2016-04-17 19:12 GMT+03:00 »Q« <boxc...@gmx.net>: > On Sun, 17 Apr 2016 11:47:19 +0300 > gevisz <gev...@gmail.com> wrote: > >> "VLC could not decode the format "Opus" (Opus Audio)" >> >> I have tried to add the opus use flag to media-video/ffmpeg >> and to add the matroska use flag to media-video/vlc >> >> No results. >> >> Any suggestions? >> >> I just have read that opus is an open sourse audio format >> that is much better that mp3. >> >> Why it is not supported by default then? > > Adding 'media-video/vlc -opus' > to /etc/portage/profile/package.use.stable.mask will override, to let > you use the flag with VLC. (The '-' is not a typo. It's there > because '-opus' removes opus from the masked flags.) > > I tried to figure out the other day why opus is stable-masked for VLC > and wound up in a maze of bugs. I'm sorry I don't have the bug numbers > for them. If you want to dive into the maze, grep around > in /usr/portage/profiles for vlc and opus. > > I'm pretty sure what happened was that vlc had a security issue, and a > new version had to be stabilized, some time in 2014 or early 2015. At > that point, for opus support the new stable VLC required an unstable > opus, so they stable-masked the flag for VLC. Later, a new-enough opus > was stabilized; at that point, the flag for VLC should have been > unmasked, but it fell through the cracks. There was already whining in > bug comments about it not getting done, so I didn't add my voice.
Thank you both for the help. After creating /etc/portage/profile/package.use.stable.mask with the line media-video/vlc -opus I finally could see the opus use flag via equery uses vlc Setting this flag and recompiling vlc solved the problem.
