I would verify source interpretation when circles become ovals or people look stretched. Stored width divided by height is not the whole display ratio when pixels are non-square or footage needs a documented desqueeze. Cropping can hide edges without correcting the underlying geometry.
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Our recommendation
I favour correct source interpretation before reframing. Use a documented desqueeze or pixel aspect, then verify a square-pixel delivery proof if that is what the recipient requires.
Record the source interpretation
Adobe’s footage documentation describes pixel-aspect-ratio interpretation for non-square-pixel material. Check the camera or source-format specification and the editor’s interpretation rather than choosing a ratio by eye. Keep lens desqueeze, pixel aspect and the final delivery frame as separate concepts.
Use a reliable geometric reference in the footage if one exists, while remembering that perspective and lens distortion can also affect shapes. Do not treat a tilted circle as a calibration target without understanding the shot.
Test before baking the result
On a project copy, set the documented source interpretation and compare the image at the intended display ratio. Then choose the delivery raster, normally with the recipient’s required pixel aspect. Avoid applying a second stretch after the source has already been interpreted.
Render a short proof with recognisable geometry and inspect it outside the editor. Check any graphics or captions added before the correction, since they may have been distorted along with the picture. Record the successful interpretation for other clips from the same verified configuration.
A simple display-ratio calculation
For an illustrative 1440 × 1080 raster with a 4:3 pixel aspect ratio, the display ratio is (1440 ÷ 1080) × (4 ÷ 3), approximately 16:9. Treating those pixels as square displays a different shape. The arithmetic explains the relationship; use the source’s actual documented ratio rather than applying this example to every file.
Before you act
- Check source documentation and current interpretation.
- Keep desqueeze, pixel aspect and crop distinct.
- Inspect geometry in the rendered output.
Use the Aspect ratio calculator to apply the guide to your own setup.
Keep exploring
- Record bit depth and chroma when checking codec compatibility
- Inspect an exported video before sending it
Sources and research notes
Research checked on 21 October 2026. Product specifications are manufacturer statements; examples and buying judgements are our analysis. No hands-on product test is implied.
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