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Some historic background: I'm currently working with Wowza and attempting to decode the AMFPackets that come from the IMediaStream . The video packets will have a 5-byte header and the first packet is the codec configuration. So far in my inspecting the codec configuration matches the ISO/IEC 14496-15 AVCDecoderConfigurationRecord layout. However, I'm having trouble decoding the SPS and PPS units. The codec config packet including the 5-byte header: 17 00 00 00 00 01 4D 00 15 03 01 00 2F 67 4D 40 15 96 52 02 83 F6 02 A1 00 00 03 00 01 00 00 03 00 28 E0 60 03 0D 40 00 49 3E 7F 18 E3 03 00 18 6A 00 02 49 F3 F8 C7 0E D0 B1 68 90 01 00 04 68 EB 73 52 Flash/Wowza-specific first is the header: 17 00 00 00 00 17 = 10111 = H.264 K frame 00 = 0 = codec config packet 000000 = 0 = start time 0 Next is the AVCDecoderConfigurationRecord (hex = decimal): configurationVersion: 01 = 1 AVCProfileIndication: 4D = 77 (Main) profile_compatibility: 00 = 0 AVCLevelIndication: 15 = 21 (2.1) 6 bits reserved + lengthSizeMinusOne: 03 = 00000011 = 3 (4 bytes) 3 bits reserved + numOfSequenceParameterSets: 01 = 0001 = 1 sequenceParameterSetLength: 002F = (47 bytes) (SPS record 47 bytes long) numOfPictureParameterSets: 01 = 1 pictureParameterSetLength: 0004 = (4 bytes) (PPS record 4 bytes long) (end) SPS record (47 bytes): 67 4D 40 15 96 52 02 83 F6 02 A1 00 00 03 00 01 00 00 03 00 28 E0 60 03 0D 40 00 49 3E 7F 18 E3 03 00 18 6A 00 02 49 F3 F8 C7 0E D0 B1 68 90 Assuming this is a NAL unit containing SPS type: (Using ITU-T H.264 06/2011 7.3.1 NAL unit syntax ) First

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