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.
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.