OptionalblBuffer length
The buffer length associated with the media object being requested. This value MUST be rounded to the nearest 100 ms. This key SHOULD only be sent with an object type of ‘a’, ‘v’ or ‘av’.
Integer milliseconds
OptionalbrBitrate
Integer
OptionalmtpMeasured mtp CMCD throughput
The throughput between client and server, as measured by the client and MUST be rounded to the nearest 100 kbps. This value, however derived, SHOULD be the value that the client is using to make its next Adaptive Bitrate switching decision. If the client is connected to multiple servers concurrently, it must take care to report only the throughput measured against the receiving server. If the client has multiple concurrent connections to the server, then the intent is that this value communicates the aggregate throughput the client sees across all those connections.
Integer kbps
OptionalnorNext object request
Relative path of the next object to be requested. This can be used to trigger pre-fetching by the CDN. This MUST be a path relative to the current request. This string MUST be URLEncoded. The client SHOULD NOT depend upon any pre-fetch action being taken - it is merely a request for such a pre-fetch to take place.
String
OptionalnrrNext range request
OptionaltbTop bitrate
The highest bitrate rendition in the manifest or playlist that the client is allowed to play, given current codec, licensing and sizing constraints.
Integer Kbps
CMCD Version 1