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James
49281a5c17
The v0.6.39 fix added -r <fps> to the multi-chunk concat ffmpeg invocation but didn't reach the single-chunk pass-through path, which is taken when totalFrames * fpsDen / fpsNum fits in one chunk. Result: 1-chunk renders shipped with fractional r_frame_rate (e.g. 359/12) while multi-chunk renders shipped with exact 30/1. Single-chunk path now goes through the same -r <fps> + -c copy ffmpeg invocation as the concat path, ensuring uniform exact r_frame_rate metadata across all chunk-count configurations. Adds a regression test exercising the 1-chunk path and asserting r_frame_rate === "<fpsNum>/<fpsDen>" exact.