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Man Pages


Manual Reference Pages  -  MP4GETTRACKAUDIOTYPE (3)

NAME

MP4GetTrackAudioType - Get the encoding type of an audio track

CONTENTS

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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Cisco Systems Inc. MP4 (3) Version 0.9

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