Technical Summary
Multimedia applications often suffer from packet losses in IP
networks. In order to get a reasonable degree of quality in case of
packet losses, it is necessary to have loss concealment mechanisms at
the decoder. Video loss concealment is a range of techniques to mask
the effects of packet loss in video communications.
In some applications, reporting the information of receivers applying
video loss concealment could give monitors or senders useful
information on application QoE. One example is no-reference video
quality evaluation. Video probes located upstream from the video
endpoint or terminal may not see loss occurring between the probe and
the endpoint, and may also not be fully aware of the specific loss
concealment methods being dynamically applied by the video endpoint.
Evaluating error concealment is important in the circumstance in
estimating the subjective impact of impairments.
This draft defines one new video loss concealment block type to
augment those defined in [RFC3611] and [RFC7294] for use in a range
of RTP video applications. The metrics defined in this draft belong
to the class of transport-related terminal metrics defined in
[RFC6792].
Working Group Summary
The XRBLOCK WG has a small but dedicated number of contributors. The I-D was attentively reviewed and improved by comments provided by contributors. There is strong consensus to advance the document to the IESG
Document Quality
Representatives from a couple of vendors reported on plans to implement. The document was reviewed by the SDP and PMOL directorates, and comments made by these were addressed and changes incorporated.
Personnel
Dan Romascanu is the Shepherd, Alissa Cooper is the Responsible AD.