{
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  "recipe": "encoded-frames-v1-12-uniform-inclusive-native-resolution",
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  "width": 1200,
  "height": 700,
  "method": "Twelve evenly spaced decoded frame indices, including first and last. Native-resolution JPEGs from the encoded MP4; timestamps read from FFmpeg showinfo. No source rerendering. Frame indices are zero-based. Sparse samples do not establish continuous motion or capture every transition.",
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}