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MP4ConvertToTrackDuration
Langue: en
Version: 157140 (fedora - 05/07/09)
Section: 3 (Bibliothèques de fonctions)
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.
SEE ALSO
MP4(3) MP4ConvertFromTrackDuration(3)
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