Meta Video Facebook Facebook Reels Overlay Ads on ad specs

Meta Video Facebook Facebook Reels Overlay Ads on creatives have 8 published requirements: 3 block the ad in review, 5 are recommendations. The creative must be 1440 × 1440 px, supplied as MP4 or MOV, no larger than 4 GB and no longer than 15 seconds. Covers video creatives.

Dimensions: 1440 × 1440 px
Accepted formats: MP4, MOV
Max file size: max 4 GB
Aspect ratio: 1:1
Duration: max 15 sec
Bitrate: min 128 kbps

All 8 requirements

3 of the 8 block the ad in review. Values are the platform's published limits.

File formats
1 requirement · 1 blocking
Aspect ratio
1 requirement
Bitrate
1 requirement
File size
1 requirement · 1 blocking
Text length
1 requirement
Dimensions
1 requirement
Content and policy
1 requirement
Duration
1 requirement · 1 blocking

Requirement	What the platform says	Value	Creative	Severity
Accepted Formats	Accepted video file types are MP4 and MOV.	MP4, MOV	Video	Blocker
Aspect Ratio	The recommended video aspect ratio is 1:1.	1:1	Video	Recommendation
Audio Compression	Audio should use stereo AAC audio compression at 128kbps or higher.	min 128 kbps	Video	Recommendation
Max File Weight - Video	The maximum video file size is 4GB.	max 4 GB	Video	Blocker
Primary Text Character Limit	Primary text should be no more than 60 characters. Spec: {"max":60}	-	All	Recommendation
Resolution	The recommended video resolution is 1440 x 1440 pixels.	1440 × 1440 px	Video	Recommendation
Video Compression	Video settings should use H.264 compression, square pixels, fixed frame rate, and progressive scan. Requirement: H.264 compression, square pixels, fixed frame rate, progressive scan.	-	Video	Recommendation
Video Duration	The minimum video duration is 4 seconds and the maximum video duration is 15 seconds.	max 15 sec	Video	Blocker