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MP4GetTrackAudioType
Langue: en
Version: 162311 (fedora - 05/07/09)
Section: 3 (Bibliothèques de fonctions)
NAME
MP4GetTrackAudioType - Get the encoding type of an audio track
SYNTAX
#include <mp4.h>
u_int8_t MP4GetTrackAudioType(
MP4FileHandle hFile,
MP4TrackId trackId
)
ARGUMENTS
- hFile
- Specifies the mp4 file to which the operation applies.
- trackId
- Specifies the track for which the audio type is desired.
RETURN VALUES
Upon success, the audio type of the track. Upon error, MP4_INVALID_AUDIO_TYPE is returned.
DESCRIPTION
MP4GetTrackAudioType returns the encoding type of the specified audio track in the mp4 file.
Known audio encoding types are:
MP4_MPEG1_AUDIO_TYPE
MPEG-1 Audio Layers I, II, & III
MP4_MPEG2_AUDIO_TYPE
MPEG-2 low bitrate extensions to MPEG-1 Audio
MP4_MP3_AUDIO_TYPE is an alias for this value
MP4_MPEG2_AAC_MAIN_AUDIO_TYPE
MPEG-2 AAC Main profile
MP4_MPEG2_AAC_LC_AUDIO_TYPE
MPEG-2 AAC Low Complexity profile
MP4_MPEG2_AAC_SSR_AUDIO_TYPE
MPEG-2 AAC SSR profile
MP4_MPEG4_AUDIO_TYPE
MPEG-4 Audio, includes MPEG-4 extensions to AAC
MP4_PRIVATE_AUDIO_TYPE
User private type
SEE ALSO
MP4(3) MP4AddAudioTrack(3)
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