Change Video Size
Set custom width and height for your video.
Upload Video
Drop video hereChoose VideoUp to 100MB • MP4, MOV, WEBM, AVI
No signup•Secure processing•Auto-deleted after processing
Supported Input and Output
- Accepted input
- MP4, MOV, AVI, MKV, and WebM video
- Output
- MP4 with the entered width and height
- Upload limit
- Up to 100 MB per video
- Controls
- Width and height fields, Optional aspect-ratio lock
What This Processing Changes
This page changes pixel dimensions, not a guaranteed file-size target. The output is re-encoded and its byte size depends on the resulting bitrate and duration.
How to Check the Result
- Read frame dimensions in the downloaded file.
- Check geometry; disabling aspect ratio intentionally stretches this landscape sample.
Limits and Troubleshooting
- Use Compress Video when the requirement is measured in MB rather than pixels.
- Avoid entering dimensions larger than the source unless a platform explicitly requires them.
Worked Example: Set exact 320 × 240 pixel dimensions for a required display.
- Upload sample.mp4 from the example below.
- Set width: 320, height: 240, Keep aspect ratio: off.
- Process and download; play the result from beginning to end.
Check Your Download
- Read frame dimensions in the downloaded file.
- Check geometry; disabling aspect ratio intentionally stretches this landscape sample.
Limit: Pixel dimensions are not a guaranteed file-size limit. Use Compress Video for requirements measured in MB.
Download the example input and repeat the steps above. These are generated test files, not customer uploads.
- Input bytes
- 135,582
- Output bytes
- 58,166
- Verified result
- 320 × 240; 2.020 seconds; h264
- Test date
- 2026-10-06
Measurements apply to this sample and these settings. Other inputs and codec versions can produce different sizes and results.