VAST Video Codec Checker

Scan your VAST Video to detect the video codec.

Check 37+ ad quality tests for ad performance — validate against IAB VAST ad guidelines

Go ahead, just

copy/paste your tag !

HTML5 Zip

Ad Tag

VAST

Video

Image

Audio

Validate against:

Ad Spec: IAB Ad Guidelines

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Video Codec

The video codec is responsible for encoding and decoding video files. The choice of codec impacts file compatibility and performance across different platforms.

Why do we test it?

The most common codecs, like H.264 for MP4 or VP9 for WebM, ensure that your video ads are playable across various devices and browsers. Validating the codec prevents playback errors and ensures optimal compression for streaming.