[RTCEncodedVideoFrame-metadata.https.html]
  [[VP8\] setMetadata() carries over codec-specific properties]
    expected: FAIL

  [[VP8\] constructor carries over codec-specific properties]
    expected: FAIL

  [[VP8\] constructor with metadata carries over codec-specific properties]
    expected: FAIL

  [[VP8\] constructor without metadata does not carry over modified metadata ]
    expected: FAIL