Hi, This question belongs in ffmpeg-u...@ffmpeg.org mailing list. I have CC'd this mail to that mailing list, and please don't reply to ffmpeg-devel anymore.
On Thu, Aug 21, 2014 at 4:55 PM, Chuck Burfoot <ch...@burfoots.com> wrote: > I build with --enable-libvpx. I was keenly interested in the ability of > libvpx to create/encode "webm" with alpha. So you only want encoding with libvpx? The questions below are all about decoding. [...] > > So I dumped --codecs and low and behold > > DEV.L. vp8 On2 VP8 (decoders: vp8 libvpx ) (encoders: > libvpx ) > > DEV.L. vp9 Google VP9 (decoders: vp9 libvpx-vp9 ) > (encoders: libvpx-vp9 ) > > There's 2 DECODERS for vp8 and vp9 and the 'internal' one is used first ! > > Isn't that a build bug? No. The internal decoder is much faster than libvpx (See http://x264dev.multimedia.cx/archives/499), and not many people use alpha in VP8. That's why we made it default. If you really want to use libvpx to decode vp8, use something like: ffmpeg -c:v libvpx -i INPUT ... > Do I need to do a --disable-vp8, etc? If you want to force libvpx decoding at all times and disable the internal VP8 decoder, do --disable-decoder=vp8. Timothy _______________________________________________ ffmpeg-devel mailing list email@example.com http://ffmpeg.org/mailman/listinfo/ffmpeg-devel