MP4ReadRtpHint - Read an RTP hint
u_int16_t* pNumPackets = NULL
hFile Specifies the mp4 file to which the operation applies.
Specifies the hint track to which the operation applies.
Specifies which hint sample is to be read. Caveat: the first
sample has id 1 not 0.
Pointer to variable that will be hold the number of packets in
Upon success, true (1). Upon an error, false (0).
MP4ReadRtpHint reads the specified hint sample from the specified hint
track and enables subsequent calls to MP4ReadRtpPacket() to read the
individual RTP packets associated with this hint. If desired, the
number of RTP packets associated with this hint is returned.
Note that a hint track sample is just like any other track sample. I.e
MP4ReadSample(), MP4GetSampleSize(), MP4GetSampleTime(), etc. are all
valid. The RTP specific functions are provided to interpret the
information contain in the hint track samples that give instructions on
how to form the actual RTP packets.