Concatenate Parts Of Two Or More Webm Video Blobs

Is it possible to to concatenate parts of two or more video blobs encoded in webm format using just client side javascript?

Solution 1:

What you are looking for is the media source extension as defined here: http://www.w3.org/TR/media-source/

Both Firefox (partially), Opera Chrome already support this. IE11 only on Windows 8+.

Also, take a look at DASH (https://en.wikipedia.org/wiki/Dynamic_Adaptive_Streaming_over_HTTP) and HLS (https://en.wikipedia.org/wiki/HTTP_Live_Streaming)