[Libav-user] Difficulty decoding libvpx VP8 with Alpha as RGBA

[Carl Eugen Hoyos]

> Am 01.02.2021 um 00:08 schrieb Craig Turner <turner.craig at gmail.com>:
> 
> You are absolutely right - the format is AV_PIX_FMT_YUV420P, so it seems the alpha channel is not being decoded. Is there something specific I need to do to ensure it does indeed get decoded?

It may be necessary to configure with --disable-decoder=vp8

Carl Eugen