[Ffmpeg-devel] [PATCH] Indeo 2 decoder

Michael Niedermayer michaelni
Thu Jun 23 08:43:10 CEST 2005


On Thursday 23 June 2005 04:49, Kostya wrote:
> Here is the patch suggested by unkaggregate(@users.sf.net).
> Main reason is: deltas in interframes need scaling by 3/4 before applying.
> Detailed description is at:
> http://sourceforge.net/tracker/index.php?func=detail&aid=1222099&group_id=1
>6082&atid=116082 He also mentioned some samples at:
> http://www.nerdgrounds.com/indeo21_test/

i still see some ghosting artefacts in fish05.avi with this patch and frame 
stepping with 's' in ffplay allthough i didnt try it with the dll

could maybe the 3/4 actually be a variable and stored in the header? iam just 
guessng though, also i dont belive that (x*3)>>2 is correct as its rounding 
is asymmetric between the positive and negative numbers


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