding (AVI to DVD)' started by Mercator, Jul 24, 2004.

  1. Mercator

    Mercator Member

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    Hi all!
    I am having mixed succes in encoding AVI's into MPEG's using Virtualdub and TMPGenc.
    A thing is that often blockiness appears in large dark surfaces (e.g. character wearing a dark cape)
    or in misty situations (e.g. the beginning of the movie Master and Commander where they navigate in mist). The remainder of the movie is usualy OK.
    What setting in VirtualDub and/or TMPGenc could avoid or at least minimize this blockiness?
    Every input would be highly appreciated!
     
  2. shiroh

    shiroh Guest

    i see...
    try in virtualdub scrolling to the mention scene and take a look at the still shots, and also see it in motion, if its blocky it wont go away. what you can do is softenit to make the blocks less (i said less) noticable. but it will be smooth. i say..... get the dvd ? :)

    if the source is good than you might wanna add a little more bitrate. constant bitrate will result in blocks too.


    _X_X_X_X_X_[small]Codec packs are evil[/small]
     
    Last edited by a moderator: Jul 24, 2004
  3. Mercator

    Mercator Member

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    Hmmm... no real solution to this then.
    Thanks shiroh
     
  4. shiroh

    shiroh Guest

    crap in crap out.
    theres little you can do about it
     
  5. Minion

    Minion Senior member

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    You might be able to Get rid of some of the Blockyness if it doesn"t appear in the Source File by useing a Higher Bitrate to Encode....
    Macro-Blocks are usually caused from either a Low Quality source File ,From Resizeing a low resolution file to a High resolution file will also Cause Blocks,
    Low Quality Mpeg encodeing ,Or to low of a Bitrate when encodeing to Mpeg....

    If you raise the Bitrate to about 1500KBS for VCD encodeing you should be able to get rid of a Lot of the Blocks if they are caused from a Lack of Bitrate and still be able to get 60 minutes on a CD-R...

    Cheers
     
  6. shiroh

    shiroh Guest

    i recently rip the movie of xenosaga, if you didn't know its jaggies, when resizing to a bigger res, you'll be enhancing the jaggies too. same with blocks.
     
  7. Caspa1786

    Caspa1786 Member

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    I dunno, I have made some decent backups direct from DVD-AVI, then later made them into VCDs, and no matter what I always see those blocks in black parts, hell I average encode VCDs to 2 Discs(somtimes 3), Average of 45 mins a Disc, and average bitrate being 1800-2000, audio is usually 128, only go higher if the source was higher, never go lower then source for Audio tho, like say I have a Video that som1 encoded 2 119, well I just use 128, or even 168, I just use w/e is next, like 192, I'v noticed tho that somtimes no matter what I do I always get those Blocks in the Black area, Truthfully I don't know if there is anything you can do about that
     

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