[avtext] Eric Rescorla's No Objection on draft-ietf-avtext-lrr-06: (with COMMENT)

[Eric Rescorla <[e-mail]>]

Eric Rescorla has entered the following ballot position for
draft-ietf-avtext-lrr-06: No Objection

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COMMENT:
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 S 2.1.
   In a layer refresh, however, other layers than the ones requested for
   refresh may still maintain dependency on earlier content of the
   stream.  This is the difference between a layer refresh and a Full

This "however" is hard to read because the entire previous graf
talks about layer refreshes.

All the diagrams in this section would be a lot easier to read
if they said that <- means "refers to"

 S 3.1
   The Feedback Control Information (FCI) for the Layer Refresh Request
   consists of one or more FCI entries, the content of which is depicted
   in Figure 5.  The length of the LRR feedback message MUST be set to
   2+3*N, where N is the number of FCI entries.

You should state that the length is in 32-bit words.


      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
      | RES     | TTID| TLID          | RES     | CTID| CLID (opt)    |
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+

How is CLID optional? It seems like it still has to be there,
unless I am misreading the text.


   Reserved (RES) (16 bits / 5 bits / 5 bits)  All bits SHALL be set to
      0 by the sender and SHALL be ignored on reception.

I would mention that this is three fields.