Please add "cqmfile" option for x265

[Former user]

Please add cqmfile option (Custom Quantization Matrix) for x265 and I want use this option on FFmpeg

[Former user]

I found same option as cqmfile on x265

It's "scaling-list" option on x265

but It seems compatibility issue with x264 Custom Quantization Matrix

(x265 [error]: can't read matrix from cqm.cfg)

What I need change for use x265 Custom Quantization Matrix?

(I attached my Custom Quantization Matrix for x264)

[Steve Borho]

HEVC custom matrices are going to be different than AVC's since HEVC has more transform sizes. Just as x264's CQM file format was taken from the JM, x265's scaling-list file format was copied from the HM. The best way to understand it is to read the C code: https://bitbucket.org/multicoreware/x265/src/tip/source/common/scalinglist.cpp?at=default#scalinglist.cpp-238