Is it possible to modify/edit the Maximum Content Light Level and Maximum Frame-Average Light Level values directly in a HEVC stream?
When encoding with x265, these values are set by the max-cll command line option.
FFmpeg has the hevc_metadata bitstream filter that can edit some of the static metadata present in a HEVC stream, but it doesn't seem to have/expose the capability to modify the aforementioned items.
I'm also aware that it's possible to override these value when muxing the HEVC stream in a mkv container, but I'd rather modify them in the elementary stream directly!
Thanks in advance for your help.
