I came across this interesting article today, this article is more of a report with aggregated data from a compilation of research and latest test results, focused on HTML5 Video playback. The findings or the test results of this research are grouped into few topics that are found to be the most critical for online video.
These topics are:
1. Market Share of Browsers and Devices
2. Media Formats
3. Tag Attributes
4. Fullscreen Playback
5. Adaptive Streaming
Here is the link to the full article: