Function buildSmartCutHeadSegmentArgs

buildSmartCutHeadSegmentArgs(
    inputPath: string,
    outputPath: string,
    encodeStart: number,
    encodeEnd: number,
    frameRateRational: string,
): string[]
Builds ffmpeg arguments for the re-encoded head segment of an encode-then-copy plan. Output is video-only MP4 with PTS rebased to zero. Audio is handled separately.
Parameters
- inputPath: string
  Source media path.
- outputPath: string
  Head segment .mp4 output path.
- encodeStart: number
  Trim start in seconds within the source file.
- encodeEnd: number
  End of the head segment — the next keyframe at/after encodeStart (exclusive).
- frameRateRational: string
  Target fps as an ffprobe-style rational.
Returns string[]
ffmpeg argument vector.
- Defined in lib/youtube-import/smart-cut.ts:615