MP4GetTrackType

Langue: en

Version: 172566 (fedora - 06/07/09)

Section: 3 (Bibliothèques de fonctions)

Sommaire

NAME

MP4GetTrackType - Get the track type

SYNTAX

#include <mp4.h>

const char* MP4GetTrackType(
       MP4FileHandle hFile,

       MP4TrackId trackId

)

ARGUMENTS

hFile
Specifies the mp4 file to which the operation applies.
trackId
Specifies the track for which the type is desired.

RETURN VALUES

Upon success, a string that indicates the track type. Upon an error, NULL.

DESCRIPTION

MP4GetTrackType gets the type of the track with the specified track id.

Note: the library does not provide a MP4SetTrackType function, the track type needs to be specified when the track is created, e.g. MP4AddSystemsTrack(MP4_OCI_TRACK_TYPE).

Known track types are:

       MP4_OD_TRACK_TYPE               "odsm"
        MP4_SCENE_TRACK_TYPE    "sdsm"
        MP4_AUDIO_TRACK_TYPE    "soun"
        MP4_VIDEO_TRACK_TYPE    "vide"
        MP4_HINT_TRACK_TYPE             "hint"
        MP4_CLOCK_TRACK_TYPE    "crsm"
        MP4_MPEG7_CLOCK_TYPE    "m7sm"
        MP4_OCI_TRACK_TYPE              "ocsm"
        MP4_IPMP_TRACK_TYPE             "ipsm"
        MP4_MPEGJ_TRACK_TYPE    "mjsm"

SEE ALSO

MP4(3)