i tried VP9 uploading a video with a spinning wheel made with a samsung galaxy s5, mp4, original size 99.5MB. i removed the sound beforehand though: https://commons.wikimedia.org/wiki/File:180522-alpaca-spinnen-gotthard-passh%C3%B6he-silent.webm
using: https://tools.wmflabs.org/video2commons/ which used the following (i removed the paths ...) ffmpeg -y -i dl.unknown_video -threads 0 -skip_threshold 0 -bufsize 6000k -rc_init_occupancy 4000 -qmin 19 -qmax 19 -vcodec libvpx-vp9 -tile-columns 4 -f webm -ss 0 -an -pass 1 -passlogfile dl.unknown_video.an.vp9.webm.log /dev/null ffmpeg -y -i dl.unknown_video -threads 0 -skip_threshold 0 -bufsize 6000k -rc_init_occupancy 4000 -qmin 19 -qmax 19 -vcodec libvpx-vp9 -tile-columns 4 -f webm -ss 0 -an -pass 2 -passlogfile dl.unknown_video.an.vp9.webm.log dl.unknown_video.an.vp9.webm the size increased by 30 mb, the quality on a smaller screen is the same, i did not verify on a high resolution screen if a difference can be noticed. rupert On Fri, Jul 27, 2018 at 2:47 AM, Brion Vibber <bvib...@wikimedia.org> wrote: > Oh and one more thing! > > For the VP9 configuration I'll be enabling 1440p and 2160p ("4K") > resolutions, which people can manually bump up to when watching videos with > a suitable 4K source on a high-res screen. They use higher data rates, but > only a small fraction of input files are 4K so should not significantly > increase disk space projections for now. > > These can take a long time to compress, so if we find it's problematic we'll > turn them back off until the jobs can be split into tiny chunks (future work > planned!), but it works in my testing and shouldn't clog the servers now > that we have more available. > > (Note that the ogv.js player shim for Safari will not handle greater-than-HD > resolutions fast enough for playback, even on a fast Mac or iPad; for best > results for 4K playback use Firefox, Chrome, or a Chromium-based browser.) > > -- brion > > On Thu, Jul 26, 2018 at 5:39 PM Brion Vibber <bvib...@wikimedia.org> wrote: >> >> Ok, after some delay for re-tweaking the encoding settings for higher >> quality when needed, and pulling in some other improvements to the config >> system, all related updates to TimedMediaHandler have been merged. :D >> >> If all goes well with the general deployments in the next few days, expect >> the beginning of VP9 rollout starting next week. >> >> Changes since the earlier announcement: >> * the new row-multithreading will be available, which allows higher >> threading usage at all resolutions; encoding times will be more like 1.5-2x >> slower instead of 3-4x slower. >> * switch to constrained quality with a larger max bitrate: many files will >> become significantly smaller in their VP9 versions, but some will actually >> increase in exchange for a huge increase in quality -- this is mostly 60fps >> high-rate files, and those with lots of motion and detail that didn't >> compress well at the default low data rates. >> >> -- brion >> >> On Fri, Jun 29, 2018 at 9:46 AM Brion Vibber <bvib...@wikimedia.org> >> wrote: >>> >>> Awesome sauce. Thanks Moritz! >>> >>> -- brion >>> >>> On Fri, Jun 29, 2018 at 7:39 AM Moritz Muehlenhoff >>> <mmuhlenh...@wikimedia.org> 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 >>>> Wikitech-l@lists.wikimedia.org >>>> https://lists.wikimedia.org/mailman/listinfo/wikitech-l > > > _______________________________________________ > Multimedia mailing list > multime...@lists.wikimedia.org > https://lists.wikimedia.org/mailman/listinfo/multimedia > _______________________________________________ Wikitech-l mailing list Wikitech-l@lists.wikimedia.org https://lists.wikimedia.org/mailman/listinfo/wikitech-l
