Awesome sauce. Thanks Moritz! -- brion
On Fri, Jun 29, 2018 at 7:39 AM Moritz Muehlenhoff < [email protected]> wrote: > Hi all, > > On Thu, Jun 28, 2018 at 01:54:18PM -0700, Brion Vibber wrote: > > Current state on this: > > > > * still hoping to deploy the libvpx+ffmpeg backport first so we start > with > > best performance; Moritz made a start on libvpx but we still have to > > resolve ffmpeg (possibly by patching 3.2 instead of updating all the way > to > > 3.4) > > I've completed this today. We now have a separate repository component > for stretch-wikimedia (named component/vp9) which includes ffmpeg 3.2.10 > (thus allowing us to follow the ffmpeg security updates released in Debian > with a local rebuild) with backported row-mt support and linked against > libvpx 1.7.0. > > I tested re-encoding > > https://commons.wikimedia.org/wiki/File:Wall_of_Death_-_Pitts_Todeswand_2017_-_Jagath_Perera.webm > (which is a nice fast-paced test file) from VP8 to VP9, which results in > a size reduction from 48M to 31M. > > When using eight CPU cores on one of our video scaler servers, enabling > row-mt > gives a significant performance boost; encoding time went down from 5:31 > mins > to 3:36 mins. > > All the details can be found at > https://phabricator.wikimedia.org/T190333#4324995 > > Cheers, > Moritz > > _______________________________________________ > Wikitech-l mailing list > [email protected] > https://lists.wikimedia.org/mailman/listinfo/wikitech-l _______________________________________________ Wikitech-l mailing list [email protected] https://lists.wikimedia.org/mailman/listinfo/wikitech-l
