dash.js monthly sync call - Today 14.07.2022 17:00 CEST
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daniel....@fokus.fraunhofer.de
Jul 14, 2022, 8:30:47 AM7/14/22
to dash.js
Hi all,
a friendly reminder that we will have our next dash.js sync call today at 17:00 CEST. You can find all information to join the call and a calendar invite here: https://github.com/Dash-Industry-Forum/dash.js/wiki/Meeting-Minutes
Please also find the rough agenda for today below.
Face to Face meeting
- 20th June : 13:00 - 18:00
- Registration open: https://www.eventbrite.com/e/dashjs-face-to-face-meeting-2022-tickets-311628327717
- Meeting minutes: https://github.com/Dash-Industry-Forum/dash.js/wiki/European-2022-face-to-face-meeting,-June-20th
- Release candidate date: 15.07.2022
- Release date 22.07.2022
- Add support for specifying the start time of the stream as part of the initialize or the attachSource call
- https://github.com/Dash-Industry-Forum/dash.js/pull/3988
- VoD: Start time relative to first period
- Live:
- Option A: Start time relative to AST
- Option B: Start time relative to DVRWindow.start
- Option C: Start time relative to first period
- JSDoc cleanup
- Dispatch volumechange from the native video element via dedicated MediaPlayerEvent
- Extends the License Request Complete event to include the original server response when DRM errors are reported
- Add example for multi audio tracks with initial track selection
- Do not trigger inline and inband events multiple times after a manifesh refresh.
- Account for events defined in different periods in the EventController.js
- https://github.com/Dash-Industry-Forum/dash.js/pull/3984
- In general: Increasing complexity for event handling
- Inline & Inband events
- Same IDs in different periods
- Version 0 vs. Version 1 events
- onReceive and onStart mode
- Would be good to define test content for all the different variants with concrete expectations regarding client behavior.
- Fix for a rounding error not allowing BUFFERING_COMPLETED to get fired
- Fix _checkPortalSize and initialRatio caluculation for unsorted Representations in an AS
- Fix text track enabling for MSS live streams
- Fix bux in abandon request workflow. Also enable rule by default
- Use lastBitrateCachingInfo.enabled and lastMediaSettingsCachingInfo.enabled
- Check for keyPairs in clearkeys object before updating the key session
- Fix/clearkey from ref UI: Check for initData in protData before overwriting
- Fix SegmentTimeline's segment getter from requested time
- Fix wrong description of PLAYBACK_LOADED_DATA event
- Fix a bug that lead to undefined customParametersModel after calling Mediaplayer.reset()
- Fix d trace httpList metric reporting
- Overwrite manifest mediaPresentationDuration if duration mismatch
- https://github.com/Dash-Industry-Forum/dash.js/pull/3971
- Only applied if enabled via settings and if mediaPresentationDuration is longer than Period durations. Any concerns with this?
Next releases
- ABR testbed
- Collect test results of open-source players to test against
- Competing clients in same limited network
- Discussing synergies and cooperation in SVA - Players and Playback Study Group Call
- New documentation based on Github pages
- Current draft: https://github.com/dsilhavy/dashjs-jekyll-documentation
- Looking into throughput and ABR
- https://github.com/Dash-Industry-Forum/dash.js/pull/3776
- Fix for AbandonRequestRule: https://github.com/Dash-Industry-Forum/dash.js/pull/3944
- Implemented Resource Timing API for XHR
- Found an issue with current XHR throughput calculation
- Progress event is used, "firstByteDate" is set to timestamp of first progress event. By then already some bytes have been received. The timestamp does not account for those bytes since firstByteDate is used as the starting timestamp. See slides for detailed explanation: https://members.dashif.org/wg/dash_js/document/4682
- Currently, reworking code structure for throughput calculation and adding new calculation methods
- Split storing of traces and concrete calculation into ThroughputModel and ThroughputController classes
- Harmonic mean (new), Arithmetic mean, Exponential Weighted Moving Average
- Any other method? LSTM (Long short-term memory)?
- Timeout should be relative to segment duration
- Abandon segment download before running into an empty buffer
- Related issues
- Separate project board for related issues: https://github.com/Dash-Industry-Forum/dash.js/projects/3
- Abandon request rule : https://github.com/Dash-Industry-Forum/dash.js/issues/3840
- Stability at high bitrates: https://github.com/Dash-Industry-Forum/dash.js/issues/3853
- CMCD mtp field: https://github.com/Dash-Industry-Forum/dash.js/issues/3740
- Low latency throughput calculation: https://github.com/Dash-Industry-Forum/dash.js/issues/3538
- CMCD Whitelisting
- ARI track
- Parse track information and dispatch them via event
- @Daniel: Ask Thomas about slide deck explaining usage and use cases
- PRFT box parsing
- Content Steering
- Server needed, but could easily be added
- Document: https://onedrive.live.com/edit.aspx?resid=D699C028F8104923!42739&ithint=file%2cdocx&authkey=!AGAGj2Ol2gjLgS4
- F2F discussion item
- Support for adaptation-set-switching <SupplementalProperty>
- MSE in webworkers
- Improve developer documentation
- New reference UI
- Improved XML parsing
- Push up in priority
- Compare the object model
- Discuss in the F2F
- Might improve the existing library
- update
- remove unused non "_asArray" representation
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