- YouTube Shorts ads drive 10–20% more conversions per dollar in vertical 9:16 vs. landscape, per Google research.
- Keep Shorts ads under 60 seconds. Bumper ads max out at 6 seconds, non-skippable.
- Google Ads Asset Library lets you build short video ads from templates with no editing software.
- Recommended vertical resolution is 1080 × 1920 px. Accepted formats include MP4, MOV, and WebM.
- Coinis generates on-brand visuals from a product URL — download and drop straight into Asset Library.
What Are Google Short Video Ads?
Short Google video ads run on YouTube. Two formats matter most: YouTube Shorts ads and bumper ads. Both are short. Both serve different goals.
YouTube Shorts Ads vs. Bumper Ads
YouTube Shorts ads play directly in the Shorts feed. Google recommends keeping them under 60 seconds. Videos can technically run up to 3 minutes, but only the first 60 seconds play in the feed, per Google's YouTube Shorts documentation. After that, you lose viewers.
Bumper ads are a separate format. They cap at 6 seconds, non-skippable, and run across broader YouTube inventory. Use bumpers for brand recall. Use Shorts ads for driving action.
Skippable in-stream ads let viewers skip after 5 seconds. Non-skippable in-stream runs 7 to 15 seconds standard, per Google Ads Help documentation.
Why Short-Form Video Performs on YouTube
Vertical video assets on YouTube Shorts drove 10 to 20% more conversions per dollar than landscape assets alone, according to Google's own published research. Short content matches how people scroll. Hook first. Context second. Every second of delay costs you.
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Specs and Requirements for Short Google Video Ads
Get these right before you create anything.
Video Duration and Length
- Bumper ads: 6 seconds maximum, non-skippable.
- YouTube Shorts ads: under 60 seconds recommended.
- Skippable in-stream: viewer can skip after 5 seconds.
- Non-skippable in-stream: 7 to 15 seconds standard.
Dimensions and Aspect Ratios
Per Google's video ad specs documentation:
| Format | Recommended Resolution | Minimum Resolution |
|---|---|---|
| Vertical (9:16) | 1080 × 1920 px | 720 × 1280 px |
| Horizontal (16:9) | 1920 × 1080 px | 1280 × 720 px |
| Square (1:1) | 1080 × 1080 px | 480 × 480 px |
For Shorts ads, use vertical. It outperforms everything else on that placement.
File Formats and File Size Limits
Google Ads accepts MP4, MOV, MPEG-4, WebM, DNxHR, ProRes, CineForm, and HEVC (h.265). Maximum file size is 256 GB. YouTube handles transcoding on upload, so prioritize quality over compression.
Safe Zones and Technical Best Practices
Keep text and logos away from the edges. Shorts UI overlays appear at the bottom of the frame. Center your core message in the middle of the frame. Ad descriptions max out at 90 characters. Exceed one line on mobile and the text truncates. Keep it tight.
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How to Create a Short Video Ad in Google Ads
Step 1: Prepare or Gather Your Assets
Pull together your product images, brand logo, and key copy before you open Google Ads. Vertical photos work best. You also need an active YouTube channel connected to a Brand Account with editor or owner permissions. Your video must be hosted on YouTube (public or unlisted) before it can serve as an ad.
Step 2: Use Google Ads Asset Library Video Creator
Open Google Ads. Navigate to Tools, then Asset Library. Select Videos, then Create Video. This is Google's built-in video creation tool. No editing software required.
Step 3: Choose a Template and Customize
Google provides vertical and square video templates. Pick one that fits your goal: product showcase, promotional offer, or brand awareness. Add your images, logo, brand colors, and text. Choose from predefined fonts and licensed music tracks inside the tool.
Step 4: Upload and Review Your Video
Preview your video in the storyboard view. Adjust anything that feels off. When you confirm, Google automatically uploads the video to your connected YouTube channel as public or unlisted. Review for policy compliance before moving on.
Step 5: Add to a Campaign
Open or create a campaign in Google Ads. For Shorts inventory, use Performance Max, Video View, or Demand Gen campaign types. Attach your video asset. A CTA button appears 3 seconds into the ad for Performance Max and Demand Gen. For Video View and Reach campaigns, it appears at 10 seconds.
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Creative Best Practices for Short Video Ads
Use Vertical Video Format (9:16)
Vertical fills the screen. It feels native. It converts at a meaningfully higher rate than landscape on Shorts.
Keep It Fast-Paced and Action-Driven
No slow intros. Show the product or core value within the first 2 seconds. Hook first, context second. Assume viewers will scroll away at any moment.
Include Sound and Music
Audio is required in your video file. MP3 and WAV cannot be uploaded separately. Embed audio in the video before upload. Sound drives conversions. Use music from Asset Library's licensed tracks or embed your own.
Write Clear, Concise Messaging
Keep descriptions under 90 characters. Say what the viewer gets. Lead with the offer or the outcome. Cut the warm-up.
Optimize for Mobile
Watch your final video on a phone before launch. Confirm text is readable at full scale. Confirm logos are not cut off by platform UI overlays.
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Scaling Your Video Creative with Coinis
Google's Asset Library gets you started. Coinis builds the creative assets that go into it, faster.
Generate Multiple Video-Ready Creatives Quickly
Coinis's Image Ads workflow turns a product URL into polished, on-brand visuals in minutes. No photography. No design cycle. Paste the URL, and cutting-edge AI models generate assets matched to your brand. Download them and drop straight into Asset Library to build your Shorts ad.
Brand Profile learns your visual identity, tone, and messaging. Every asset comes out on-brand without extra prompting.
Edit and Resize Across Formats
Need a vertical version and a square version of the same creative? Coinis Revise Smart Resize handles both in one click. Swap text, adjust colors, erase backgrounds, or upscale a lower-resolution image before upload. Faster than rebuilding from scratch.
Store and Organize in Creative Library
Every asset you generate in Coinis lives in your Creative Library. Organized into folders. Searchable. Ready to export for any campaign. No more digging through downloads folders before an Asset Library session.
Coinis publishes directly to Meta today. Google Ads direct publishing is on the roadmap. Right now, Coinis is the creative production engine you run alongside Google Ads.
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Frequently Asked Questions
Does my video need to be on YouTube before running as a Google ad?
Yes. Google Ads only runs video ads hosted on YouTube. Upload your video as public or unlisted to your YouTube channel before attaching it to a campaign. Your YouTube channel must be connected to a Brand Account with editor or owner permissions.
What is the difference between a YouTube Shorts ad and a bumper ad?
Bumper ads are 6 seconds max, non-skippable, and run across YouTube inventory. YouTube Shorts ads play in the Shorts feed and perform best when kept under 60 seconds. They serve different goals: bumpers for brand recall, Shorts ads for driving action.
What video format should I use for YouTube Shorts ads?
Use vertical 9:16 format at a recommended resolution of 1080 × 1920 px. Accepted file formats include MP4, MOV, WebM, and MPEG-4. Vertical video consistently outperforms landscape on the Shorts placement.
Can I create a short video ad without video editing software?
Yes. Google Ads Asset Library includes a built-in video creation tool with customizable templates. Add images, a logo, text, and licensed music directly inside Google Ads. No external editing software is needed.