On 3/11/18, Gonzalo Garramuno <ggarr...@gmail.com> wrote:
>
>
> El 11/03/18 a las 08:40, Erik Dobberkau escribio:
>> See
>> https://video.stackexchange.com/questions/20555/what-are-the-differences-between-the-three-bundled-ffmpeg-prores-encoders
>> It's a bit outdated but still good for background info.
>
> Does anyone have any hints on saving the alpha channel?  I have tried
> encoding an exr with alpha channel into a mov file with the following
> command:
>
> $ ffmpeg -i bunny.%04d.exr -c:v prores_ks -profile:v 4444 -pix_fmt
> yuva444p10le bunny.mov
>
> and I get a mov file but without an alpha channel.  ffprobe reports:
>
> Stream #0:0(eng): Video: prores (ap4h / 0x68347061),
> yuva444p10le(progressive), 1280x720, 61876 kb/s, SAR 1:1 DAR 16:9, 25
> fps, 25 tbr, 12800 tbn, 12800 tbc (default)

What you use to play it?
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