Quick answer: Facebook video ads work best at 5-15 seconds, in MP4 or MOV format with H.264 compression. Add captions for silent viewers. Show your brand name in the first 3 seconds.
Why Facebook Video Ads Matter
Video ads stop the scroll. They outperform static images on engagement and give you space to show your product in action.
Higher engagement than static images
Motion catches the eye. Facebook Feed rewards content that keeps people watching. Video ads do that job better than a single still frame. More watch time often means lower cost per result.
Ideal for storytelling and demonstrating products
Show how your product works. Show a transformation. Show a customer using it. Video makes the message real in seconds, in a way that a static image simply cannot.
Works across Facebook, Instagram, and Messenger placements
One video creative runs on Facebook Feed, Instagram Feed, Stories, Reels, and Messenger. Upload once. Reach everywhere. That reach makes video ads one of the highest-efficiency formats available.
Technical Specifications You Need to Know
Per Meta's Ads Guide, video ads must meet specific technical requirements. Get these right before you spend a dollar.
Video format and compression standards
Use MP4 or MOV files. Meta requires H.264 compression with progressive scan and square pixels. Maximum file size is 4GB. GIF is also accepted for lightweight animations.
Aspect ratios and recommended dimensions
The two best choices for Facebook Feed are 1:1 square at 1440x1440px and 4:5 vertical at 1440x1800px. Supported ratios across all placements range from 16:9 horizontal to 9:16 vertical, the latter being ideal for Stories and Reels.
Duration, file size, and quality requirements
Facebook Feed supports video from 1 second to 241 minutes. But shorter wins. Meta recommends 5 to 15 seconds for best performance. Upload HD footage whenever possible. Higher resolution improves sharpness in Feed and builds viewer trust.
Frame rate and audio settings
Use a fixed frame rate throughout your clip. Audio must use stereo AAC compression at 128kbps or higher. Sound is optional, but captions are strongly recommended for people watching without audio.
Three Ways to Create Facebook Video Ads
You have three practical paths to a finished video ad. Pick the one that fits what you already have.
1. Upload a native video file
This is the direct route. Film your product, edit in any video tool, then upload through Meta Ads Manager. Choose your placement, add copy, and set your budget. Simple and full-control.
2. Use a slideshow
No video footage? Meta lets you combine still images into a lightweight video ad inside Ads Manager. Pick your images, set the timing, add music, and you have a moving ad in minutes.
3. Generate variations with AI tools
Meta Advantage+ Creative uses AI to enhance video ads inside Ads Manager. It generates background variations, expands video for Reels, and serves the best version to each viewer automatically. Meta's own data shows a 2-3% lift in conversions from background generation and a +13% lift when using related media. Third-party AI platforms can speed up the creative production process before the assets even reach Ads Manager.
Best Practices for Maximum Impact
Good specs get your ad approved. Good practices get it results.
Capture attention in the first 3 seconds
Put your brand name, logo, or key message up front. Most viewers decide to keep watching, or scroll past, in the opening seconds. Do not wait until second four to say something worth watching.
Add captions for sound-off viewing
Per the Meta Business Help Center, captions can be auto-generated by Meta or added manually during ad creation. Most people watch Facebook videos without sound. Captions keep your message clear either way, with no extra effort on your part.
Write concise, compelling copy
Primary text performs best at 50-150 characters. Headlines cap at 27 characters. State the value fast. Cut anything that does not earn its spot. Note: on mobile with Awareness or Reach objectives, the ad footer may not display in Facebook Feed, so make your video carry the message on its own.
Use HD quality and proper audio settings
Meta recommends uploading HD video. Pair it with stereo AAC audio at 128kbps or higher. Low-resolution video looks bad in Feed and signals low production quality to potential customers.
How Coinis Fits Into Your Workflow
Building a video ad from scratch takes time. Coinis cuts that down significantly.
Generate multiple video ad concepts in minutes
The Image Ads workflow takes your product URL and generates ready-to-use ad creatives in multiple formats. No blank canvas. No starting from zero.
Use AI to create variations for A/B testing
More variations mean more data. Coinis generates concept variations quickly, so you can test hooks, formats, and messages without rebuilding each one from scratch.
Maintain brand consistency across all creative
Brand Profile analyzes your brand voice, colors, and style once. Every creative generated after that stays on-brand. No drift. No off-message ads across placements.
Or let Coinis do it.
From a product URL to a live Meta campaign. AI-generated creatives. On-brand copy. Direct publish to Facebook and Instagram. Real performance reporting. All in one platform.
Start free. Upgrade when you're ready.
15 AI tokens a month. No credit card.
Frequently Asked Questions
What is the best video length for a Facebook ad?
5 to 15 seconds is the sweet spot. Facebook Feed technically supports video up to 241 minutes, but short videos hold attention better and typically cost less to run. In-Stream ads have a strict cap of 5 seconds to 10 minutes, with 15 seconds being the recommended length.
Do Facebook video ads need sound?
Sound is optional but recommended when the viewer has audio on. Because most people watch with sound off, always add captions. Per the Meta Business Help Center, captions can be auto-generated by Meta or added manually during ad creation.
What file format should I use for a Facebook video ad?
MP4 and MOV are the recommended formats. Use H.264 compression, square pixels, a fixed frame rate, and progressive scan. Keep the file under 4GB and upload HD quality for the sharpest result.
What aspect ratio is best for Facebook video ads?
For Facebook Feed, 1:1 square (1440x1440px) and 4:5 vertical (1440x1800px) perform best. For Stories and Reels, use 9:16 vertical. Supported ratios overall range from 16:9 to 9:16.