Standard format of videos embedded in ePUB

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With the new update on Readium, is there a document or web link somewhere that specifies the standard format of a video that is to be embedded into a ePUB? The ePUB is then to be viewed using Readium.

Some people are saying that the videos must be in H264. Some say they must be in x264. MP4? M4V? Please someone advise what should be the standard format.


Ultimately, it depends on the platform. Readium per se has no control over what codecs are supported by the underlying browser engine in Chrome. That said, in my experience, most H264, MP4, M4V and even VP8 videos seem to work fine. However, we have encountered some videos in those formats that DON'T work. It appears that they were not properly encoded or used some unusual encoding that the browser doesn't support.

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