mp4(3)
NAME
MP4ConvertToTrackDuration - Convert a duration from a specified time
scale to the track time scale.
SYNTAX
#include <mp4.h>
- MP4Duration MP4ConvertToTrackDuration(
- MP4FileHandle hFile,
MP4TrackId trackId,
u_int64_t duration,
u_int32_t oldTimeScale - )
ARGUMENTS
hFile Specifies the mp4 file to which the operation applies.
- trackId
- Specifies the track from which the duration originates.
- duration
- Specifies the duration that is to be converted.
- oldTimeScale
- Specifies the time scale in ticks per second in which the duration is currently expressed.
RETURN VALUES
Upon success, the duration in the track time scale units. Upon error,
MP4_INVALID_DURATION.
DESCRIPTION
MP4ConvertToTrackDuration converts a duration such as a sample duration
from the specified time scale to the track time scale.