scope:

This Recommendation describes recommended objective models for non-intrusive monitoring of the video quality of IP-based video services based on the decoded video frames and packet-header. Some types of models also utilize the reference video or bitstream information. This Recommendation addresses six application areas:

• [ITU-T J.343.1] specifies Hybrid-NRe models
• [ITU-T J.343.2] specifies Hybrid-NR models
• [ITU-T J.343.3] specifies Hybrid-RRe models
• [ITU-T J.343.4] specifies Hybrid-RR models
• [ITU-T J.343.5] specifies Hybrid-FRe models
• [ITU-T J.343.6] specifies Hybrid-FR models

[ITU-T J.343.1] includes two models, [ITU-T J.343.2] includes one model, [ITU-T J.343.3] includes one model that operates at multiple side channel bandwidths to transmit the reduced reference information, [ITU-T J.343.4] includes one model that operates at multiple side channel bandwidths to transmit the reduced reference information, [ITU-T J.343.5] includes two models and [ITU-T J.343.6] includes two models.

All of these models predict video quality in terms of mean opinion score (MOS), for example on a five-level absolute category rating (ACR) scale (see [ITU-T P.910] or [ITU-T P.913]).