1MP4(3)                      MP4 File Format Library                     MP4(3)
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NAME

6       MP4GetTrackESConfiguration  - Get the elementary stream (ES) configura‐
7       tion of a track
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SYNTAX

10       #include <mp4.h>
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12       void MP4GetTrackESConfiguration(
13            MP4FileHandle hFile,
14            MP4TrackId trackId
15            u_int8_t** ppConfig,
16            u_int32_t* pConfigSize
17       )
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ARGUMENTS

20       hFile  Specifies the mp4 file to which the operation applies.
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22       trackId
23              Specifies the track for which the ES configuration is desired.
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25       ppConfig
26              Specifies a pointer to a pointer variable that will be given the
27              address of the configuration information.
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29       pConfigSize
30              Specifies  a  pointer  to  a variable to hold the size of the ES
31              configuration information.
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RETURN VALUES

34       Upon success, *ppConfig will point to a malloc'd block of  memory  with
35       the  ES  configuration,  and  *pConfigSize will indicated the number of
36       bytes of the ES configuration. Upon error, *ppConfig will be NULL,  and
37       *pConfigSize will be 0.
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DESCRIPTION

40       MP4GetTrackESConfiguration  returns the elementary stream (ES) configu‐
41       ration of the specified track in the  mp4  file.  This  information  is
42       codec  specific  and contains the configuration necessary for the given
43       codec to decode the samples in the track.
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45       Caveat: the returned block of memory has been malloc'd. The caller  may
46       safely  modify  the value without effecting the library, but the caller
47       takes responsiblity for free'ing the memory.
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SEE ALSO

50       MP4(3)
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54Cisco Systems Inc.                Version 0.9                           MP4(3)