Video encoding

media.encoding

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Results

Full evidence

Signal properties and values
Property	Value
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JSON

Selected signal results for external comparison. Field statuses, controls and exact values are retained.

No run export is available.

Source

Source is not connected yet.

// Test source pending.

Definition

Encodes owned frames with bounded codec configurations and retains exact chunks.

Find it in the repository

Collector source: core/signals/video/encoding.ts
Export: measurementModule · Signal object
Field definitions: core/definitions/media/encoding.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.encoding
Collector: media.encoding
API / surface: core/signals/video/encoding.ts
Timeout: 2750 ms
Companion signals: None
Fixture inputs: Inline owned corpora (listed below)

core/fixtures/media/encoding.ts · sha256:704346a3fe365612612d95342836c36a2692a9cf048db14078445cafeee77dbd

Exact request inputs

[
  {
    "key": "media.encoding.responses",
    "inputs": {
      "query-vp8": {
        "codec": "vp8",
        "width": 64,
        "height": 64,
        "bitrate": 100000,
        "framerate": 10,
        "latencyMode": "quality",
        "bitrateMode": "variable",
        "hardwareAcceleration": "no-preference",
        "alpha": "discard"
      },
      "query-vp9": {
        "codec": "vp09.00.10.08",
        "width": 64,
        "height": 64,
        "bitrate": 100000,
        "framerate": 10,
        "latencyMode": "quality",
        "bitrateMode": "variable",
        "hardwareAcceleration": "no-preference",
        "alpha": "discard"
      },
      "query-avc": {
        "codec": "avc1.42E01E",
        "width": 64,
        "height": 64,
        "bitrate": 100000,
        "framerate": 10,
        "latencyMode": "quality",
        "bitrateMode": "variable",
        "hardwareAcceleration": "no-preference",
        "alpha": "discard",
        "avc": {
          "format": "annexb"
        }
      },
      "query-realtime": {
        "codec": "vp8",
        "width": 64,
        "height": 64,
        "bitrate": 100000,
        "framerate": 10,
        "latencyMode": "realtime",
        "bitrateMode": "variable",
        "hardwareAcceleration": "no-preference",
        "alpha": "discard"
      },
      "query-constant": {
        "codec": "vp8",
        "width": 64,
        "height": 64,
        "bitrate": 100000,
        "framerate": 10,
        "latencyMode": "quality",
        "bitrateMode": "constant",
        "hardwareAcceleration": "no-preference",
        "alpha": "discard"
      },
      "query-hardware": {
        "codec": "vp8",
        "width": 64,
        "height": 64,
        "bitrate": 100000,
        "framerate": 10,
        "latencyMode": "quality",
        "bitrateMode": "variable",
        "hardwareAcceleration": "prefer-hardware",
        "alpha": "discard"
      },
      "query-unknown": {
        "codec": "vp8",
        "width": 64,
        "height": 64,
        "bitrate": 100000,
        "framerate": 10,
        "latencyMode": "quality",
        "bitrateMode": "variable",
        "hardwareAcceleration": "no-preference",
        "alpha": "discard",
        "introspectionUnknownMember": 17
      },
      "query-invalid": {
        "codec": "introspection-invalid",
        "width": 64,
        "height": 64,
        "bitrate": 100000,
        "framerate": 10,
        "latencyMode": "quality",
        "bitrateMode": "variable",
        "hardwareAcceleration": "no-preference",
        "alpha": "discard"
      },
      "encode-baseline": {
        "selection": "baseline",
        "frames": 3,
        "timestampsUs": [
          0,
          100000,
          200000
        ],
        "keyframe": 0
      },
      "encode-variant": {
        "selection": "variant",
        "frames": 3,
        "timestampsUs": [
          0,
          100000,
          200000
        ],
        "keyframe": 0
      },
      "encode-other-codec": {
        "selection": "other-codec",
        "frames": 3,
        "timestampsUs": [
          0,
          100000,
          200000
        ],
        "keyframe": 0
      }
    },
    "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.encoding. 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/encoding"

const signal = measurementModule
const collector = createCollector()
const suite = { signals: [signal] }
const result = await collector.collect(suite)

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