feat: #3610 minBufferToKeep

[orange4glace]

#3610

Any thoughts please!

[dsilhavy]

Can we solve this problem by using the segment duration rather than a static value? Based on your description in #3610 I assume that the Tizen TV clears everything up to the next GoP/segment boundary as soon as you want to clear a buffer range that does not correspond to a segment boundary?

Consequently, if we keep at least one segment duration + SAFETY_OFFSET (maybe sth like 500ms) in the buffer it should not clear everything and cause a gap?

[orange4glace]

@dsilhavy Oh I didn't think about that. That would be more reasonable!
Since there's a code which is getting the executed fragment within the currentTime, I just added BUFFER_RANGE_CALCULATION_THRESHOLD (which is 500ms, and I'm not sure this is the best name?) as a safety guard.
Please squash & merge if it looks great or I'll open a new PR to clean up the commit history.

[Douina]

please where I can find the source code the dynamic algorithm that groups bola and troughtput

[orange4glace]

please where I can find the source code the dynamic algorithm that groups bola and troughtput

Maybe you mean this, https://github.com/Dash-Industry-Forum/dash.js/blob/development/src/streaming/controllers/AbrController.js#L490

[Douina]

yes,but this is just the update function,i search for the real one
thanks you

[dsilhavy]

@orange4glace I would prefer to only apply this offset in case a QUOTA_EXCEEDED_ERROR error occurs. Could you do it that way and rebase your change against the latest development branch?