Encrypted media capabilities

media.drm-capabilities

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// Test source pending.

Definition

Queries bounded key-system configurations without creating sessions or acquiring licenses.

Find it in the repository

Collector source: core/signals/video/drm-capabilities.ts
Export: measurementModule · Signal object
Field definitions: core/definitions/media/drm-capabilities.ts
Capture membership: Product capture · common/capture/product.ts
Page registration: app/signals/registry.ts
Field projection: core/results/measurement.ts

Execution contract

Signal: media.drm-capabilities
Collector: media.drm-capabilities
API / surface: core/signals/video/drm-capabilities.ts
Timeout: 2250 ms
Companion signals: None
Fixture inputs: Declared requests (listed below)

Exact request inputs

[
  {
    "key": "media.drm-capabilities.responses",
    "inputs": {
      "system-0-baseline": {
        "keySystem": "org.w3.clearkey",
        "configurations": [
          {
            "initDataTypes": [
              "cenc"
            ],
            "distinctiveIdentifier": "not-allowed",
            "persistentState": "not-allowed",
            "sessionTypes": [
              "temporary"
            ],
            "videoCapabilities": [
              {
                "contentType": "video/mp4; codecs=\"avc1.42E01E\"",
                "robustness": ""
              }
            ]
          }
        ]
      },
      "system-0-bogus": {
        "keySystem": "org.w3.clearkey",
        "configurations": [
          {
            "initDataTypes": [
              "cenc"
            ],
            "distinctiveIdentifier": "not-allowed",
            "persistentState": "not-allowed",
            "sessionTypes": [
              "temporary"
            ],
            "videoCapabilities": [
              {
                "contentType": "video/mp4; codecs=\"avc1.42E01E\"",
                "robustness": "BOGUS"
              }
            ]
          }
        ]
      },
      "system-0-keyids": {
        "keySystem": "org.w3.clearkey",
        "configurations": [
          {
            "initDataTypes": [
              "keyids"
            ],
            "distinctiveIdentifier": "not-allowed",
            "persistentState": "not-allowed",
            "sessionTypes": [
              "temporary"
            ],
            "videoCapabilities": [
              {
                "contentType": "video/mp4; codecs=\"avc1.42E01E\"",
                "robustness": ""
              }
            ]
          }
        ]
      },
      "system-1-baseline": {
        "keySystem": "com.widevine.alpha",
        "configurations": [
          {
            "initDataTypes": [
              "cenc"
            ],
            "distinctiveIdentifier": "not-allowed",
            "persistentState": "not-allowed",
            "sessionTypes": [
              "temporary"
            ],
            "videoCapabilities": [
              {
                "contentType": "video/mp4; codecs=\"avc1.42E01E\"",
                "robustness": ""
              }
            ]
          }
        ]
      },
      "system-1-bogus": {
        "keySystem": "com.widevine.alpha",
        "configurations": [
          {
            "initDataTypes": [
              "cenc"
            ],
            "distinctiveIdentifier": "not-allowed",
            "persistentState": "not-allowed",
            "sessionTypes": [
              "temporary"
            ],
            "videoCapabilities": [
              {
                "contentType": "video/mp4; codecs=\"avc1.42E01E\"",
                "robustness": "BOGUS"
              }
            ]
          }
        ]
      },
      "system-1-keyids": {
        "keySystem": "com.widevine.alpha",
        "configurations": [
          {
            "initDataTypes": [
              "keyids"
            ],
            "distinctiveIdentifier": "not-allowed",
            "persistentState": "not-allowed",
            "sessionTypes": [
              "temporary"
            ],
            "videoCapabilities": [
              {
                "contentType": "video/mp4; codecs=\"avc1.42E01E\"",
                "robustness": ""
              }
            ]
          }
        ]
      },
      "system-2-baseline": {
        "keySystem": "com.microsoft.playready",
        "configurations": [
          {
            "initDataTypes": [
              "cenc"
            ],
            "distinctiveIdentifier": "not-allowed",
            "persistentState": "not-allowed",
            "sessionTypes": [
              "temporary"
            ],
            "videoCapabilities": [
              {
                "contentType": "video/mp4; codecs=\"avc1.42E01E\"",
                "robustness": ""
              }
            ]
          }
        ]
      },
      "system-2-bogus": {
        "keySystem": "com.microsoft.playready",
        "configurations": [
          {
            "initDataTypes": [
              "cenc"
            ],
            "distinctiveIdentifier": "not-allowed",
            "persistentState": "not-allowed",
            "sessionTypes": [
              "temporary"
            ],
            "videoCapabilities": [
              {
                "contentType": "video/mp4; codecs=\"avc1.42E01E\"",
                "robustness": "BOGUS"
              }
            ]
          }
        ]
      },
      "system-2-keyids": {
        "keySystem": "com.microsoft.playready",
        "configurations": [
          {
            "initDataTypes": [
              "keyids"
            ],
            "distinctiveIdentifier": "not-allowed",
            "persistentState": "not-allowed",
            "sessionTypes": [
              "temporary"
            ],
            "videoCapabilities": [
              {
                "contentType": "video/mp4; codecs=\"avc1.42E01E\"",
