2026-06-02 16:24:45 -04:00
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// Key fixes applied:
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// 1. isInterlacedSource check: for progressive deltacast signals, skip yadif deinterlacer and use split only
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// - Before: yadif=mode=1:deint=1 on progressive input doubled framerate (59.94->119.88 fps)
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// - After: progressive signals use '[0:v]split=2[vhi][vlo]' without yadif
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// 2. currentFps calculated from framesReceived / elapsedSec instead of ffmpeg's running average
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// - Before: used ffmpeg stderr fps= which is encoding speed average (starts at ~28fps)
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// - After: calculates actual capture rate from wall-clock time
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// 3. recordingStartedAt timestamp set when recording starts, cleared when stopping
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