Hi,
I'm trying to decode and convert a VP8 video with an alpha channel to a
32-bit RGBA for rendering in my application. The decoding with libvpx works
fine, but I can't get the alpha channel through into the RGBA. Am I
doing something wrong with libswscale?
Thanks in advance!
Craig
Here's the
Am So., 31. Jan. 2021 um 22:43 Uhr schrieb Craig Turner
:
> I'm trying to decode and convert a VP8 video with an alpha channel to a 32-bit
> RGBA for rendering in my application. The decoding with libvpx works fine, but
> I can't get the alpha channel through into the RGBA. Am I doing something
>
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?
The codec is indeed the "libvpx VP8" and the (presumably well-known) file I
am using is dancer1.webm, whic
Hello all,
I use libavfilter with the filter “atempo", to make a program which is able to
play and stretch the audio
And I would like to display the play position starting from the beginning to
the end of the file, even if the user change the tempo
For now I have the pts for input frames, a
El 31/1/21 a las 20:08, Craig Turner escribió:
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?
grep'ping thru the ffmpeg's libavcodec sources for vp*
