[HELP] Add MKV Metadata Crop and Aspect Ratio

[Analog]

Hi Selur,

Would it be possible to add MKV metadata/signaling support for crop and display AR?

I have some files with odd aspect ratios (non-1:1 PAR) and overscan that I want to preserve in the original full resolution, 4:3/16:9 capture form but I'd like to store the crop information and set the display aspect ratio for the player to interpret.

I think for the MKV DAR settings, the DisplayUnit parameter needs to be set to 3 & the DisplayWidth & DisplayHeight parameters take the aspect ratio.

Also, on a side note, the MKV transfer characteristic value of "4" seems to correspond to BT.470 System M...which would also be great to note!

Thanks!