[Libav-user] Decoding videos with transparency

[Carl Eugen Hoyos]

Am Di., 29. Sept. 2020 um 16:48 Uhr schrieb Olivier Girondel
<olivier at biniou.info>:

> Is there a list of video codec that handle transparency ?

No.
(You can grep for specific pix_fmts though.)

> I'd like to *decode* videos to RGBA or gray8, I tried with .webm but
> this doesn't seem to work ?

While this is not enough information, my guess is that it will work
if you don't use the internal decoder: libvpx supports transparency
decoding.

Carl Eugen