Video Chroma Subsampling Detector

Upload your video ad to check the video's chroma subsampling.

Check 24+ ad quality tests for ad performance — validate against IAB video ad guidelines

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HTML5 Zip

Ad Tag

VAST

Video

Image

Audio

smart_display settings_system_daydream panorama

Drop your video ads here

MP4, WebM, MOV, AVI, MPG, 3GP

Validate against:

Ad Spec: IAB Ad Guidelines

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Video Chroma Subsampling

Chroma subsampling is a method used to encode videos by implementing less resolution for color information than for black/white information. A common subsampling type used for videos is 4:2:0.

Why do we test it?

Chroma subsampling takes advantage of the human's visual system's lower acuity for color differences than for black/white. Savely removing information that we can't notice saves bytes, resulting in lower file sizes.