Media File Validation

Media File Validation

Our VAST tester checks media files for compliance with VAST specifications, ensuring they are properly formatted and accessible.

---

What We Validate when testing media files in a VAST tag

• File Format: Ensure the media file is in a supported format (e.g., MP4, WebM, OGG)
• Accessibility: Check for proper MIME types and accessibility features
• Playback: Test the media file plays in our video ad player

How We Validate media files in a VAST tag

1. Compliance Checks: Verify the media file meets all VAST requirements
2. Playback: Validate that the media file plays correctly in our video ad player

Common Issues with media files in a VAST tag

• Unsupported file formats
• Missing or incorrect MIME types
• Playback issues in specific environments

---

Possible Results after a VAST validation test

After testing, our VAST validator provides detailed feedback on the media files' compliance if a fail is detected. This can be found within the VAST Validation Results section under the "VAST XML Summary" tab.

Our results may include the below statuses with a description;

• Failed
  • No media files found
  • No supported media formats found
• Pass
  • Multiple or single formats available for optimal browser compatibility

Below is an example of a valid MediaFiles node structure with multiple supported formats

Copy
<MediaFiles>
  <MediaFile delivery="progressive" type="video/mp4" width="1920" height="1080" bitrate="2000">
    <![CDATA[https://example.com/video.mp4]]>
  </MediaFile>
  <MediaFile delivery="progressive" type="video/webm" width="1920" height="1080" bitrate="1800">
    <![CDATA[https://example.com/video.webm]]>
  </MediaFile>
</MediaFiles>