H264 metadata

Schema definition by version:

• Version 1

A UUID was made with the following command:

user@host:~# uuid -v3 ns:URL https://strawlab.org/h264-metadata/
0ba99cc7-f607-3851-b35e-8c7d8c04da0a
user@host:~# uuid -d 0ba99cc7-f607-3851-b35e-8c7d8c04da0a
encode: STR:     0ba99cc7-f607-3851-b35e-8c7d8c04da0a
        SIV:     15502186021171011326775270861741283850
decode: variant: DCE 1.1, ISO/IEC 11578:1996
        version: 3 (name based, MD5)
        content: 0B:A9:9C:C7:F6:07:08:51:33:5E:8C:7D:8C:04:DA:0A
                    (not decipherable: MD5 message digest only)