Future topics and features

[dsilhavy]

This thread can be used to discuss potential new features and topics as well as important changes and bugfixes. As a starter some ideas. We need to check what is already supported:

Features

• Support for MPD Patching, see 4th Edition AMD1 MPD Patch Update Implementation #92
• Low Latency streaming
  • Resync element
  • PRFT support
• DRM
  • ECCP support, requires Clearkey and a separate server endpoint
  • Key rotation
  • Authz url
• DASH events
  • Version 0 vs Version 1 events
• <ServiceDescription>
  • <OperatingBandwidth>
  • All <Latency> parameters supported? (looks good)
  • All <PlaybackRate> parameters supported? (looks good)
• Dash Representations
  • @qualityRanking
• Negative test content
  • 404 errors
  • Corrupt segments
  • Gaps
  • negative/positive @eptDelta
  • negative/positive @pdDelta
  • Delayed requests
• <Preroll> element
• Content steering

Operational aspects

• Create a Docker image for easy setup and deployment of the live simulator
• Making a new livesim2 written in Go, see https://github.com/edgeware/mp4ff for potentially reusable code
• Upgrade to Python 3 needed? // Python3 transition already done. The MPD Patch PR, is towards Python2 version, though.
• Content ingest is fragile, and limited in the sense that segment durations must be integer seconds in average. A more flexible approach that can support other segment durations would be helpful.

[wilaw]

Dynamic ad insertion via SSAI should also be a feature, as this is on the most difficult features to enable at low latency.

[irajs]

• DASH events:

  • verification of correct MPD & inband event processing/dispatch mode/API
  • adding support for alternative MPD event (for support of preroll/midroll)

• onRequest XML processing:

  • verification of correct resolution (one-time resolution and condition for re-resolving with MPD update, etc.)

[dsilhavy]

Just saw this:

• https://github.com/Dash-Industry-Forum/test-vectors-drm-authz-token-provider
• https://github.com/Dash-Industry-Forum/dash-live-source-simulator-drm-data-generator