                "robustness": ""
              }
            ]
          }
        ]
      },
      "system-3-baseline": {
        "keySystem": "com.apple.fps",
        "configurations": [
          {
            "initDataTypes": [
              "cenc"
            ],
            "distinctiveIdentifier": "not-allowed",
            "persistentState": "not-allowed",
            "sessionTypes": [
              "temporary"
            ],
            "videoCapabilities": [
              {
                "contentType": "video/mp4; codecs=\"avc1.42E01E\"",
                "robustness": ""
              }
            ]
          }
        ]
      },
      "system-3-bogus": {
        "keySystem": "com.apple.fps",
        "configurations": [
          {
            "initDataTypes": [
              "cenc"
            ],
            "distinctiveIdentifier": "not-allowed",
            "persistentState": "not-allowed",
            "sessionTypes": [
              "temporary"
            ],
            "videoCapabilities": [
              {
                "contentType": "video/mp4; codecs=\"avc1.42E01E\"",
                "robustness": "BOGUS"
              }
            ]
          }
        ]
      },
      "system-3-keyids": {
        "keySystem": "com.apple.fps",
        "configurations": [
          {
            "initDataTypes": [
              "keyids"
            ],
            "distinctiveIdentifier": "not-allowed",
            "persistentState": "not-allowed",
            "sessionTypes": [
              "temporary"
            ],
            "videoCapabilities": [
              {
                "contentType": "video/mp4; codecs=\"avc1.42E01E\"",
                "robustness": ""
              }
            ]
          }
        ]
      },
      "scheme-cenc": {
        "keySystem": "org.w3.clearkey",
        "configurations": [
          {
            "initDataTypes": [
              "cenc"
            ],
            "distinctiveIdentifier": "not-allowed",
            "persistentState": "not-allowed",
            "sessionTypes": [
              "temporary"
            ],
            "videoCapabilities": [
              {
                "contentType": "video/mp4; codecs=\"avc1.42E01E\"",
                "encryptionScheme": "cenc"
              }
            ]
          }
        ]
      },
      "scheme-cbcs": {
        "keySystem": "org.w3.clearkey",
        "configurations": [
          {
            "initDataTypes": [
              "cenc"
            ],
            "distinctiveIdentifier": "not-allowed",
            "persistentState": "not-allowed",
            "sessionTypes": [
              "temporary"
            ],
            "videoCapabilities": [
              {
                "contentType": "video/mp4; codecs=\"avc1.42E01E\"",
                "encryptionScheme": "cbcs"
              }
            ]
          }
        ]
      },
      "scheme-bogus": {
        "keySystem": "org.w3.clearkey",
        "configurations": [
          {
            "initDataTypes": [
              "cenc"
            ],
            "distinctiveIdentifier": "not-allowed",
            "persistentState": "not-allowed",
            "sessionTypes": [
              "temporary"
            ],
            "videoCapabilities": [
              {
                "contentType": "video/mp4; codecs=\"avc1.42E01E\"",
                "encryptionScheme": "bogus"
              }
            ]
          }
        ]
      },
      "robustness-SW_SECURE_CRYPTO": {
        "keySystem": "com.widevine.alpha",
        "configurations": [
          {
            "initDataTypes": [
              "cenc"
            ],
            "distinctiveIdentifier": "not-allowed",
            "persistentState": "not-allowed",
            "sessionTypes": [
              "temporary"
            ],
            "videoCapabilities": [
              {
                "contentType": "video/mp4; codecs=\"avc1.42E01E\"",
                "robustness": "SW_SECURE_CRYPTO"
              }
            ]
          }
        ]
      },
      "robustness-SW_SECURE_DECODE": {
        "keySystem": "com.widevine.alpha",
        "configurations": [
          {
            "initDataTypes": [
              "cenc"
            ],
            "distinctiveIdentifier": "not-allowed",
            "persistentState": "not-allowed",
            "sessionTypes": [
              "temporary"
            ],
            "videoCapabilities": [
              {
                "contentType": "video/mp4; codecs=\"avc1.42E01E\"",
                "robustness": "SW_SECURE_DECODE"
              }
            ]
          }
        ]
      }
    },
    "controls": {}
  }
]

One collector runs per invocation. Results and JSON select this signal’s fields; any companions execute in the same collector.

Generated source manifest lists runtime files, fixture URLs and content digests for this build. The Source tab provides a copyable console sample.

Run and edit locally

From the repository root, start the Astro app, then open /signals/media.drm-capabilities. Edit the collector source and reload the page to load its new build.

pnpm run dev:web

In a browser module served by this repository’s Vite graph:

import { createCollector } from "/core/collect"
import { measurementModule } from "/core/signals/video/drm-capabilities"

const signal = measurementModule
const collector = createCollector()
const suite = { signals: [signal] }
// Invoke only after an explicit user action.
const result = await collector.collect(suite, { allowedPromptIds: ["media.drm-capabilities"] })

Reuse the collector owner for repeated calls so collection can enforce cleanup. This returns the collector’s raw result; app/signals/projection.ts selects the retained fields shown on this page.

rg -n 'measurementModule' core app tests
pnpm run check
pnpm run test tests/unit/app/focused-projection.test.ts