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Edit and CutNew

Split a Video in Half

Halve a video that is too long or too large to upload in one go. Both halves keep the original quality when Fast mode is on.

  • Nothing is uploaded
  • Free, no sign-up, no watermark
  • Works offline once loaded

Drop a video here

or choose a file

MP4, MOV, WEBM, MKV, AVI, M4V, 3GP, FLV, WMV and more

Processed on your device. Nothing is uploaded.

How to use Split Video

  1. 1

    Add the video

    Drop the long video on the drop zone or choose it from your device.

  2. 2

    Choose how to split

    Under Split by, pick Length per clip and set Seconds per clip (for example 30 for WhatsApp Status), or pick Number of parts for equal pieces.

  3. 3

    Pick a cut mode

    Fast copies the streams and is near instant but cuts on keyframes. Accurate re-encodes so every part is exactly the length you set.

  4. 4

    Split and download the ZIP

    Press Split video. When the parts are ready they are numbered in order and packed into one ZIP to Download.

Why use Aback Video for this

  • By length or by count

    Make clips of a fixed length for Stories and Status, or divide a video into a set number of equal parts.

  • Ordered file names

    Parts are named part-01, part-02 and so on, so they sort correctly and post in the right order.

  • Fast stream copy

    In Fast mode nothing is re-encoded, so even an hour-long video splits in seconds with original quality.

  • Local processing

    Splitting happens in your browser. The video and its parts are never uploaded.

Frequently asked questions

Will both halves be exactly the same length?

With Fast mode the cut lands on the nearest keyframe, so the halves can differ by a second or so. Accurate mode cuts exactly in the middle.

Will splitting make each part half the file size?

Roughly, yes. Each part keeps the original bitrate, so its size is close to its share of the duration.

Why are some Fast parts a second or two longer or shorter?

Fast mode can only start a new part on a keyframe, so each cut moves to the nearest one. Total length is unchanged; only the boundaries shift slightly. Choose Accurate if every part must be exactly the same length.

What length should I use for WhatsApp Status?

WhatsApp Status plays clips of up to 60 seconds in recent versions and 30 seconds in older ones. 30 seconds is the safe choice if your viewers may have older apps.

How do I get the parts onto my phone?

The parts come in one ZIP. On iPhone, open it in the Files app to unpack it; on Android, most file managers open ZIP files directly.

Is there a limit on the number of parts?

Up to 50 equal parts, or as many fixed-length clips as the video needs. Very short clip lengths on a very long video create many files, which takes longer in Accurate mode.

Is my video uploaded?

No. The splitting runs on your device with FFmpeg in WebAssembly, and the ZIP is created in the browser too.

Does splitting lower quality?

Not in Fast mode, which copies the streams exactly. Accurate mode re-encodes at a high quality setting, close to the original.

Can I split on a phone?

Yes. Fast mode works well on phones because it needs little memory. Accurate mode on a long video may be slow on older devices.

Related tools

Trim Video

Cut the start and end of a clip. Fast mode keeps the original quality.

Remove a Section

Delete a part from the middle of a video and join the rest.

Merge Videos

Join several clips into one video, in the order you choose.

Resize for Reels and Shorts

Make a video 9:16, 1:1, 4:5 or 16:9 with crop, blurred fill or colour bars.

Change Video Speed

Speed up or slow down a video from 0.25x to 4x, keeping the voice natural.

Reverse Video

Play a video backwards, with the sound reversed or muted.

Loop Video

Repeat a clip 2 to 20 times in one file, without re-encoding.

Boomerang Maker

Turn a clip into a forward-and-back boomerang loop.

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