Meta Video Messenger Stories ad specs

Meta Video Messenger Stories creatives have 9 published requirements: 4 block the ad in review, 5 are recommendations. The creative must be 1080 × 1920 px, supplied as MP4, MOV or GIF, no larger than 4 GB and no longer than 60 seconds. Covers video creatives.

Dimensions: 1080 × 1920 px
Accepted formats: MP4, MOV, GIF
Max file size: max 4 GB
Aspect ratio: 9:16 (±1%)
Resolution: min width 500 px
Duration: max 60 sec

All 9 requirements

4 of the 9 block the ad in review. Values are the platform's published limits.

File formats
1 requirement · 1 blocking
Aspect ratio
1 requirement
Text length
2 requirements
File size
1 requirement · 1 blocking
Resolution
1 requirement · 1 blocking
Dimensions
1 requirement
Safe zones
1 requirement
Duration
1 requirement · 1 blocking

Requirement	What the platform says	Value	Creative	Severity
Accepted Formats	Accepted video file types are MP4, MOV or GIF.	MP4, MOV, GIF	Video	Blocker
Aspect Ratio	The recommended video aspect ratio is 9:16 with an aspect ratio tolerance of 1%.	9:16 (±1%)	Video	Recommendation
Headline Character Limit	Headline is recommended to be no more than 40 characters. Spec: {"max":40}	-	All	Recommendation
Max File Size	Maximum video file size is 4GB.	max 4 GB	Video	Blocker
Minimum Width	The minimum video width is 500 pixels.	min width 500 px	Video	Blocker
Primary Text Character Limit	Primary text is recommended to be no more than 125 characters. Spec: {"max":125}	-	All	Recommendation
Resolution	The recommended video resolution is 1080 x 1920 pixels.	1080 × 1920 px	Video	Recommendation
Safe Zone	Leave roughly 14% (250 pixels) of the top and bottom of the video free from text and logos. Spec: {"height":250,"unit":"px"}	-	Video	Recommendation
Video Duration	Video duration must be between 1 second and 60 seconds.	max 60 sec	Video	Blocker