NAME
MP4SetTrackEditMediaStart - Set the media start time of a track edit
segment
SYNTAX
#include <mp4.h>
bool MP4SetTrackEditMediaStart(
MP4FileHandle hFile,
MP4TrackId trackId,
MP4EditId editId,
MP4Timestamp mediaStartTime
);
ARGUMENTS
hFile Specifies the mp4 file to which the operation applies.
trackId
Specifies the track to which the operation applies.
editId Specifies the edit segment to which the operation applies.
Caveat: the first edit has id 1 not 0.
mediaStartTime
Species the new value for the media start in track time scale
units.
RETURN VALUES
Upon success, true (1). Upon an error, false (0).
DESCRIPTION
MP4SetTrackEditMediaStart sets the media start time of the specified
edit segment from the specified track in the track time scale units.
See MP4ConvertToTrackTimestamp() for how to map this value from another
time scale.
Note that this differs from the edit segment start time. For example:
EditId Start MediaStart Duration
1 0 15 30
2 30 120 20
3 50 3000 10
SEE ALSO
MP4(3) MP4GetTrackEditMediaStart(3)