Facebook video ads are one of the most powerful formats on the platform. But specs, placements, and creative choices can pile up fast. This guide covers everything you need, from the hook to the publish button.
> Quick answer: Hook viewers in 3 seconds. Keep it 15 to 30 seconds. Build for mobile and sound-off. Upload HD MP4 at 4:5 aspect ratio for Feed. Add captions. Hit publish.
What Makes a Winning Facebook Video Ad
Strong video ads share four traits: a fast hook, a short runtime, mobile-first design, and a clear CTA.
Hook viewers in the first 3 seconds
You have three seconds. That's it. Most viewers scroll past anything that doesn't grab them immediately. Lead with your strongest visual. Show the product. State the problem. Give someone a reason to stop mid-scroll.
Keep it short (15 to 30 seconds optimal)
Shorter videos consistently outperform longer ones. Videos between 15 and 30 seconds deliver the best engagement results. A tight 15-second cut forces you to focus on what actually matters.
Design for mobile and sound-off viewing
Most Facebook video views happen on mobile. Most users watch with sound off. Design visuals that communicate without audio. Add captions. Put key messages on screen in text, not just voiceover.
Clear call-to-action at the end
Tell viewers exactly what to do next. "Shop now." "Learn more." "Get the discount." One action. No ambiguity.
---
Video Ad Specifications You Need to Know
Per Meta's Ads Guide, technical specs directly affect delivery quality. Get these right before you upload anything.
Recommended aspect ratios (4:5 for Feed, 1:1 square, 9:16 vertical)
For Facebook Feed, 4:5 vertical is the recommended aspect ratio. It takes up more screen space on mobile devices, which drives stronger attention. Square (1:1) works well for carousels and multi-placement campaigns. Vertical (9:16) is ideal for Stories and Reels. Both square and vertical formats generate more engagement on mobile by occupying more screen real estate.
File formats and size limits
Upload videos in MP4 or MOV format. Maximum file size is 4GB for most video placements. Per Meta's Best Practices documentation, MP4 and MOV ensure optimal delivery across devices. Stick to MP4 for broadest compatibility.
Video length by placement
Length limits vary by placement. Feed videos can run long, but 15 to 30 seconds is optimal for engagement. Stories and Reels have shorter caps. Check Meta's placement-specific length requirements in Ads Manager before you build your cut.
Technical quality (HD, 30fps, audio specs)
Meta recommends uploading HD video at 30fps. For audio, use stereo at 44,100Hz sample rate. Higher-quality inputs produce better delivery quality across all devices.
---
Step-by-Step: Creating Your Video Ad in Ads Manager
The Facebook Business Help Center documents this full workflow. Here's the core process.
Choose your campaign objective
Open Ads Manager and click "Create." Select your objective. For video ads built to drive brand recall, Meta recommends the Brand Awareness objective. For direct conversions, choose Sales or Traffic.
Upload or select your video
At the ad level, click "Add Media" and upload your video file. You can also select an existing video from your asset library or use a live post. MP4 at HD quality is your best choice.
Add captions and text overlays
Captions are not optional. Ads Manager includes an auto-caption tool. Generate them, then review for accuracy before publishing. Add text overlays for any message critical to your conversion goal.
Set targeting and budget
Define your audience using detailed targeting, custom audiences, or lookalike audiences. Set your daily or lifetime budget. Use Automatic Placements to let Meta optimize delivery across Facebook, Instagram, and Audience Network.
Review and publish
Preview your ad across placements. Check that the aspect ratio renders cleanly on mobile. Confirm captions display correctly. Publish and monitor delivery in Ads Manager.
---
Alternative Methods for Creating Video Ads
You don't always need a full video production setup. Meta offers simpler paths.
Boost a live video or existing post
If an organic video post is already performing well, boost it. Go to the post, click "Boost Post," and configure your targeting and budget. It's the fastest path to a live video ad.
Create video from images and transitions
Per Meta's documentation on creative tools to turn images into video ads, you can build video ads from static images using transitions and motion effects. No video file required. Upload product images and let the platform generate movement.
Use slideshow format as video alternative
Slideshow ads are lightweight, video-style ads built from images. They load faster on slower connections and reach audiences with limited data speeds. Build them directly in Ads Manager under "Slideshow."
---
Best Practices to Optimize Your Video Ads
Per Meta's Best Practices to Optimize Video Ad Quality, these details drive measurable differences in performance.
Use HD video quality
Low-resolution video hurts brand perception and ad delivery. Always upload the highest quality source file you have. Let Meta's compression work from a strong starting point.
Add captions (most users watch without sound)
This deserves repeating. Captions are essential, not optional. A well-captioned video communicates fully to every viewer regardless of their sound settings.
Test different aspect ratios and lengths
Run tests between 4:5 and 1:1 formats. Test 15-second versus 30-second cuts. Small format changes can produce meaningful differences in reach and engagement.
Choose Brand Awareness objective for memorability
Meta notes that the Brand Awareness objective is recommended for showing video ads to people most likely to remember them. If recall is your goal, match your objective to that outcome.
---
Streamline Video Ad Creation With Coinis
Great video ads start before you open Ads Manager. Coinis works upstream of the platform, helping you develop and refine your creative approach fast.
Generate compelling ad concepts with Image Ads
Coinis's Image Ads workflow generates ad creatives from a product URL. Input your product page and get polished ad concepts built around your offering. Use those visuals as the foundation for your video ad storyboard or as frames inside a slideshow ad.
Use Brand Profile to ensure consistent messaging
Brand Profile analyzes your brand and stores your voice, tone, and visual identity. Every ad concept Coinis generates draws from that profile. Your video ad headlines, body copy, and CTAs stay consistent across every campaign.
Iterate and test creative variations
Use Coinis's Revise tool to spin up variations of your ad concept fast. Variate headlines. Swap text treatments. Test different visual angles. Bring your strongest options into Ads Manager for live A/B testing.
---
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 are ready.
15 AI tokens a month. No credit card.
Frequently Asked Questions
What is the best video length for Facebook ads?
15 to 30 seconds is the optimal range for most Facebook video ads. Videos in this window consistently deliver stronger engagement results. For very fast awareness plays, 6 to 15 seconds can also perform well. Always hook viewers within the first 3 seconds regardless of total length.
What aspect ratio is best for Facebook video ads?
4:5 vertical is the recommended aspect ratio for Facebook Feed video ads. It occupies more screen space on mobile, which drives more attention. Square (1:1) works across carousels and multiple placements. Vertical (9:16) is best for Stories and Reels.
Do Facebook video ads need captions?
Yes. Most Facebook users watch videos with sound off, so captions are essential for communicating your message. Ads Manager includes an auto-caption tool. Generate captions, review them for accuracy, and always publish with captions enabled.
What file format should I use for Facebook video ads?
MP4 is the recommended format for Facebook video ads. MOV is also supported. Upload at HD quality with a 30fps frame rate and stereo audio at 44,100Hz. Maximum file size is 4GB for most placements.