+1 to Rüdiger. I think that most of the problems we experienced in the past with ffmpeg were caused because of our lack of experience at using it. I think that the operations used in matterhorn are stable enough and they're not likely to change between versions.
2011/5/5 Ruediger Rolf <[email protected]> > I don't think that changing the ffmpeg version is something that need many > QA work. For 1.0 and 1.1 we always used a ffmpeg trunk version (to get the > -vf option). I have never encountered a problem with the ffmpeg version with > matterhorn. > > By the way the recent versions have a better multi-threading support, just > as an additional bonus for switching. > > Rüdiger > > Am 04.05.2011 18:33, schrieb Christopher Brooks: > > On Wed, 04 May 2011 17:37:51 +0200 >> Ruediger Rolf<[email protected]> wrote: >> >> Hi list, >>> >>> in our local 1.1 system we added a new workflow that creates videos >>> in different qualities for different internet bandwith: >>> http://video.virtuos.uni-osnabrueck.de:8080/engage/ui/watch.html?id=195 >>> Change the "Quality" setting in the lower right to see the different >>> qualities. >>> >>> We would like to too add this feature to the trunk too, but the >>> creation of the different qualities requires a more recent ffmpeg >>> version that supports the -vf (video filter) option. With -vf scale >>> it is possible use different resolutions for each quality and still >>> keep the correct aspect ratio. >>> >>> I added an additonal workflow definition that encodes the video in >>> different qualities. If we keep our ffmpeg version these videos might >>> get the wrong aspect ratio if they are not in 4:3 ratio. >>> >>> Any objections against an update of ffmpeg? >>> >>> Rüdiger >>> >>> I like the idea of upgrading to a newer version, but it means a big qa >> effort..... >> >> Chris >> >> > > -- > > ________________________________________________ > Rüdiger Rolf, M.A. > Universität Osnabrück - Zentrum virtUOS > Heger-Tor-Wall 12, 49069 Osnabrück > Telefon: (0541) 969-6511 - Fax: (0541) 969-16511 > E-Mail: [email protected] > Internet: www.virtuos.uni-osnabrueck.de > > _______________________________________________ > Matterhorn mailing list > [email protected] > http://lists.opencastproject.org/mailman/listinfo/matterhorn > > > To unsubscribe please email > [email protected] > _______________________________________________ >
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