The second header in a Kate stream holds Vorbis comments in the same format as a Vorbis or Theora stream, apart from the 0x81 packet type byte, the Kate signature, and a zero byte at the start of the packet.

As for Vorbis, note that the user comments are not necessarily NUL terminated.

Note that, as Theora, Kate does not add a framing bit to the packet.

Refer to the documentation for Vorbis for detailed information about the format of Vorbis comments.