# Video Splitter Online - Split Video into Equal Parts

> Free online video splitter: split into equal parts, every X seconds, by MB per part or at timeline markers. Fast lossless or frame-accurate mode, ZIP download.

- URL: https://qilingtools.com/en/video/split
- Category: Video Tools (https://qilingtools.com/en/video)
- Tags: [Video](https://qilingtools.com/en/tags/video), [Merge & Split](https://qilingtools.com/en/tags/split-merge)
- Last updated: 2026-10-26
- Price: Free, no sign-up
- Privacy: Runs locally in the browser; files are never uploaded

Split a long video into smaller clips. Choose N equal parts; every X seconds (for example 60-second parts for Stories or short-video length limits); a target size per part in MB, where the length of each part is estimated from the video's average bitrate — handy for email, cloud-drive or messaging-app size limits; or custom time points, typed in or added while you watch with “Split at current time” on the timeline, where clicking a red marker removes it. The timeline shows each part in alternating colors and a table lists every part's start, end, length and estimated size. Fast mode copies the audio and video data without re-encoding, finishing in seconds with no quality loss, but it can only cut on keyframes, so each cut moves to the next keyframe. Precise mode re-encodes each part to H.264 MP4 with frame-accurate cuts. When it finishes you see each part's actual start, end, length and file size, and can download parts individually or all together as a ZIP.

## How to use

1. Upload a video
2. Choose how to split: N equal parts, fixed length, size per part, or custom markers on the timeline
3. Choose Fast or Precise mode, click Split video, check the part lengths and download the ZIP

## Features

- N equal parts, every X seconds, or size per part (MB)
- Custom split points with timeline markers you can click to remove
- Color-coded timeline plus a table of every part's start and length
- Fast mode: no re-encoding, done in seconds, lossless
- Precise mode: re-encodes for frame-accurate cuts
- Actual part lengths and sizes, ZIP download
- Works with MP4, MOV, MKV, WebM and other common formats
- Runs locally in your browser, no upload

## FAQ

### Why are the fast-mode parts not exactly the length I set?

Video is compressed in groups that start at keyframes, so without re-encoding a part can only begin on a keyframe. Each cut therefore moves to the first keyframe after the split point — usually 0–2 seconds later, more for videos with sparse keyframes. The page lists every part's actual start and end when it finishes. Use Precise (re-encode) when cuts must land on an exact second.

### How accurate is splitting by size?

The tool computes the average bitrate as file size ÷ duration, derives how long each part should be, and keeps about 5% headroom. Because scene complexity varies and fast mode moves cuts to keyframes, a part can still come out slightly larger, so set the target a little below your platform's limit.

### Does splitting reduce quality?

Fast mode simply separates the original data, so quality is identical to the source. Precise mode re-encodes to H.264 at CRF 20, which is visually near-identical but takes longer.

### Is my video uploaded? Is it free?

Nothing is uploaded — everything runs in your browser with FFmpeg (WebAssembly) and is discarded when you close the page. The tool is free, with no sign-up and no watermark.

## Related tools

- [Compress Video](https://qilingtools.com/en/video/compress): Free online video compressor: shrink MP4, MOV and other formats with H.264 encoding and resolution scaling, at the strength you pick. Processed locally.
- [Convert Video](https://qilingtools.com/en/video/convert): Free online video converter: convert MOV, MKV, AVI, FLV, WebM and more to MP4 or WebM. Powered by FFmpeg, processed locally, no upload.
- [Trim Video](https://qilingtools.com/en/video/trim): Free online video trimmer: set start and end times to cut a clip; fast mode finishes in seconds without re-encoding. Processed locally, no upload.
- [Video to GIF](https://qilingtools.com/en/video/to-gif): Free online video to GIF converter: cut a clip and create a high-quality animated GIF with adjustable frame rate and width. Processed locally, no upload.
- [Extract Audio](https://qilingtools.com/en/video/extract-audio): Free online tool to extract audio from MP4, MOV and other videos as MP3, M4A or WAV. Processed locally, no upload.
- [Video Screenshot](https://qilingtools.com/en/video/screenshot): Free online video frame grabber: enter a timestamp and save that frame as a full-resolution PNG or JPG. Processed locally, no upload.
- [Mute Video](https://qilingtools.com/en/video/mute): Free online video muter: remove the audio track from a video in one click without re-encoding the picture. Finishes in seconds, processed locally, no upload.
- [Merge Videos](https://qilingtools.com/en/video/merge): Free online video joiner: combine several MP4, MOV or MKV clips into one file, even when their resolution and frame rate differ. Processed locally.