Video Splitter
Cut a long video into parts of equal length, status-sized chunks or a timeline you choose.
How to split
Stories and status updates are usually 15, 30, 60 or 90 seconds — check the limit of the app you post to.
One per line. Seconds (90), m:ss (1:30) or h:mm:ss (0:01:30).
What will happen
All parts
About the Video Splitter
Cut one video into several files: into N equal parts, into fixed-length chunks (handy for a 15, 30, 60 or 90-second Status, Short or Reel), or at timestamps you type. Each part is a working video file.
Splits can be Fast or Exact:
- Fast copies the picture packet for packet at the nearest keyframe, so a split takes seconds and loses nothing — the parts look exactly like the original. The exact cut lands within a keyframe interval (usually 2 seconds) of where you asked.
- Exact re-encodes the picture at the chosen split point, so the cut is on the millisecond. Slower, and the picture is encoded again.
The sound is copied in both modes. Every part is written in the same container as the input (MP4, MOV, MKV or WebM).
How to use it
- Drop a video on the box or click Choose a video.
- Pick how to split: Equal parts (how many), Fixed length (how long each part should be, in seconds), or At timestamps (type them, one per line).
- Choose Fast (lossless, at keyframes) or Exact (re-encoded for an exact cut).
- Press Split the video and download each part one by one, or the whole set as a ZIP.
Examples
4:00 MP4 · Fixed length 90 s · Fast
Three parts: 1:30, 1:30 and 1:00, each copied without re-encoding
1:30 clip · Equal parts: 3 · Fast
Three roughly 30-second files that land on keyframes, so Fast cuts are a few hundredths of a second long or short
1:00 clip · At timestamps 0:10, 0:35 · Exact
Three parts: 0–10 s, 10–35 s, 35–60 s, re-encoded for exact cuts
What is a keyframe, and why does Fast cut there?
A video codec writes most frames as a difference from an earlier one. Every few seconds it writes a full picture, called a keyframe (or I-frame). Only a keyframe can start playing on its own, so a lossless split has to start at one.
Most phones and editors save a keyframe every 1–2 seconds, so Fast cuts land a second or two off where you asked. Pick Exact when the cut must land on the frame — a music beat, a reaction, a word.
Fast or exact, in practice
- Fast is right for status-sized chunks, splitting a lecture into chapters, breaking a long recording into something that fits a messaging app, or sharing in parts.
- Exact is right for cutting on a beat, cutting out an exact portion for an edit, or anything where a second of difference matters.
The engine shows how far each Fast cut moved (its shift), so you can see whether that is acceptable before pressing Split.
What the parts become
Every part is a complete, working video file with the same container as your input (MP4 stays MP4, WebM stays WebM, MOV stays MOV, MKV stays MKV). Each part has the same resolution, frame rate and codec as the original. File names look like clip-part-01-of-03.mp4.
Limitations
- Fast cuts land on the nearest keyframe (usually within a second or two); use Exact for frame-accurate cuts.
- Exact mode needs WebCodecs and a decoder for the video’s codec (current Chrome, Edge, Safari or desktop Firefox); HEVC needs a hardware decoder.
- The sound is copied; it cannot be re-encoded to a smaller size here.
- At most 100 parts in one split.
- Subtitle tracks and chapters are not carried over.
Privacy
Everything happens in your browser. What you enter or open here is not uploaded or stored by MySmartCoPilot.
Frequently asked questions
What length should I use for a Status, Reel or Short?
Use the limit of the app you post to — they differ and they change. A YouTube Short can be up to 3 minutes; stories and status updates are usually 15, 30, 60 or 90 seconds. Pick Fixed length, type that number of seconds, and every part comes out that long (the last one holds what is left).
Will Fast cut on the exact second I asked for?
Not always — only if that second happens to be a keyframe. Fast cuts to the nearest earlier keyframe, so the exact cut lands within a second or two. The engine shows the shift. Use Exact when the second has to be exact.
Does splitting lower the quality?
Fast is lossless: the pixels are copied as they are. Exact re-encodes at the chosen quality.
Can I download them all together?
Yes — press Download all (ZIP) after the parts are made. For very long splits, download them one by one as they finish.
Can I split a video on my phone?
Yes, in current mobile browsers. Fast splits are quick even on phones; Exact takes longer and the browser may struggle on very long clips.
Is my video uploaded?
No. The split happens inside your browser; every part is saved to your device.