I'm landing a big update to the ogv.js Ogg player shim for Safari/IE/Edge;
ogv.js 1.1.3 fixes some seek bugs with the future video.js frontend code,
and has a bunch of performance & correctness updates.
On slower machines (like older iPhones, or old Windows machines running IE)
ogv.js now makes better use of dual-core CPUs to overlap decoding one frame
with drawing another, etc. It's also much more aggressive about keeping
audio and video synchronized, making short delays instead of letting it get
wildly out of sync followed by a weird catchup period.
With the seek & sync bugs mostly cleaned up, I'm also turning some of my
A/V attention to iOS, making updates to my OGVKit Objective-C library which
uses native builds of the Ogg and VPX libraries, able to handle higher
resolutions on slower phones than ogv.js can. I'll track down the current
iOS mobile app folks and see what the best way to work with them on this
Back to TimedMediaHandler -- Derk-Jan has been doing some more updates on
the Video.JS-based new frontend code, which I'm reviewing through this week
and hope to have merged and cleaned up for further testing. In addition to
looking more modern and being more actively maintained, video.js is more
mobile-friendly -- deploying the new frontend when it's ready will get us
more consistent media playback on Android, and ogv.js-based playback on
iPhone and iPads in the mobile view.
I've also got a number of back-end fixes to finish up such as a new
maintenance script for re-running video transcodes. It currently needs just
one more option, which is a 'throttle' so we can background-run it
unattended without worrying it'll fill up the job queues.
In the closer future, 720p and 1080p Ogg transcodes should start rolling
out in the next few weeks for manual switching, and we'll see how it all
Farther out in the future -- I did testing last month on transcoding, and
some preliminary planning for how to do adaptive streaming (seamless
resolution switching as necessary). I've got a pretty good handle on how it
will work for native WebM playback, and a good theoretical model for how it
should be possible with ogv.js and Ogg playback by creating an analogue of
the native Media Source Extensions APIs, and encoding / dividing up the
packetized files _just so_.
Note that creating adaptive-switchable Ogg transcodes will require
customizing ffmpeg2theora and/or creating a separate similar tool specific
to our needs. Shouldn't require any new daemons/services though.
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