[mediacapture-record] Multi-blob encoding (#192)

youennf has just created a new issue for https://github.com/w3c/mediacapture-record:

== Multi-blob encoding ==
The spec states that: "the individual Blobs need not be playable, but the combination of all the Blobs from a completed recording MUST be playable".

This does not put any constraint on how encoded data is split into blobs.
I am wondering whether web pages would like (by default or as an option) a more DASH/HLS friendly splitting.
I am also wondering whether Chrome and Firefox have some common behavior in that area.

Please view or discuss this issue at https://github.com/w3c/mediacapture-record/issues/192 using your GitHub account