This repository is a mirror of the 2019 branch from the https://github.com/youtube/js_mse_eme/ repository, with some customization for Raptor applied.
With the raptor branch checked out, it is used for executing the raptor-youtube-playback performance tests.
The description of the original repository is:
js_mse_eme is an externally-published tool that is aimed to test the validity of a browser's HTML5 Media Source Extension and Encrypted Media Extension implementations. As an added bonus, this tool is used by YouTube to certify hardware electronic devices (e.g. TVs, settop boxes, etc...).
Year specific tests and tools are in the respective branches.