Parse an ffprobe fractional frame rate string. e.g. "30000/1001" → { num:30000, den:1001, value:29.97 } e.g. "25/1" → { num:25, den:1, value:25 }
ParsedFrameRate object, or null if the string is absent/invalid.
Parse an ffprobe fractional frame rate string. e.g. "30000/1001" → { num:30000, den:1001, value:29.97 } e.g. "25/1" → { num:25, den:1, value:25 }