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Workflow


VQL Workflow Variants

SOB Display Screenshot

Frames Continuity Test
Long Exposure Photo


MCAVS UHD Version

MPCAVS
Multi-purpose Dynamic Chart with AV Sync

AUD2 Audio Test

Audio Levels Test
2.0 and 5.1 versions


VQL
VideoQ Library
Sophisticated Audio and Video Test Patterns


Learn about VideoQ suite of HDR Test Patterns:
HDR Test Patterns Training Presentation

Sophisticated static and dynamic test patterns, uncompressed or compressed video and audio files

  • VQL Instantly reveals your video display, codec, scaler, converter or other video device performance
  • VQL test patterns cover all 3 levels of video QA/QC:
    • Instant visual-aural Quality Estimation
    • Objective Measurements of video and audio performance
    • Fully automated (unattended) Quality Control
  • VQL features:
    • Compatibility with all commonly used software or hardware codecs and media players
    • VideoQ VQV / VQMA / VQTS / VQDM compatible tests
    • Wide range of video frame sizes: from 192x108 to 4096x3072
    • Variety of bit rates up to uncompressed 4:4:4 4K @60 fps, 48 bit per pixel, 16 bit per component
    • Variety of video and audio formats, color spaces and level schemes, up to 4K/UHD HDR
    • All test patterns remain suitable for accurate measurements even after low bitrate coding, heavy scaling and/or cropping, e.g. after down-conversion for mobile devices
  • Standard, custom and semi-custom tests for development labs, content processing facilities, CDN systems,
    software developers and high volume manufacturers

========= Target Applications =========

  • Engineering, Research & Development of video systems and devices
  • QA/QC of broadcast, prosumer and consumer video systems with LAN/WAN, HDMI and/or SDI connectivity
  • CDN and IPTV systems QA/QC

========= VQL Test Categories =========

  • Universal Test Charts, including the most popular VQMPC (VideoQ Multi-Purpose Chart),
    available in a variety of formats, also as special AV Sync, HDR & 3D versions
  • Suite of sophisticated HD & UHD HDR Tests (PQ & HLG versions)
  • Levels and Colors Tests, including renown ColorSpaceExplorer™
  • Frame Rate Conversion, Interlace and Frame Cadence Tests
  • VQDM compatible AV Latency and AV Sync Tests, SD, HD & UHD versions
  • Compression Codecs Stress Tests, including renown StresTracker™ sequence
  • VQMA Analyzer compatible static and dynamic Tests, frame sizes from 720x480 to 4K
  • Basic Static Tests - Color Bars, Ramps, Sweeps, etc.
  • Audio Tests

========= VQL Customer Support =========

  • Technical Guidance and Tutorials
    • A comprehensive set of documentation and tutorials are provided to explain the use
      of each pattern or section within the complex charts
    • Guidance is given on how specific areas are used for monitor alignment, compression testing,
      linearity, color balance, frequency response, interlace testing, black level setup, etc.
  • Remote and on-site training
  • VQL based Advanced Test Suites are also available from GrayMeta and ISF