MP4 - Online Linux Manual PageSection : 3
Updated : Version 0.9
Source : Cisco Systems Inc.
Note : MP4 File Format Library

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NAMEMP4GetTrackESConfiguration − Get the elementary stream (ES) configuration of a track

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SYNTAX#include <mp4.h> void MP4GetTrackESConfiguration(
MP4FileHandle hFile,
MP4TrackId trackId
u_int8_t** ppConfig,
u_int32_t* pConfigSize
)

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ARGUMENTShFile  Specifies the mp4 file to which the operation applies. trackId  Specifies the track for which the ES configuration is desired. ppConfig  Specifies a pointer to a pointer variable that will be given the address of the configuration information. pConfigSize  Specifies a pointer to a variable to hold the size of the ES configuration information.

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

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DESCRIPTIONMP4GetTrackESConfiguration returns the elementary stream (ES) configuration of the specified track in the mp4 file. This information is codec specific and contains the configuration necessary for the given codec to decode the samples in the track. Caveat: the returned block of memory has been malloc'd. The caller may safely modify the value without effecting the library, but the caller takes responsiblity for free'ing the memory.

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SEE ALSOMP4(3) 0

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