[Ffmpeg-devel] PIX_FMT_RGB555 and alpha channel

Alex Beregszaszi alex
Tue Oct 31 02:23:04 CET 2006


> > I noticed that for rgb15 formats libswscale always sets the MSBit to
> > 0.   Which is not what FFMpeg does for this format.  With the MSBit
> > = 0,  FFMpeg would say that the pixel is fully transparent. They
> > would all  need to be or'd with 0x8000 to have the same format as
> > FFMpeg RGB555.    Is this a bug?  Should they be or'd with 0x8000 to
> > make the format == to  FFMpeg's version?
> no IMHO imgconvert is buggy, it should never set the "alpha" bit of
> rgb555

Do you accept a patch which just removes all the false alpha stuff from
RGB555? (As I asked since the beginning)

Alex Beregszaszi | alex at fsn.hu
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