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  • General
    • Oz Liveness and Biometry Key Concepts
      • Solution Architecture
      • Liveness, Face Matching, Black List Checks
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      • Hybrid Liveness
      • Oz API Key Concepts
      • Oz API vs. Oz API Lite
      • SaaS, On-premise, On-device: What to Choose
      • Oz Licensing Options
    • Integration Quick Start Guides
      • Server-Based Liveness
        • How to Integrate Server-Based Liveness into Your Web Application
        • How to Integrate Server-Based Liveness into Your Mobile Application
        • How to Check Your Media for Liveness without Oz Front End
      • On-Device Liveness
        • How to Integrate On-Device Liveness into Your Mobile Application
      • Face Matching
        • How to Add Face Matching of Liveness Video with a Reference Photo From Your Database
        • How to Add Photo ID Capture and Face Matching to Your Web or Mobile Application
  • Guides
    • Developer Guide
      • API
        • Oz API
          • Working with Oz System: Basic Scenarios
            • Authentication
            • Uploading Media
            • Liveness
            • Biometry (Face Matching)
            • Best Shot
            • Blacklist Check
              • Blacklist (Collection) Management in Oz API
            • Quantitative Results
            • Using a Webhook to Get Results
            • Single Request
            • Instant API: Non-Persistent Mode
          • System Objects
          • User Roles
          • Types of Analyses and What They Check
          • Rules of Assigning Analyses
          • Statuses in API
          • Media Tags
          • Metadata
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          • Oz API Postman Collections
          • Changelog
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          • Changelog
      • SDK
        • Oz Mobile SDK (iOS, Android, Flutter)
          • On-Device Mode
          • Android
            • Getting a License for Android SDK
              • Master License for Android
            • Adding SDK to a Project
            • Connecting SDK to API
            • Capturing Videos
            • Checking Liveness and Face Biometry
            • Customizing Android SDK
              • How to Restore the Previous Design after an Update
            • Android Localization: Adding a Custom or Updating an Existing Language Pack
            • Android SDK Methods and Properties
            • Changelog
          • iOS
            • Getting a License for iOS SDK
              • Master License for iOS
            • Adding SDK to a Client’s Mobile App
            • Connecting SDK to API
            • Capturing Videos
            • Checking Liveness and Face Biometry
            • Customizing iOS SDK Interface
              • How to Restore the Previous Design after an Update
            • iOS Localization: Adding a Custom or Updating an Existing Language Pack
            • iOS SDK Methods and Properties
            • Changelog
          • Flutter
            • How to Install and Use Oz Flutter Plugin
            • Flutter SDK Methods and Properties
            • Changelog
        • Oz Liveness Web SDK
          • Web Plugin
            • Adding the Plugin to Your Web Page
            • Launching the Plugin
              • Description of the on_complete Callback
              • Description of the on_result Callback
              • Capturing Video and Description of the on_capture_complete Callback
              • Description of the on_error Callback
            • Closing or Hiding the Plugin
            • Localization: Adding a Custom Language Pack
            • Look-and-Feel Customization
              • Customization Options for Older Versions (before 1.0.1)
            • Security Recommendations
            • Browser Compatibility
            • No-Server Licensing
          • Changelog
    • Administrator Guide
      • Deployment Architecture
      • Installation in Docker
      • Installation in Kubernetes
      • Performance and Scalability Guide
      • Publishing API Methods in the Internet: Security Recommendations
      • Monitoring
      • License Server
      • Web Adapter Configuration
        • Installation and Licensing
        • Configuration File Settings
        • Configuration Using Environment Variables
        • Server Configuration via Environment Variables
      • Oz API Configuration
    • User Guide
      • Oz Web UI
        • Requesting Analyses
        • Users and Companies
        • Blacklist
        • Statistics
        • Settings
        • Changelog
  • Other
    • Media Quality Requirements
    • Oz SDK Media Quality Checks
    • Media File Size Overview
    • Compatibility
    • FAQ
    • Tips and Tricks
      • Oz Liveness Gestures: Table of Correspondence
      • Sudo without Password
      • Android: Certificate Validation Error
    • Previous Documentation
      • Mobile SDK
        • Android
          • Interactions with the Oz API Server
          • Uploading and Analyzing Media
        • iOS
          • Uploading and Analyzing Media
      • User Guides
        • Oz Demo Kit
        • Web UI
      • Oz Modules Installation
        • Standalone Installer
        • Oz System Lite
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  • Common Media Requirements
  • Video Quality Requirements
  • Image Quality Requirements
  • Documents Requirements

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Media Quality Requirements

If your media meets the listed requirements, this ensures the highest analysis accuracy. If media does not meet the minimal requirements, accuracy is not guaranteed.

We highly recommend using our SDK to capture media. This ensures your media meets all requirements, and you receive the most reliable analysis results.

Common Media Requirements

  • There shouldn't be more than one face in the frame (except photos of documents).

  • The face should be in the center of the frame (except photos of documents).

  • Orientation: portrait or landscape.

  • Liveness images should have 3 channels.

Video Quality Requirements

Parameter

Requirements

Video length

  • up to 5 seconds

Bitrate

  • recommended – 10000 Kbit/sec

Resolution

  • minimum – 480p

  • recommended – 720p

Angle

  • full-face

  • the eye line is horizontal

Deviation of the face from the vertical direction:

  • minimum – 30 degrees or less

  • recommended – 15 degrees or less

Brightness

Minimum:

  • the eye area is not too dark

  • the background is not too bright

Recommended:

  • the face shape is clear

  • the eye area is not too dark

  • the background is not too bright

  • the face should be evenly illuminated without glares or shadows

Face size

Portrait:

  • 50-80% of the frame height

  • 40-60% of the frame width

Lanscape:

  • 50-80% of the frame height

  • 15-25% of the frame width

Video format

Recommended:

  • MPEG/MPG

  • QuickTime/MOV

  • MP4

Also possible:

  • OGG

  • WebM

  • WMV

  • AVI

Image Quality Requirements

The requirements below refer to photos taken at the time the check is being performed.

Parameter

Requirements

Resolution

  • minimum – 480×640 (252×300 for Oz Biometry)

  • recommended – 720×1280

Angle

  • full-face

  • the eye line is horizontal

Deviation of the face from the vertical direction:

  • minimum – 30 degrees or less

  • recommended – 15 degrees or less

Brightness

Minimum:

  • the eye area is not too dark

  • the background is not too bright

Recommended:

  • the face shape is clear

  • the eye area is not too dark

  • the background is not too bright

  • the face should be evenly illuminated without glares or shadows

Face size

Portrait:

  • 50-80% of the frame height (for Oz Biometry, from 15%, but not less than 112)

  • 40-60% of the frame width

Landscape:

  • 50-80% of the frame height (for Oz Biometry, from 15%, but not less than 112)

  • 15-25% of the frame width

Image format

  • JPG

  • JPEG

Documents Requirements

  • No glares or shadows.

  • The background is not too bright.

  • The face on a photo is in focus and has no objects on it.

  • Minimum size of face on photo – 10% of the frame height, but not less than 112×112.

  • Photos of documents should not be compressed.

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Last updated 4 months ago

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