[azakai]

1. This works much faster on Firefox nightly (that's where we demo'd it on). Nightly has a lot of JS engine improvements that are not in stable yet (but will be in a month or two).

2. This does not use any hardware acceleration yet. This is simply compiling the Android C decoder into JS, nothing else - just a few days of work. We will now start to look at actually optimizing the code specifically for JS, and also to use GPU shaders for the relevant part of the code. Both of those can potentially make this even faster.

Regarding real-world applications, the interesting possibility is for websites to ship their own codecs. As I mentioned in a comment above, imagine an anime video website that ships a video decoder optimized for that kind of content - it could be much more efficient than stock H.264. Also, if websites can ship their own decoders, they can continually improve them (unlike now where websites rely on client decoders which are not constantly being improved).