Andrew, your copy of prores_4444xq.pro is correct.

I think Andrea is the expert on this and maybe knows the history as he split up the prores formats which were checked into GIT on December 11, 2020.

On Sun, Mar 22, 2026 at 1:01 PM Andrew Randrianasulu <randrianasulu@gmail.com> wrote:

For now it reads, if my copy is correct:

cat bin/ffmpeg/video/prores_4444xq.pro
mov prores_ks
# ProRes, encoder prores_ks. Container Apple QuickTime movie (.mov).
#Support for alpha channel
profile=5
quant_mat=auto
cin_pix_fmt=yuv444p10le #also gbrp10le
# The possible video profile values for the ProRes codec are:
# 5 = 4444xq
# 4 = 4444
# 3 = HQ (high quality)
# 2 = Standard
# 1 = LT (light)
# 0 = Proxy

=====

but shouldn't line
cin_pix_fmt=yuv444p10le

reads like in
prores_4444.pro

cat bin/ffmpeg/video/prores_4444.pro
mov prores_ks
# ProRes, encoder prores_ks. Container Apple QuickTime movie (.mov).
# Support for aplpha channel
profile=4
quant_mat=auto
cin_pix_fmt=yuva444p10le #also gbrp10le
# The possible video profile values for the ProRes codec are:
# 5 = 4444xq
# 4 = 4444
# 3 = HQ (high quality)
# 2 = Standard
# 1 = LT (light)
# 0 = Proxy