Note: This project is NOT maintained. I don't provide any support for it.

This is an example of the Cisco's OpenH264 library compiled to javascript with emscripten for running natively in browsers.

This is very similar to eg https://github.com/mbebenita/Broadway and others. The main difference is that they use the BSD decoder which is limited to h264 baseline profile. Among others, that means no cabac. OpenH264 (http://www.openh264.org/) does support cabac.

• CABAC decoding
• Tested in Chrome v43 and Firefox 40
• single nal decoding, makes it easy to decode any container externally
• > 30 fps for 1280x720 main profile stream (cabac encoded) on Haswell i7

• Lot's of hardcoding in demo.

• Get emscripten (http://kripken.github.io/emscripten-site/docs/getting_started/Tutorial.html)
• Run make

The Makefile will download all dependencies and build everything.

There are a lot of copying going on, Several reasons:

• A quick look didn't reveal any buffer control in OpenH264 (validity of data pointers are until next decode call?)

• closure-compiler, even with at whitespace level makes playback slower and more jittery. No clue why.