Search results
Results From The WOW.Com Content Network
The metric is based on initial work from the group of Professor C.-C. Jay Kuo at the University of Southern California. [1] [2] [3] Here, the applicability of fusion of different video quality metrics using support vector machines (SVM) has been investigated, leading to a "FVQA (Fusion-based Video Quality Assessment) Index" that has been shown to outperform existing image quality metrics on a ...
Average compression savings for 6 Mbps HD video using the x.264 codec when processed at −12 vB is 21.88%. Average compression savings for 16 Mbps Netflix 4K test suite video using the x.264 codec processed at −12 vB is 29.81%. The same Netflix test suite when compressed for immersive viewing (−18 vB) generates a 25.72% savings.
By default, the software adjusts video quality to allow for about 3 hours of streaming per gigabyte of data. The company says that tests showed this to be the best balance of data use and quality ...
In a subjective quality comparison conducted in 2014 featuring the reference encoders for HEVC (HM 15.0), MPEG-4 AVC/H.264 (JM 18.6), and VP9 (libvpx 1.2.0 with preliminary VP9 support), VP9, like H.264, required about two times the bitrate to reach video quality comparable to HEVC, while with synthetic imagery VP9 was close to HEVC. [36]
It is, therefore, a video quality model. PEVQ was benchmarked by the Video Quality Experts Group (VQEG) in the course of the Multimedia Test Phase 2007–2008. Based on the performance results, in which the accuracy of PEVQ was tested against ratings obtained by human viewers , PEVQ became part of the new International Standard.
Video quality is a characteristic of a video passed through a video transmission or processing system that describes perceived video degradation (typically compared to the original video). Video processing systems may introduce some amount of distortion or artifacts in the video signal that negatively impact the user's perception of the system.
Test cards typically contain a set of patterns to enable television cameras and receivers to be adjusted to show the picture correctly (see SMPTE color bars).Most modern test cards include a set of calibrated color bars which will produce a characteristic pattern of "dot landings" on a vectorscope, allowing chroma and tint to be precisely adjusted between generations of videotape or network feeds.
By late 2014, 4K content was becoming more widely available online, including on Apple TV, YouTube, Netflix, Hulu, and Amazon. [48] [49] By 2013, some UHDTV models were available to general consumers in the range of US$600. [50] [51] As of 2015, prices on smaller computer and television panels had dropped below US$400. [52]