It would be useful to have pitch adjustment for VIDEO element. There is playbackRate, to control playback speed — useful!* And there is vv.mozPreservesPitch, in Firefox, which can be set to false, so that pitch will adjust to the speed of the video, sort of like old analog gear (tapes and records).
Negative playbackRate, to watch videos backwards, currently crashes Safari 8; Firefox 40 says "not implemented". I think it would be entertaining for example, to watch things like cars uncrashing. Should this work? And if so, shouldn't audio match the video speed for backwards playing? I think "yes, and yes." But variable pitch control it would be useful for music adjustments like "over the mountain", "Black Star", "Take your Whiskey Home", all originally recorded at half-step detuning (A=415), none of which match "standard tuning" commonly used in schools, industry, etc. Recordings of Baroque era music often use instruments tuned lower (and also different scale temperment, but that is a different issue). So it would be nice to adjust the pitch with a `pitchAdjustment` property, as a double, to adjust pitch in cents. Currently, there are applications to do this, such as the "Amazing Slow Downer". Could similar API functionality be realized for VIDEO elements, to make such apps in-browser? For that, there must be input from browser vendors to say "yes, we see the value in that, and it's possible". YouTube Speed https://gist.githubusercontent.com/GarrettS/c7bf3f49e9ce43f6bd25/raw/c9dc1d3e42529fb5bd2b5b283a9190fc233cd5c8/Variable%2520Speed%2520for%2520YouTube Over the Mountain https://www.youtube.com/watch?v=wO2BDiSHTh8&feature=youtu.be Black Star https://www.youtube.com/watch?v=blNQZc84Q5c Take your whiskey home https://www.youtube.com/watch?v=4ckFuURIWXc Amazing Slow Downer http://www.amazing-slow-downer.com/ -- Garrett @xkit ChordCycles.wordpress.com garretts.github.io personx.tumblr.com
