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audio - Which mp4 timescale should I use for creating ...
https://stackoverflow.com/questions/63701584/which-mp4-timescale-should-i-use-for-creating-modifying-chapter-trak-atoms
Track duration A 32-bit integer that specifies the duration of this edit segment in units of the movie ’s time scale. Media time A 32-bit integer containing the starting time within the media of this edit segment (in media timescale units ). If this field is set to –1, it is an empty edit. The last edit in a track should never be an empty edit.
Timescale & Duration in MP4 Format - 简书
https://www.jianshu.com/p/93164682d1fa
Timescale & Duration in MP4 Format. mvhd (Movie Header) Time scale A time value that indicates the time scale for this movie—that is, the number of time units that pass per second in its time coordinate system. Duration A time value that indicates the duration of the movie in time scale units. Note that this property is derived from the movie’s tracks
mp4settimescale(3): Set time scale of movie - Linux man page
https://linux.die.net/man/3/mp4settimescale
Specifies the mp4 file to which the operation applies. timeScale Specifies the desired time scale for the movie. Return Values. Upon success, true (1). Upon an error, false (0). Description. MP4SetTimeScale sets the time scale of the mp4 file. The time scale is in the number of clock ticks per second.
Elements of the H.264 Video/AAC Audio MP4 Movie v2 0
https://www.cimarronsystems.com/wp-content/uploads/2017/04/Elements-of-the-H.264-VideoAAC-Audio-MP4-Movie-v2_0.pdf
Elements of the H.264 Video/AAC Audio MP4 Movie midnight, January 1, 1904) when the movie atom was created in coordinated universal time (UTC); set here to '0xCCF85C09'.-Modification Time—A 32-bit integer that specifies the calendar date and time (in seconds since midnight, January 1, 1904) when the movie atom was created in coordinated universal time
Time-scaling Audio: Introduction to MIDI and Computer ...
https://cecm.indiana.edu/361/rsn-timescalequantizeaudio.html
Time-scaling Audio in an Entire Clip. Select the clip to reveal its resize handles on either end of the clip. While holding down the option (or alt) key, drag one of the resize handles to time-scale the clip. You will see the time-scale clock cursor, and the …
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