[FFmpeg-devel] libavcodec/hapenc : add support for hap alpha only encoding

[Martin Vignali]

>
> Same question as before:
> How can 24bit input be encoded into alpha?
>
>
>
> For now, the texturedspenc, only support rgba as input.
This encoder, use the alpha part of the rgba input and ignore the rgb part.

But maybe it's more convenient, to use Gray8 as input for HapAlphaOnly
and not support, other input channel.

i will post a new patch

Martin