Dash.js: v7-MultiDRM-MultiKey playback does not start

[sandersaares]

Environment

• [x] The MPD passes the DASH-IF Conformance Tool on http://dashif.org/conformance.html
• [x] The stream has correct Access-Control-Allow-Origin headers (CORS)
• [x] There are no network errors such as 404s in the browser console when trying to play the stream
• [x] The issue observed is not mentioned on https://github.com/Dash-Industry-Forum/dash.js/wiki/FAQ
• [x] The issue occurs in the latest reference client on http://reference.dashif.org/dash.js/ and not just on my page
• Link to playable MPD file: https://media.axprod.net/TestVectors/v7-MultiDRM-MultiKey/Manifest_1080p.mpd (from Axinom modern test vectors in the sources menu)
• Dash.js version: nightly
• Browser name/version: Chrome 62, Chrome Canary, Firefox 56, Edge 40
• OS name/version: Windows 10 v1703

Steps to reproduce

1. Select the video from the sources list (to ensure proper DRM configuration) and press Load.

Observed behaviour

Playback does not start.

In Chrome, the first video frame is displayed.

Console output

ChromeCanary.txt
edge.txt
Firefox.txt

[davemevans]

Seems to be related to the encrypted audio - if you select an unencrypted audio stream (e.g. "et-ET"), everything works fine.

00:00:04 96 | info | DecryptingDemuxerStream: no key for key ID 585F233F307246F19FA46DC22C66A014

[sandersaares]

Aha, good catch. In fact, I notice the player only does a single license request. That's not right, given that audio and video use different keys (I assume it is not requesting both keys in a single request, though will check just in case).

Edit: yes, I confirm just one key ID in the license request.

[davemevans]

Is this a duplicate of https://github.com/Dash-Industry-Forum/dash.js/issues/1595?

[sandersaares]

Yes, I think you may be right there!

[epiclabsDASH]

Ok, let's then follow this one on #1595. I think both are coming from the same origin, the lack of multiple keys support in dash.js.