MP4Modify - Modify an existing mp4 file
const char* fileName,
u_int32_t verbosity = 0,
u_int32_t flags = 0
Specifies the path name of the file to be modified.
Specifies a bitmask of diagnostic details the library should
print to stdout during its functioning. See MP4SetVerbosity()
flags Currently ignored.
Upon successful completion the function returns a handle to the mp4
file. This is used in subsequent calls to the library to modify the
file. Upon an error, MP4_INVALID_FILE_HANDLE is returned.
MP4Modify is the first call that should be used when you want to modify
an existing mp4 file. It is roughly equivalent to opening a file in
Since modifications to an existing mp4 file can result in a sub-optimal
file layout, you may want to use MP4Optimize() after you have modified
and closed the mp4 file.