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mailo homolas
mpg format doesnt support
on Nov 26, 2009 at 6:33:33 pm

Hi i tried open file.mpg in AE cs4 but "86::1 may unsupported format"
where is pls the problem?
i think a few days ago, it works fine.


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Dave LaRonde
Re: mpg format doesnt support
on Nov 27, 2009 at 5:08:36 pm

[mailo homolas] "i think a few days ago, it works fine."

If that is so, you got lucky. Don't count on remaining lucky.


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[mailo homolas] "where is pls the problem? "

You're using mpeg footage:

Dave's Stock Answer #1:

If the footage you imported into AE is any kind of the following -- footage in an HDV acquisition codec, MPEG1, MPEG2, mp4, m2t, H.261 or H.264 -- you need to convert it to a different codec.

These kinds of footage use temporal, or interframe compression. They have keyframes at regular intervals, containing complete frame information. However, the frames in between do NOT have complete information. Interframe codecs toss out duplicated information.

In order to maintain peak rendering efficiency, AE needs complete information for each and every frame. But because these kinds of footage contain only partial information, AE freaks out, resulting in a wide variety of problems.


Dave LaRonde
Sr. Promotion Producer
KCRG-TV (ABC) Cedar Rapids, IA


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