[FFmpeg-user] RGB-YUV color shift

[George L.P. Fitz]

On Oct 19, 2012, at 9:58 AM, Carl Eugen Hoyos wrote:

> George L. P. Fitz <george <at> glpf.net> writes:
> 
>> BEFORE:
>> #define SWS_CS_ITU709         1
>> #define SWS_CS_FCC            4
>> #define SWS_CS_ITU601         5
>> #define SWS_CS_ITU624         5
>> #define SWS_CS_SMPTE170M      5
>> #define SWS_CS_SMPTE240M      7
>> #define SWS_CS_DEFAULT        5
>> 
>> AFTER:
>> #define SWS_CS_ITU709         1
>> #define SWS_CS_FCC            4
>> #define SWS_CS_ITU601         5
>> #define SWS_CS_ITU624         5
>> #define SWS_CS_SMPTE170M      5
>> #define SWS_CS_SMPTE240M      7
>> #define SWS_CS_DEFAULT        1
> 
> Is your original problem only reproducible when encoding 
> to prores or also if you encode with a yuv420p encoder?
> (For example -vcodec mpeg4 -qscale 2)

I had previously seen the same color shift when encoding to v210 and x264.  I haven't tried mpeg4 yet.  I'll try that Monday and report back.

> 
> I wonder if the reason that changing the default has no 
> effect is that it does not work for a 10bit colourspace.
> 
> Carl Eugen
> 
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