{
  "name": "webm-transparency",
  "description": "WebM VP9 render with transparent background (alpha channel). Validates the full WebM pipeline: PNG capture, VP9 encoding with yuva420p, and alpha_mode=1 metadata.",
  "tags": ["webm", "transparency", "fast"],
  "minPsnr": 30,
  "maxFrameFailures": 2,
  "minAudioCorrelation": 0.0,
  "maxAudioLagWindows": 120,
  "renderConfig": {
    "fps": 30,
    "format": "webm",
    "workers": 1
  }
}