the mpd clearkey link doesn't work but on OTT Navigator it does, what is the influence of the default kid?

[untukapa123]

Version

Media3 1.1.0

More version details

can't play the mpd link which doesn't have Default:KID in it?

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Devices that reproduce the issue

All android version

Devices that do not reproduce the issue

none

Reproducible in the demo app?

Yes

Reproduction steps

Not tested

Expected result

none

Actual result

none

Media

url = http://linear004-gb-dash1-prd-ak.cdn.skycdp.com/100e/Content/DASH_003_sm/Live/channel(skysportsf1)/manifest_hd.mpd

clearkey hex = 0005de226b16ae5d75df48aa6099cca6:75e80519551edc03e890e13f01abd26d

Bug Report

• You will email the zip file produced by adb bugreport to dev.exoplayer@gmail.com after filing this issue.

[oceanjules]

I think the guidelines are clear on default_KID being present:
https://dashif-documents.azurewebsites.net/Guidelines-Security/master/Guidelines-Security.html#CPS-mpd-scheme

"The cenc:default_KID attribute SHALL be present and have a value matching the default_KID in the tenc box."

However, the only mention of an mpd without a default_KID that I managed to find was: https://dashif.org/docs/IOP-Guidelines/DASH-IF-IOP-Part6-v5.0.0.pdf

There, at "9.3 In-band key rotation signalling", a setup is described for having no default_KID in the ContentProtection element. Can you confirm that the rest of the bullet points are satisfied?

[icbaker]

I haven't tried playing your content, but I can confirm that ExoPlayer requires default_KID to be present, as required by the inter-op guidelines linked above. See also google/ExoPlayer#9169 (comment).

I'm going to close this as I think that answers the question.