ACR (Absolute Category Rating) Test Interface

ACR Test Interface is a useful tool to perform subjective video and/or audio quality testing.

Since quality is a subjective notion, subjective tests with human observers (listeners for audio) are the most precise way to measure quality. These tests require a special protocol to collect the votes of the observers (or listeners for audio), like ACR: Absolute Category Rating. Therefore, special software must be used to present the video files to the observers (or the audio files to the listeners) and collect their votes. That's the goal of ACR Test Interface which enables to:

  • Load and sort lists of video and/or audio files
  • Play video files in a window, in full screen mode or on a selectable device (video rendering card)
  • Play audio files on a selectable device (audio card)
  • Collect observers votes on a scale that you?ll define
  • Save observers votes in text and/or data files
  • Compute the mean subjective quality scores: MOS (Mean Opinion Score) and DMOS (Differential Mean Opinion Score)

 Screenshot #1 of Play and Capture
Screenshot #2 of Play and Capture

ACR Test Interface cuts cost of subjective testing: instead of using a dedicated hardware & software solution which is often expensive (20,000+ euros for uncompressed HD video quality testing), ACR Test Interface is a software only solution that enables you to use normal PCs. Note: A PC with RAID storage is advised to play uncompressed videos, especially for HD videos.

PDF Datasheet of ACR Test Interface (2 pages, English)