Most video editors ask you to cut, mask, and grade on a timeline. The free AI video editor on ToolXoX works from a sentence instead. You upload a short MP4, describe the change, complete the security check, and click Edit Video with AI. The page is a video-to-video tool: it transforms a clip you already have, rather than building a film from a text prompt alone.
Typical edits are a new background, a removed logo, a weather change, a warmer grade, or a cinematic restyle. You do not need CapCut or Premiere for those short jobs, and you do not need an account to try the form.
What length and size actually work
The upload hint is the rule to follow: best results come from clips of about 3 to 10 seconds. The file can be up to 30 MB, and short, well-lit takes of about 3 to 6 seconds often process more cleanly than long, shaky footage. AI video editing has to consider every frame, so the page keeps clips short on purpose. If you have a longer video, cut it into short segments, edit each one, and join the results in a regular editor.
The prompt box holds up to 4,000 characters. You will not need that much. A short, specific instruction such as “change the background to a rainy street at night” or “warm cinematic colour grade” is easier for the model to follow than a list of five changes at once. The placeholder on the page also suggests keeping the person and the camera motion unchanged when that is what you want.
How to edit a clip, step by step
- Trim your MP4 to a short, clear take — ideally 3 to 10 seconds and under 30 MB. Avoid heavy camera shake when you can.
- Upload the clip on the tool page, then type one instruction in the prompt box. Say what should change and what should stay the same.
- Complete the security check and click Edit Video with AI once. The job is queued. Leave the tab open until the preview is ready.
- Watch the result, then download it if the subject and the motion still look right. If you need a second change, run a new edit on the output or on the original, not both changes in one tangled prompt.
Prompts that stay under control
Name the edit, not the mood in the abstract. “Remove the logo in the corner” is clearer than “make it better.” “Restyle as a night scene, keep the person and the walk cycle” tells the model what to protect. If the first output changes too much of the subject, add an explicit “keep the person unchanged” and try again.
Object removal, background changes, and a colour restyle are the jobs this page is built for. It is not a full timeline: you will not cut a talking-head interview, add titles, or mix a soundtrack here. Use a regular editor for those steps after you like the AI pass.
Related video tools on CanvaPro
When the clip is already the right scene but looks soft or dark, the video enhancer is the more direct fix, and there is a guide to enhancing a video. If all you need is a transparent or replaced backdrop, the video background remover is built for that, and you can also read how to make a green screen video without a green screen.
Those CanvaPro tools solve one job each. The ToolXoX editor is the one to use when a single text instruction should restyle or clean a short clip.
The placeholder in the prompt box is a good model: change the background to a rainy Tokyo street at night, remove a logo in the corner, or make the clip cinematic and warmer, while asking the model to keep the person and the camera motion. One of those jobs per run is enough. If you need a logo gone and a night restyle, do the removal first, check the subject, then restyle the cleaned clip.
If the edit misses the brief
A file over 30 MB, or a format that is not an MP4 the uploader accepts, will fail before the prompt matters. Export a shorter take and try again. If the output warps the subject, shorten the clip, simplify the prompt, and ask the model to keep the person and the camera motion. If the queue stalls, confirm the security check is still valid and wait through one run before clicking again.
Review the downloaded file at full size. A background change can look fine in a small preview and smear at the edges of hair or signage when you watch it on a phone.
Open the prompt-based video editor with one short clip and one clear instruction, then download the result only after the subject still looks like the take you started with.