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- 2015-02-01-use-libav
- Title ffmpeg/libav conflict management:
- USE=libav
- Author Michał Górny <mgorny@gentoo.org>
- Posted 2015-02-01
- Revision 2
-
- The support for automatic choice between ffmpeg and libav is going to be
- deprecated in favor of explicit choice via USE flags. This change aims
- to solve multiple repeating issues, including Portage undesirably
- wanting to replace one package with the other, lack of proper reverse
- dependency on ffmpeg/libav upgrades and some of the hard-to-understand
- upgrade failures involving blockers. It also may be used to make ffmpeg
- and libav co-installable in the future.
-
- The current USE=ffmpeg will maintain its role of enabling optional
- support for ffmpeg or a compatible implementation (libav) in a package.
- However, whenever appropriate additional USE=libav will be introduced to
- control the preference of one implementation over the other.
-
- Users who currently use libav need to enable USE=libav in
- /etc/portage/make.conf. It should be noted that users still need to
- enable USE=ffmpeg on packages with optional libav support as well.
- Users who currently use ffmpeg need to take no action.
-
- Please also note that some packages support only one of the two
- implementations. An attempt to install one of those packages may result
- in blockers requiring the user changes the global USE=libav state.
-
- Please do not alter the state of 'libav' flag on a per-package basis
- (e.g. via package.use). The flag needs to be set globally to have
- consistent value throughout all packages. Otherwise, blockers will
- prevent upgrades.
-
- 2015-04-16-ffmpeg-default
- Title FFmpeg default
- Author Ben de Groot <yngwin@gentoo.org>
- Posted 2015-04-16
- Revision 1
-
- Since the choice between ffmpeg and libav has been made more
- explicit, there has been a lot of discussion about what the
- default implementation should be. It can be concluded that
- media-video/ffmpeg has wider support, and would be somewhat
- more convenient for most end-users.
-
- For this reason the default implementation has been switched
- back from media-video/libav to media-video/ffmpeg by removing
- the libav useflag from the base profile.
-
- If the libav useflag is already globally enabled or disabled
- in /etc/portage/make.conf, then no further action is required.
-
- Users who implicitly relied on libav being enabled in their
- profile, and who wish to continue using libav, should enable
- USE=libav in their /etc/portage/make.conf file.
-