Prores 4444

I export an After Effects composition to prores 4444 with alpha channel but I get always prores-hq 422 without alpha.

I do not understand what I'm doing wrong.

Regards,

Lluís

May be this helps.

I can export an uncompresed video from after effects with 16bit RGBA and then I encode it to prores 4444XQ with the ffmpeg command:

ffmpeg -y -i %1 -vcodec prores_ks -pix_fmt yuva444p10le -profile:v 4444xq -acodec pcm_s16le %1_prores.mov

to get a right prores 4444xq

Regards,

Lluís

Poo,

Read my first post.

Regards,

Lluís

Thanks a lot,