功能和质量指标数据集用于DASH中的视频编码
Francisco Micó-Enguídanos1, Andoni Salcedo-Navarro2, Miguel Garcia-Pineda3
1Universitat de València, Departament d'Informàtica, Av. de la Universitat s/n, Burjassot, 46100, València, Spain. francisco.m.mico@uv.es.
Scientific data
|June 26, 2024
概括
本研究介绍了使用Dynamic Adaptive Streaming over HTTP (DASH) 进行H.264视频流媒体的数据集. 数据集捕获各种分辨率和压缩级别的视频功能和质量指标,以提高体验质量.
科学领域:
- 计算机科学 计算机科学
- 多媒体工程多媒体工程
背景情况:
- H.264编码的视频主导了互联网流量.
- 通过HTTP进行动态自适应流 (DASH) 是一种流行的视频流技术.
- 基于接收器的限制,DASH优化了视频传输的体验质量 (QoE).
研究的目的:
- 创建用于分析DASH.中使用的H.264视频段的全面数据集.
- 从多个分辨率的视频段中提取时空和颜色特征.
- 收集不同压缩级别和分辨率编码的视频段的质量指标.
主要方法:
- 从4065个两秒钟的视频段中生成数据集.
- 从分段中提取颜色,空间和时间特征,分辨率为240p,360p,480p,720p,1080p,1440p和4K.
- 记录了不同分辨率的不同压缩级别编码的部分的质量指标.
主要成果:
- 创建了两个不同的数据集,详细介绍了视频段的特征.
- 功能提取涵盖了广泛的分辨率,对于自适应流分析至关重要.
- 质量指标提供了对压缩和分辨率对视频质量影响的见解.
结论:
- 开发的数据集为视频流优化研究提供了宝贵的资源.
- 对这些数据集的分析可以提高DASH流媒体体验的质量.
- 了解功能变化和质量指标对于高效的H.264视频交付至关重要.
相关概念视频
Pulse amplitude and quality
1.7K
Pulse amplitude is a crucial indicator of cardiac health because it provides valuable insights into the strength of left ventricular contractions and the overall uniformity of blood circulation within the vasculature. The strength of the pulse is directly related to the force with which the heart contracts and the volume of blood being pumped.
A weak or absent pulse may indicate reduced cardiac output or poor left ventricular contraction, which can be signs of cardiovascular dysfunction or...
A weak or absent pulse may indicate reduced cardiac output or poor left ventricular contraction, which can be signs of cardiovascular dysfunction or...
1.7K
Downsampling
149
When considering a sampled sequence with zero values between sampling instants, one can replace it by taking every N-th value of the sequence. At these integer multiples of N, the original and sampled sequences coincide. This process, known as decimation, involves extracting every N-th sample from a sequence, thereby creating a more efficient sequence.
The Fourier transform of the decimated sequence reveals a combination of scaled and shifted versions of the original spectrum. This...
The Fourier transform of the decimated sequence reveals a combination of scaled and shifted versions of the original spectrum. This...
149
Quality Control
159
Quality control is one of the three cyclical quality assurance activities that help keep a system under statistical control. Typical quality control activities include creating quality control charts, conducting proficiency testing, and documenting and archiving results.
Quality control helps track data, visualize trends, and identify variations, making it easier to detect deviations that may affect the accuracy of an analysis. One way to do this is by generating a quality control chart, which...
Quality control helps track data, visualize trends, and identify variations, making it easier to detect deviations that may affect the accuracy of an analysis. One way to do this is by generating a quality control chart, which...
159
Uniform Depth Channel Flow
67
Uniform depth channel flow keeps fluid depth consistent along channels such as irrigation canals. In natural channels, such as rivers, approximate uniform flow is often assumed. This condition occurs when the channel’s bottom slope matches the energy slope, balancing potential energy lost from gravity with head loss due to shear stress. This balance prevents depth changes along the channel length, resulting in a steady, uniform flow.Uniform flow in open channels with a constant cross-section...
67
Quality Assurance
121
Quality assurance is the overarching term used to describe the activities employed to ensure the proper performance of a system. These activities can be classified into three categories: quality control, quality assessment, and internal corrective measures. Typically, these activities work cyclically: quality control is performed before and during the analysis, while quality assessment occurs during and after the investigation. Internal corrective measures are implemented based on the findings...
121
Data Reporting and Recording
4.6K
Reporting and recording are crucial in data documentation. The timely, thorough, and accurate documentation of facts is essential when recording patient data. Failure to record findings during an assessment or interpretation of a problem will result in loss of information and make the patient document unreliable. The reader is left with general impressions if the information is not specific. A recording is documenting data of the individual's health information in a traceable, secure, and...
4.6K


