NAME
MP4SetTrackTimeScale - Set the time scale of a track
SYNTAX
#include <mp4.h>
bool MP4SetTrackTimeScale(
MP4FileHandle hFile,
MP4TrackId trackId,
u_int32_t timeScale
)
ARGUMENTS
hFile Specifies the mp4 file to which the operation applies.
trackId
Specifies the track to which the operation applies.
timeScale
Specifies the desired time scale for the track.
RETURN VALUES
Upon success, true (1). Upon an error, false (0).
DESCRIPTION
MP4SetTrackTimeScale sets the time scale of the specified track in the
mp4 file. The time scale determines the number of clock ticks per
second for this track.
Typically this value is set once when the track is created. However
this call can be used to modify the value if that is desired. Since
track sample durations are expressed in units of the track time scale,
any change to the time scale value will effect the real time duration
of the samples.
SEE ALSO
MP4(3)