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holgerschlegel 09-11-2003 07:22 AM

KVCD: Colorspace issues

what is the best colorspace to use (for quallity) for processing and encoding a captured film or dvd rips to mpeg? Can colorspace conversions in avisynth script cause bad quallity in the output?


Dialhot 09-11-2003 07:39 AM

You loose something at each colorspace conversion. So the best is to avoid _all_ conversion and work in the colorspace provided by your codec.

Now if you can configure a codec to provide the colorspace you want, the best choice is YV12 (usable only with AVS2.5x) and secondly YUY2.

holgerschlegel 09-11-2003 07:50 AM

Thanks, and more questions...

I use the picvideo mjpeg codec to capture from tv. The capture settings in VirtualDub is set to YUY2, so the reading the avi file with AviSynths AVISource command results in a movie in YUY2 colorspace, right?
Is there any way to let avisynth display a clips current colorspace?
Is there any need to convert to YV12 if I want to encode the movie as mpeg-2 for cdr or dvd target? Maybe some of the filters used in the optimal script for avisynth 2.5.2.


incredible 09-11-2003 08:08 AM

I think these lines wil output you the data you need:


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