From: Eric Carlson [mailto:eric.carl...@apple.com]
> FWIW, Safari supports negative playback rates on the desktop and on iOS. > > ... > > The crash Garrett noted in Safari 8 is a bug that “only" happens with MSE > content. That's really helpful, thanks. Combined with Edge's keyframes-only support, it sounds like we should probably leave the spec as it is. Do you have thoughts on a mozPreservesPitch equivalent?