add
New Scan
folder_open
0
My Scans
fact_check
Ad Specs
rocket_launch
Launching
photo_auto_merge
3P Uploads
inbox
My Inbox
group
1
My Team
settings
Settings
notifications_active
Alerts
login
Log In

Video Letterboxing Detector

Upload your video ad to check if the video has black bars.

Collect 24+ data points and validate against IAB ad guidelines

HTML5 Zip
Ad Tag
VAST
Video
Image
Audio
 
smart_display settings_system_daydream panorama
Drop your video file here
Format: MP4, WebM, MOV, AVI, MPG, 3GP
auto_stories
API Docs
Go ahead, try
it yourself !

Video Letterboxing

Letterboxing occurs when a video does not match the display aspect ratio, causing black bars to appear on the top/bottom or left/right side the frame.

Why do we test it?

Video ads should aim to fit the intended display dimensions without letterboxing, as it can detract from the viewer's experience and reduce the visual impact of the ad. Detecting letterboxing ensures the ad maintains a professional appearance across platforms.