9:16
Crop a video for TikTok
Turn a wide clip into a vertical 9:16 video and keep the speaker in the frame.
Crop video online
Attach a video and say the shape or size you need. Manus crops it and gives you the file to download.
How to crop a video
All you need is the video and a sentence about the shape you want.
- 1
Attach your video
Add a file from your computer, or let Manus work with your local folders in the desktop app.
- 2
Describe the crop
Say the aspect ratio, the size in pixels, or what should stay in the frame.
- 3
Download the cropped file
Save the result, or keep working on it in the AI video editor.
Video cropper for TikTok, Instagram, and YouTube
Pick an example to start from it.
4:5
Crop video for Instagram posts
Get a 4:5 portrait crop that takes up more of the feed than a wide video.
9:16
Crop a video for YouTube Shorts
Reframe a landscape clip as a 9:16 Short, or make a new one with the AI video generator.
1:1
Square video for Facebook
Crop to a 1:1 square for a feed post and remove black bars at the top and bottom.
Change video aspect ratio in Video Editor
Set the frame yourself when you want full control over each shot.
Resize the canvas
Switch the frame between widescreen 16:9 and vertical 9:16.
Compose each shot
Place your clips in the new frame so the right part stays in view.
Ask for changes as you go
Edit by hand, or ask Manus to make the change for you.
Work on your computer
Video Editor is part of the desktop app for Mac and Windows.
Crop MP4, MOV, WebM, and more
Attach the file as it is. Manus crops it on its own computer with tools like FFmpeg.
More ways to work with video
Video cutter
Trim a video or cut out the parts you don't need
Video background remover
Remove the background from a video
AI video enhancer
Brighten and color-correct a video
Video Editor
Make every cut your own
AI video generator
Turn an idea into a video
Media processing guide
Work with video, audio, and images.
Frequently asked questions
How do I crop a video?
Attach the video to Manus and say the shape or size you need, such as 9:16 for TikTok or 1080×1080 for a square post. Manus crops it on its own computer and gives you the file to download.
Can you crop a video online?
Yes. Open Manus in your browser, attach the video, and describe the crop. There is nothing to install, because the work runs on the computer Manus uses for each task.
How do I change the aspect ratio of a video?
Tell Manus the ratio you want, such as 9:16, 1:1, 4:5, or 16:9, and which part of the frame to keep. To set the frame yourself, resize the canvas in Video Editor.
Can I crop a video to an exact size?
Yes. Give the width and height in pixels, for example 1080×1920, and say which part of the frame to keep. Manus can also scale the cropped video to the size you ask for.
Which aspect ratio should I use for TikTok, Reels, and Shorts?
Use 9:16, for example 1080×1920, for TikTok, Instagram Reels, and YouTube Shorts. For an Instagram feed post, 4:5 or 1:1 works well.
Can I crop and trim a video in the same task?
Yes. Describe both in one message, for example “crop to 9:16 and keep only 0:12 to 0:40.” Manus does both and returns one file.
Does cropping lower the video quality?
Cropping keeps part of the frame, so the result has fewer pixels than the original. The video is re-encoded when it is cropped, so ask Manus for a high quality setting if that matters to you.
Which video formats can I crop?
You can attach MP4, MOV, MKV, WebM, AVI, WMV, FLV, M4V, 3GP, MPG, and MPEG files. Tell Manus which format you want back, such as MP4 or the same format as the original.
How long can the video be?
Manus can process videos up to several hours long. Longer videos take more time.
How does Manus crop a video?
Manus has its own computer and processes footage with tools like FFmpeg, as described in Introducing Video Editor. It works out the crop area from your request and writes a new video file.