{"id":586,"date":"2012-05-14T10:03:40","date_gmt":"2012-05-14T09:03:40","guid":{"rendered":"http:\/\/blogs.gentoo.org\/scarabeus\/?p=586"},"modified":"2017-12-22T10:23:41","modified_gmt":"2017-12-22T09:23:41","slug":"media-videolibav-stable-on-most-important-archs","status":"publish","type":"post","link":"https:\/\/blogs.gentoo.org\/scarabeus\/2012\/05\/14\/media-videolibav-stable-on-most-important-archs\/","title":{"rendered":"media-video\/libav stable on most important archs"},"content":{"rendered":"

As summary says in Gentoo you can finally decide which implementation of libav you want, good old ffmpeg named flavor or the new and shiny libav one.<\/p>\n

14 months after I introduced it to main tree we finally got it stable almost everywhere (just ppc missing yet as usual :P). We did *censored* of work in order to support both implementations, introducing virtual package, proper (non-conditional) patches everywhere, etc. etc.<\/p>\n

So why should you switch your package?<\/h2>\n

Basically it does not matter for you. We can say it can be done as personal prefference.
\nWe can say that ffmpeg merges from libav tree and throws some experimental patches over it. Thats why my personal prefference is with libav folks as I don’t trust any idea of merging anything. Otoh the ffmpeg is the “orginal” (well most devs moved under libav) upstream thus they should get our trust for what they are doing.<\/p>\n

Today from the distro PoV there are some distributions using libav (Debian, Sabayon) and also ffmpeg (openSUSE [external repo called packman]).<\/p>\n

As we in Gentoo really are pro-choice just pick yourself and let us know how happy are you with such decision :-P<\/p>\n

So how can I switch?<\/h2>\n

Just edit \/etc\/portage\/package.use* to keep same useflag from media-video\/ffmpeg to media-video\/libav and run:<\/p>\n

emerge -C ffmpeg && emerge -1v libav<\/pre>\n
After this move you need to recompile all the packages depending on ffmpeg. This can be done with little help of revdep_rebuild or by using portage-2.2 and its sets by running:<\/p>\n
emerge @preserved-rebuild<\/pre>\n
packages that hard require media-video\/ffmpeg<\/h2>\n
As reported in the first comment the mplayer1 does now strictly require ffmpeg. So I did a little check to see which packages hard-require the other implementation and here is the list:<\/p>\n
games-arcade\/performous-0.6.1 (media-video\/ffmpeg)\r\nmedia-libs\/ffmpegsource-2.16.2.1_pre587 (>=media-video\/ffmpeg-0.9)\r\nmedia-libs\/mediastreamer-2.3.0-r1 (video ? media-video\/ffmpeg)\r\nmedia-plugins\/audacious-plugins-3.0.3 (ffmpeg ? >=media-video\/ffmpeg-0.7.3)\r\nmedia-plugins\/audacious-plugins-3.1 (ffmpeg ? >=media-video\/ffmpeg-0.7.3)\r\nmedia-plugins\/audacious-plugins-3.1.1 (ffmpeg ? >=media-video\/ffmpeg-0.7.3)\r\nmedia-plugins\/audacious-plugins-3.2 (ffmpeg ? >=media-video\/ffmpeg-0.7.3)\r\nmedia-plugins\/audacious-plugins-3.2.1 (ffmpeg ? >=media-video\/ffmpeg-0.7.3)\r\nmedia-plugins\/audacious-plugins-3.2.2-r1 (ffmpeg ? >=media-video\/ffmpeg-0.7.3)\r\nmedia-plugins\/mediastreamer-x264-1.1.7 (media-video\/ffmpeg)\r\nmedia-plugins\/mediastreamer-x264-1.3.3 (media-video\/ffmpeg)\r\nmedia-video\/dv2sub-0.3 (kino ? media-video\/ffmpeg)\r\nmedia-video\/mplayer-1.0_rc4_p20120213 (>=media-video\/ffmpeg-0.10)\r\nmedia-video\/mplayer-1.0_rc4_p20120405 (>=media-video\/ffmpeg-0.10.2)\r\nmedia-video\/mplayer-9999 (>media-video\/ffmpeg-0.10.2)\r\nmedia-video\/transcode-1.1.5-r2 (postproc ? media-video\/ffmpeg)\r\nnet-libs\/opal-2.2.11 (>=media-video\/ffmpeg-0.4.7)\r\nnet-libs\/opal-3.6.8 (ffmpeg ? >=media-video\/ffmpeg-0.5[encode])\r\n                    (x264 ? >=media-video\/ffmpeg-0.4.7)\r\nnet-libs\/opal-3.6.8-r1 (ffmpeg ? >=media-video\/ffmpeg-0.5[encode])\r\n                       (x264 ? >=media-video\/ffmpeg-0.4.7)\r\nnet-libs\/openh323-1.18.0 (>=media-video\/ffmpeg-0.4.7)<\/pre>\n
I bet most of these could work with libav, so if you are user of such package and want to try libav just edit the dependency to be on virtual\/ffmpeg instead of the media-video\/ffmpeg and see if it works.<\/p>\n","protected":false},"excerpt":{"rendered":"
As summary says in Gentoo you can finally decide which implementation of libav you want, good old ffmpeg named flavor or the new and shiny libav one. 14 months after I introduced it to main tree we finally got it stable almost everywhere (just ppc missing yet as usual :P)….  Continue reading → <\/span><\/a><\/p>\n","protected":false},"author":116,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"jetpack_publicize_message":"","jetpack_is_tweetstorm":false,"jetpack_publicize_feature_enabled":true},"categories":[8,11],"tags":[],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/blogs.gentoo.org\/scarabeus\/wp-json\/wp\/v2\/posts\/586"}],"collection":[{"href":"https:\/\/blogs.gentoo.org\/scarabeus\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blogs.gentoo.org\/scarabeus\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blogs.gentoo.org\/scarabeus\/wp-json\/wp\/v2\/users\/116"}],"replies":[{"embeddable":true,"href":"https:\/\/blogs.gentoo.org\/scarabeus\/wp-json\/wp\/v2\/comments?post=586"}],"version-history":[{"count":7,"href":"https:\/\/blogs.gentoo.org\/scarabeus\/wp-json\/wp\/v2\/posts\/586\/revisions"}],"predecessor-version":[{"id":779,"href":"https:\/\/blogs.gentoo.org\/scarabeus\/wp-json\/wp\/v2\/posts\/586\/revisions\/779"}],"wp:attachment":[{"href":"https:\/\/blogs.gentoo.org\/scarabeus\/wp-json\/wp\/v2\/media?parent=586"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blogs.gentoo.org\/scarabeus\/wp-json\/wp\/v2\/categories?post=586"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blogs.gentoo.org\/scarabeus\/wp-json\/wp\/v2\/tags?post=586"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}