In a SIP video call, the video stream receiver responds with the capabilities of its decoder.
A parameter that defines this profile-level-id. The following is an example of a profile level id parameter value: 428014
RFC 6184 defines that as
Base 16 [7] (hexadecimal) representation of the following three bytes are indicated in the set of NAL sequence parameters in 1 : 1) profile_idc, 2) byte, here called profile-iop, consisting of constraint_set0_flag, constraint_set1_flag, constraint_set2_flag, constraint_set3_flag, constraint_set4_flag constra reserved_zero_2bits in bit is the order of significance, starting with the most significant bit, and 3) level_idc.
Accordingly, the following parameters can be identified from the value of the example:
- profile_idc 42
- profile-iop 82
- level-idc 14
How to associate these numbers with profiles and levels for h264?