What the tool changes
FFmpeg crops within the source frame and writes an H.264 video with AAC audio in an MP4 container.
Crop Video
Crop a video to new dimensions. Learn how it works, what may change, and how to verify the result. Private temporary files expire after 6 hours.
◈ Encrypted transfer◷ Short retention⊘ No watermark◎ Works on every device
Crop Video: the short answer
Crop a video to new dimensions. FFmpeg crops within the source frame and writes an H.264 video with AAC audio in an MP4 container.
What to know before you use Crop Video
Crop Video can affect quality, metadata, compatibility, or structure. The notes below show what to check in plain language.
What can go wrong
Pixels outside the crop are discarded and the video is re-encoded.
How to verify the result
Watch high-motion sections and confirm the subject stays inside the crop throughout the clip.
A three-step Crop Video checklist
- Before: Keep the source file and open it once to confirm that it is not damaged.
- During: Review every setting shown for Crop Video instead of accepting a value you do not understand.
- After: Do not delete your original until you have opened the result and checked it against the notes above.
Crop Video tip: Compare file size with visible and audible quality. A smaller download is useful only when the destination can open it and playback still holds up.
Before using Crop Video for important work, browse all file tools, read the file-format guide, or review how temporary uploads are protected.
How long the result stays available
Your Crop Video result is stored for 6 hours unless you sign in and save it to your private library.
Crop Video questions
Is my original file changed by Crop Video?
No. Crop Video creates a distinct output file; the source you uploaded is never modified.
What can go wrong when using Crop Video?
Pixels outside the crop are discarded and the video is re-encoded.