[Ffmpeg-devel] ffmpeg & postprocess_internal.h (colorspace issue)

Martin Boehme boehme
Mon Jul 25 11:06:35 CEST 2005

Marcus Engene wrote:
> Martin Boehme wrote:
>> Kris A. Wotipka wrote:
>>>> AFAIK this means yuv420p colorspace, but with the standard luma 
>>>> range (16-234). 
>>> To be honest, this line really helped me because it put me on the 
>>> track of YUV.
>> Actually, (almost) all digital video codecs use the YUV colour space. 
>> Reason being that it decorrelates the RGB components, and you can 
>> reduce the bandwidth for the U and V components because the human 
>> visual system isn't as sensitive to colour changes as it is to 
>> luminance changes. 
> An utterly silly question, would it solve Kris's problem by doing a 
> vhook squeezing 0-255 into 16-234 or am I on snus again?

I guess so... but it would require programming.


Martin B?hme
Inst. f. Neuro- and Bioinformatics
Ratzeburger Allee 160, D-23538 Luebeck
Phone: +49 451 500 5514
Fax:   +49 451 500 5502
boehme at inb.uni-luebeck.de

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