RC3_v2.0.0 with BufferOccupancyABR: media decode errors, does not play until end

[phloxic]

• http://flowplayer.blacktrash.org/fp6/playlist-dash.html (new buffer occupancy ABR enabled)
• http://demos.flowplayer.org/playlist/prev-next-overlayed.html (default old ABR logic)

With buffer occupancy enabled:

• Safari (and very rarely in Firefox and Chrome): now and then media decode error
• Chrome: with throttled connection (e.g. good 2G in network console) videos often do not play through

Works with old ABR logic.

[dsparacio]

@blacktrash Thanks for the feedback. We are in the experimental alpha phase with BOLA and we know about some issues but not this one. We have started a Wiki to track progress and issues during the 2.1 release

https://github.com/Dash-Industry-Forum/dash.js/wiki/BOLA-status/

[phloxic]

This sample
http://media.blacktrash.org/fp/test/night1-gpfix.mpd
can be used for testing in the reference player http://dashif.org/reference/players/javascript/v2.0.0/samples/dash-if-reference-player/

[spiterikevin]

I reproduced this issue in a throttled Chrome connection, and traced it to an issue when the ScheduleController delays loading a fragment - BOLA sometimes asks for a fragment to be delayed but the old ABR logic does not.

Moving the delay from the FragmentModel to the FragmentLoader fixed the issue in my test. It works by allowing the xhr request to be generated right away, otherwise the stream might end and the request can no longer be generated. The delay is then inserted just before sending the xhr request. I still need to check that the fix really solves the issue and that it doesn't break anything else.

spiterikevin@3768a7a

[phloxic]

@spiterikevin - I can confirm that this fixes the issue with end of video detection in Chrome.

[phloxic]

Regarding encoding errors in Safari: This seems to have improved in 2.0.0 proper.

However, testing with throttled connection in Safari still reveals muxing problems with (emergency?) down switches which do not happen with BOLA turned off:

vs 'original' colors:

[spiterikevin]

@blacktrash - thank you for the quick feedback. I'll keep looking into the muxing problem.

[phloxic]

@spiterikevin - FYI, I've managed to get the encoding error and color 'effect' in Firefox too.

[phloxic]

Update of test stream URLs:
http://stream.flowplayer.org/night1-heaac.mpd (with HE-AAC) and http://stream.flowplayer.org/night1.mpd (with LC-AAC)
I actually have to re-check with 2.1.1.

[dsilhavy]

Both test stream urls are not available anymore. If you still encounter an issue with your streams please file a new ticket.