Feature Request: Encoding in YUV444p format

[JDAturbo]

Would you please consider supporting saving videos in YUV444p format?

Use case:
I have lots of YUV444p videos that I need to edit.
I need to save edited videos in a lossless format for further processing.

Currently, I see no possibility to keep the chroma resolution as is when encoding with Avidemux.
FFHUFFYUV, NVENC and x265 only support YUV420p. HUFFYUV only supports YUV422p.

[eumagga0x2a]

Eagerly awaited also for the use case of editing screencasts which look awful with reduced chroma resolution, amounts to an application rewrite or short thereof, so not a low hanging fruit.