用于分辨率高达4K、可获取全比特流信息、通过可靠传送提供的流服务的视频质量评定 |
ITU-T 1204.3建议书描述了基于比特流的模式3视频质量模型,使用可靠传输(例如,基于传输控制协议(TCP)的超文本传输协议(HTTP)自适应流传输(HAS)、快速用户数据报协议互联网连接(QUIC))来监控流传输的视频质量。该估计值经过验证,适用于使用H.264、H.265或视频有效负载9型(VP9)编解码器编码的视频,适用于分辨率最高可达4K/超高清(UHD)的个人电脑显示器和电视(TV),并适用于分辨率最高可达2 560 × 1 440的智能手机和平板电脑显示器。
ITU-T P.1204.3系列建议书提供了与序列相关的(5秒至10秒)每秒视频质量评估。原则上,这些视频质量模型的每1秒输出均可与音频质量模型一起集成到视听质量,并与关于初始加载延迟和媒体播放停止事件信息一起用于最终的各会话模型输出,即集成的各会话质量评估(请参见ITU-T 1203,ITU-T 1203.2,ITU-T 1203.3等建议书)。
ITU-T P.1204.3建议书是与视频质量专家组(VQEG)合作编制。
ITU-T P.1204.3涉及三个应用领域:– 与固定网络视频流相同的大屏幕展示, – 智能手机等手持设备上的移动流; – 平板类设备演示。本建议书包括第8.2节所公布供最终预测使用的树形结构的电子附件。 |
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Citation: |
https://handle.itu.int/11.1002/1000/14156 |
Series title: |
P series: Telephone transmission quality, telephone installations, local line networks P.1200-P.1299: Models and tools for quality assessment of streamed media |
Approval date: |
2020-01-13 |
Provisional name: | P.NATS-ph2 |
Approval process: | AAP |
Status: |
In force |
Maintenance responsibility: |
ITU-T Study Group 12 |
Further details: |
Patent statement(s)
Development history
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ITU-T Supplement
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Title
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Status
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Summary
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Table of contents
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Download
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P Suppl. 10 (11/1988)
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Considerations relating to transmission characteristics for analogue handset telephones
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In force
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-
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here
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here
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P Suppl. 16 (11/1988)
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Guidelines for placement of microphones and loudspeakers in telephone conference rooms and for group audio terminals (GATs)
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In force
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-
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here
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here
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P Suppl. 20 (03/1993)
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Examples of measurements of handset receive-frequency responses: dependence on earcap leakage losses
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In force
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-
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here
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here
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P Suppl. 23 (02/1998)
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ITU-T coded-speech database
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In force
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here
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here
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here
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P Suppl. 24 (10/2005)
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Parameters describing the interaction with spoken dialogue systems
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In force
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here
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here
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here
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P Suppl. 25 (01/2011)
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Parameters describing the interaction with multimodal dialogue systems
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In force
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here
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here
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here
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P Suppl. 26 (09/2017)
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Scenarios for the subjective evaluation of audio and audiovisual multiparty telemeeting quality
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In force
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here
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here
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here
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P Suppl. 28 (09/2020)
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Considerations for the development of new QoS and QoE related objective models to be embedded in Recommendations prepared by ITU-T Study Group 12
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In force
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here
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here
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here
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P Suppl. 31 (01/2025)
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Subjective quality evaluation of audiovisual communication in videotelephony services
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In force
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here
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here
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here
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