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https://github.com/heygen-com/hyperframes.git
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Miguel Ángel
8408a44745
* fix(engine): tune VP9 cpu-used across render paths * fix: address VP9 review feedback
18 lines
1.0 KiB
JSON
18 lines
1.0 KiB
JSON
{
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"name": "Distributed: webm VP9",
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"description": "60-frame composition (2s @ 30fps) with text and a small rotating SVG icon, rendered to webm (VP9 + yuva420p). renderConfig.format=webm routes the distributed pipeline through libvpx-vp9 with closed-GOP keyint params (-g N -keyint_min N -auto-alt-ref 0 -cpu-used 4 by default) so per-chunk VP9 output can be losslessly stitched with `ffmpeg -f concat -c copy`. The in-process baseline renders to webm too (codec=vp9, pixelFormat=yuva420p), so the harness's PSNR comparison measures 'libvpx-vp9 chunked + concat' against 'libvpx-vp9 single-pass'. Closed-GOP forces more keyframes than open-GOP, which inflates per-chunk bitrate at constant CRF; PSNR threshold is set at 30 dB to absorb the resulting cross-mode drift without masking gross regressions.",
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"tags": ["distributed", "webm", "vp9", "sdr"],
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"minPsnr": 30,
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"maxFrameFailures": 0,
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"minAudioCorrelation": 0.9,
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"maxAudioLagWindows": 120,
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"renderConfig": {
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"fps": 30,
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"format": "webm",
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"chunkSize": 15
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}
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}
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