Improved Video Quality Measurement Using MOS Predictor Metric

In a previous blog post, we examined the performance of Netflix’s new video quality metric, Video Multimethod Assessment Fusion (VMAF), for its ability – in comparison with the long-time standard video quality metric, PSNR – to predict subjective test results, … Read More

How Well Does Netflix’s VMAF Metric Capture Video Quality?

Last year, Netflix published a blog post titled “Toward a Practical Perceptual Video Quality Metric” announcing their development of a new video quality metric, termed Video Multimethod Assessment Fusion (VMAF), that they claim better reflects human perception of video quality … Read More

Modeling Levels in Content-Adaptive Encoding

Co-Authored By Dane Kottke In a previous blog post, we described the challenges of adaptive bitrate (ABR) streaming, where OTT video content providers must encode and store each source video at multiple frame resolutions and bitrates, with the collection of … Read More

Improving Adaptive Bitrate Streaming via EuclidIQ’s Content-Adaptive Encoding

Co-Authored By Dane Kottke In their quest to provide the best viewing experience at reasonable costs, OTT video distribution companies have traditionally relied on adaptive bitrate (ABR) streaming. In ABR streaming, each source video is scaled to multiple frame resolutions … Read More

Getting on the HEVC Train

Apple’s recent announcement at its Worldwide Developer Conference that it would support HEVC/H.265 in its next versions of iOS (iOS11) and macOS (High Sierra) resulted in a flurry of excited posts within the video compression community. Such a reaction was … Read More

Preprocessor, Postprocessor or Encoder

We are constantly asked whether our IQ264 product is an encoder, a preprocessor, or a postprocessor. The response? None of the above. It is a plugin that is integrated with an encoder, currently x264. But what is the difference between … Read More

Thoughts on Netflix’s Move Toward Perceptual Video Quality Metrics

Netflix recently published a blog post titled “Toward a Practical Perceptual Video Quality Metric” that announced their development of a new video quality metric, termed Video Multimethod Assessment Fusion (VMAF), that they claim better reflects human perception of video quality … Read More

Subjective Test Methodology Design

As adoption of HEVC has slowed, companies are taking another look at what additional efficiencies can be gained with their existing H.264-compliant encoders.  Evaluating the benefits of different encoding algorithms, to determine how many bits can be saved while maintaining … Read More

Subjective Testing Part 4: Post-Test Analysis

Introduction EuclidIQ’s blog series on subjective testing has presented a “practical” subjective test methodology that we’ve designed to produce meaningful results while not being prohibitive in terms of time or cost.  In Part 1, we detailed the general test set-up, … Read More

Netflix and the Art of Content-Adaptive Encoding

When Netflix speaks, everyone in the streaming video industry tends to listen. For instance, in a recent blog post titled “Per-Title Encode Optimization,” Netflix announced that it is re-encoding its entire collection of videos using bitrates appropriate to the content in each particular video. This is a … Read More