MediaSource API and mp4

Question

I followed this example from Html5Rocks.com, that is using the MediaSource API and a .webm video. I tried the example with another .webm video and it was working, but when I

Answer 1

Update: MP4-DASH is now supported.

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MP4 is not supported in Chrome's implementation of the Media Source API yet.

We have plans to add support, but it won't be done for a couple of months. We are currently focusing on updating the existing implementation to match the new version of the Media Source API spec that was recently proposed to the W3C.

You can follow the progess of the implementation upgrade by watching this chromium bug