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Meta has specific video aspect ratio requirements for different ad placements. AdStellar validates your videos automatically and lets you swap assets per placement.

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Aspect Ratio Requirements

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Compatibility Indicators

When you add a video to a creative template, AdStellar checks it against each placement’s requirements:
  • Optimal — Video meets the placement’s recommended aspect ratio
  • Compatible — Video will work but isn’t ideal (may be cropped or letterboxed)
  • Not Optimal — Video doesn’t meet requirements and may not deliver well

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Placement Overrides

If your video isn’t optimal for all placements, you can swap in different video assets per placement. In the Creative Builder, click on a placement group to assign a different video. For example, use a 1:1 square video for Feed and a 9:16 vertical video for Stories.
For maximum coverage, prepare your video in 3 aspect ratios: 1:1 (square) for Feed, 9:16 (vertical) for Stories/Reels, and 16:9 (landscape) for in-stream. This ensures optimal delivery across all placements.

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What Happens with Incompatible Videos

Meta may automatically crop or letterbox videos that don’t match the placement’s aspect ratio. This can result in:
  • Important content being cut off at the edges
  • Black bars appearing above/below or on the sides
  • Lower engagement due to poor visual presentation
Using the correct aspect ratio for each placement prevents these issues entirely.