Hurrah!! Thank you, Brion and on and on. On Thu, Aug 3, 2017 at 4:27 PM, Brion Vibber <[email protected]> wrote:
> Due to ongoing issues with ffmpeg2theora & upcoming server upgrades, I'm > planning to accelerate our migration from Ogg Theora video output to WebM > VP8: https://phabricator.wikimedia.org/T172445 > > == When will it change? == > > Sometime in August 2017 as schedules permit, unless surprises pop up in > final testing. > > == What will change? == > > Folks using Chrome and Firefox may not notice any difference -- these > browsers have used native WebM playback by default for some time. "Ogg" > will disappear from the list of optionally-playable and downloadable > formats. > > In Safari, IE, or Edge where the 'ogv.js' compatibility shim is used, you > will see videos automatically show up in WebM mode instead of Ogg mode. > > There is a tradeoff: higher quality & lower bandwidth use, but higher CPU > usage. On very slow computers or at very high resolutions, you may hit CPU > limits at one resolution step lower than with Ogg. > > == Why are we making this change? == > > * Eventually we need to go to WebM to support adaptive streaming, so this > was always planned for the long term... > * For best quality we use an unreleased version of libogg and > ffmpeg2theora, but there are still some bugs in there and we routinely get > reports of odd hangs or crashes. > * Ops is updating the servers, and continuing to maintain the custom > packages that are still crashy is getting to be problematic. > * Dropping the Ogg format for video will free up disk space and and CPU > time, and should result in faster turnaround for derived file generation. > > == What about Ogg audio? == > > Ogg is still being used for audio, and will not be affected. > > -- brion > > _______________________________________________ > Multimedia mailing list > [email protected] > https://lists.wikimedia.org/mailman/listinfo/multimedia > > -- Samuel Klein @metasj w:user:sj +1 617 529 4266
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