ClearView 9.4 – New Release with New Features for VMAF Metric
Campbell, California – September 22, 2021 – Video Clarity Inc., provider of market-leading audio and video quality measurement and analysis systems, today announced new capabilities for its ClearView line of video quality analyzers and software.
“No Enhancement Gain” Mode
Now available in the new ClearView 9.4, a unique feature of VMAF is to capture the visual gain from image enhancement operations applied to codecs which aim to improve the subjective quality perceived by viewers. The visual improvement achieved by the enhancement operations are reflected in the VMAF video quality scores. However, in codec evaluation, it is often desirable to measure the gain achievable from compression without taking into account the gain from image enhancement during pre-processing.
ClearView 9.4 provides the new measurement mode called VMAF NEG, “neg” stands for “no enhancement gain”. The NEG mode can be used for codec evaluation purposes to assess the pure effect coming from compression. The “default” mode is used to assess compression and enhancement combined.
An in-depth discussion of the new VMAF NEG mode can be found here:
Custom Score Models
User customized score models may be applied via alternative subjective data sets to “train” a new VMAF score model for certain picture content using different human subjective quality score data. Please review the following item https://github.com/Netflix/vmaf/blob/master/resource/doc/VMAF_Python_library.md
Faster Calculation Speeds
The VMAF metric in ClearView 9.4 has a faster calculation speed through its low-level code optimization, vectorization, and the introduction of frame-level multithreading. This provides a marked improvement in overall calculation speeds in ClearView for all formats of video.
About Video Clarity Inc.
Video Clarity Inc. provides video quality analysis systems which include quality lab applied video content recording and playback solutions for broadcasters, video-processing equipment manufacturers, and entertainment entities that must deliver high-quality video to multiple screens and continually measure the audio and video quality of their products and services. Propelled by market-leading technology, Video Clarity solutions have been adopted the worldwide by major media networks; leading broadcast-product manufacturers; and educational, government, and research organizations. Video Clarity was founded in 2003, with headquarters in Campbell, California, and distribution worldwide.
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Video Clarity Inc. Contact:
Adam Schadle, Vice President
Tel: +1 408 379 6952
Email: adams@videoclarity.com