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Player not parsing Clearkey license acquisition url. #10246

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sr1990 opened this issue May 7, 2022 · 3 comments
Closed
1 task

Player not parsing Clearkey license acquisition url. #10246

sr1990 opened this issue May 7, 2022 · 3 comments
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@sr1990
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sr1990 commented May 7, 2022

ExoPlayer Version

2.17.1

Devices that reproduce the issue

Pixel 5

Devices that do not reproduce the issue

No response

Reproducible in the demo app?

Yes

Reproduction steps

Added

      {
        "name": "CLEARKEY (cenc)",
        "uri": "https://media.axprod.net/TestVectors/v7-MultiDRM-SingleKey/Manifest_1080p_ClearKey.mpd",
        "drm_scheme": "clearkey"
      },

to media.exolist.json.

Works if I specify the drm license uri

      {
        "name": "CLEARKEY (cenc)",
        "uri": "https://media.axprod.net/TestVectors/v7-MultiDRM-SingleKey/Manifest_1080p_ClearKey.mpd",
        "drm_scheme": "clearkey",
        "drm_license_uri": "https://drm-clearkey-testvectors.axtest.net/AcquireLicense"
      },

Expected result

The media plays successfully.

Actual result

Playback crashes with the following error:
E/EventLogger: playerFailed [eventTime=4.38, mediaPos=0.00, window=0, period=0, errorCode=ERROR_CODE_DRM_LICENSE_ACQUISITION_FAILED

One workaround is
in DashManifestParser.java

  1. in parseContentProtection(),
  • add the case to parse clearkey
case "urn:uuid:e2719d58-a985-b3c9-781a-b030af78d30e":
          uuid = C.CLEARKEY_UUID;
          schemeType = "clearkey";
          break;
  • Parse the clearkey url in the same method
if (XmlPullParserUtil.isStartTag(xpp, "clearkey:Laurl")) {
        if (xpp.next() == XmlPullParser.TEXT) {
          licenseServerUrl = xpp.getText();
        }
 } 
  1. In parseAdaptationSet(), after line 416 while parsing the Content Protection, add
     } else if (XmlPullParserUtil.isStartTag(xpp, "ContentProtection")) {
        Pair<String, SchemeData> contentProtection = parseContentProtection(xpp);
        if (contentProtection.first != null) {
          drmSchemeType = contentProtection.first;
        }
        if (contentProtection.second != null) {
          if (drmSchemeType != null && drmSchemeType == "clearkey") {
            // update the license url of cenc
            for (int i = 0;i<drmSchemeDatas.size();i++) {
              if (drmSchemeDatas.get(i).uuid == C.COMMON_PSSH_UUID &&
                  drmSchemeDatas.get(i).licenseServerUrl == null)
                drmSchemeDatas.get(i).licenseServerUrl = contentProtection.second.licenseServerUrl;
            }
          }
          drmSchemeDatas.add(contentProtection.second);
        }

Please let me know what you think OR if I am missing anything.
Thanks.

Media

https://media.axprod.net/TestVectors/v7-MultiDRM-SingleKey/Manifest_1080p_ClearKey.mpd

Bug Report

  • You will email the zip file produced by adb bugreport to [email protected] after filing this issue.
@sr1990 sr1990 changed the title Player not parsing Clearkey license acquisition url string. Player not parsing Clearkey license acquisition url. May 7, 2022
@tonihei
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tonihei commented May 13, 2022

I think the content is configured as expected (see #3138 (comment) as a verification that both ContentProtection tags are expected, and Dash-Industry-Forum/dash.js#3343 for another example where parsing the license url is requested).

And the proposed solution also looks sensible to me. Would you be willing to send a PR with the suggested changes?

I'll mark the issue as an enhancement in the meantime (because it's not a bug, more a new feature to detect Clearkey LicenseURLs).

@tonihei
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tonihei commented Jul 15, 2022

This is now supported after merging a modified version of #10260.

@tonihei tonihei closed this as completed Jul 15, 2022
@sr1990
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sr1990 commented Jul 16, 2022

Thanks @tonihei !

@google google locked and limited conversation to collaborators Sep 14, 2022
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