[FFmpeg-devel] [RFC] Exporting the alpha mode from decoders

Carl Eugen Hoyos cehoyos at ag.or.at
Fri Feb 6 13:06:45 CET 2015

wm4 <nfxjfg <at> googlemail.com> writes:

> It's not consistently done,

I worked (hard) on doing it consistently, 
please point me to the missing codecs.

A possible reason for missing Camtasia is 
that I did not find a 32 bit sample (so I 
could not decide if alpha is hidden in the 
encoded image or not).

> doesn't account for the garbage case (RGB0
> means the alpha component is always 0, right?)

No, I believe it means that you must ignore 
the alpha component. I always thought that 
this is never a disadvantage, am I missing 

Carl Eugen

More information about the ffmpeg-devel mailing list