[FFmpeg-user] Prores 444 being detected by quicktime as 422?

[Carl Eugen Hoyos]

Robert Krüger <krueger <at> lesspain.de> writes:

> > The encoder currently does not support alpha...
> >
> >> I verified by making a clip with alpha
> >
> > ... which is related to the fact that the decoder does not
> > support it because afaik we don't have a sample.
> >
> > Please provide a sample, Carl Eugen
>
> The sample I have is one frame long and 220k in size. 
> How do you want me to give it to you?

If you don't want to send it to this list (or via pm) 
and don't want to open a ticket yourself (I will do it),
please upload as explained on http://ffmpeg.org/bugreports.html

Please also add the sample as rgba png, so the developers 
know what it should look like.

Thank you, Carl Eugen