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View Full Version : non-mod4 files showing "bad" color.


MKVCrazy
26th May 2009, 06:44
I recently found out that this bad color occurs only on non-mod4 (not divisible by 4) files. For example a video is encoded at 852x362 to maintain the 2.35 ratio and the width in even number so anamorphic is not necessary. However when I playback using Media Player Classic, I get this kind of pictures:

http://www.oxypics.com/img10/5438/52pic1.png

I'm using CoreAVC and CoreAAC. Desktop resolution is 1280x1024 as it sometimes might matter.



Thank you,
MKVCrazy

Audionut
26th May 2009, 06:56
Virtually every avisynth filter, desktop codec needs at a minimum mod4 resolution.

Did you try the search function!!

Sharktooth
26th May 2009, 14:05
... AT LEAST mod4. some filters require mod16...

MKVCrazy
27th May 2009, 02:48
oh ok. I just used VLC. :\

Audionut
27th May 2009, 02:50
For playback?

How did you create the file?

Blue_MiSfit
27th May 2009, 12:57
I'm a bit confused..

So, even if you feed x264 video that's not mod4 / mod8 or whatever, doesn't it pad internally?

In other words... shouldn't this kind of thing not occur?

I'm assuming the input video didn't look like this..

~MiSfit

nm
27th May 2009, 13:20
So, even if you feed x264 video that's not mod4 / mod8 or whatever, doesn't it pad internally?
Yes, but the problem is most likely caused by something else before the video is fed to (lib)x264. VLC's resize filter, for example