Video size
X timeline video size
The timeline crops tall video to a preview and expands it on tap. Landscape or square shows the whole frame while scrolling, which is where most views happen.
- Resolution
- 1920x1080
- Aspect ratio
- 16:9
- Also accepted
- 1:1 · 9:16
File: MP4, H.264 video, AAC audio.
Length: Length limits on X depend on the account tier more than on the file.
Export suggestions, not a guarantee of how every upload will display. Rules checked: July 2026. Platform docs.
Need to keep the whole scene? Read our guide to resizing without cropping. For a size that is not listed here, use the aspect ratio calculator.
Crop or fit calculator
Enter your source dimensions. Crop fills the output by trimming edges; fit keeps the whole scene and adds space around it. No file upload needed.
Enter whole-pixel dimensions from 1 to 32768.
- Source crop box
- —
- Source offset
- —
- Trimmed away
- —
- Export at
- —
The outline shows the crop or fitted picture. Shaded bands are rough layout guides for vertical output, not official safe-zone dimensions. Actual controls vary by device, captions and player state; check the upload preview.
Do the crop on your phone
Cropzen crops, trims and resizes video to these ratios on Android. No watermark or sign-up. 1080p exports are free; Pro adds 4K.
What to watch out for on X
- Square is the safe compromise if the same file has to work on X and Instagram.
- Video autoplays muted, so anything carried by voice needs burned-in captions.
- Keep the file well under the tier limit, X re-encodes aggressively.
Questions people ask
What size should a X timeline video be?
A suggested export is 1920 by 1080 pixels at 16:9. The timeline crops tall video to a preview and expands it on tap. Landscape or square shows the whole frame while scrolling, which is where most views happen.
Which aspect ratio does X accept besides 16:9?
1:1, 9:16 all upload, but they show bars or get cropped. 16:9 is the one that fills the frame.
Where does the X interface cover the video?
Controls and captions can cover the picture differently across devices and viewing modes. The shaded calculator preview is an illustrative margin, not an official safe-zone specification. Check your upload preview before placing important text near an edge.
How do I crop a video I already shot to this size?
Use the calculator on this page to get the exact crop box, then apply it in any editor. On Android, Cropzen does it in a few taps with no watermark and no sign-up.