Split and compress videos to the length you need

One recording. A continuous sequence.

1. Choose a video.

2. Adjust the length and output settings.

3. Create MP4 copies, download them, and clear local temporary files.

Keep the original recording. These are re-encoded copies; overlapping footage helps show continuity, but does not certify evidence authenticity or platform acceptance.

What the settings do

• Part length is the longest a single part can be, in seconds. A 65-second video with a 60-second part length becomes two parts.
• Overlap repeats the end of one part at the start of the next, so a viewer can follow the sequence across files. It must be shorter than the part length. With 60 seconds and a 10-second overlap, part 2 starts at 0:50.
• Target size is the size each part is encoded for, in MB. The tool spends that budget as video quality, up to 8 Mbps at 720p or 16 Mbps at 1080p, with a minimum of 1.2 or 2.5 Mbps. If a finished file measures larger than the target, it is encoded again at a lower bitrate.
• Resolution is 720p or 1080p. The platform settings fill these values in as a starting point. They are not official rules, so check the submission screen.

What re-encoding means

• Every part is a new file. The picture is encoded again as H.264 and the sound as AAC at 128 kbps, and the result is saved as MP4 with its index at the front so it starts playing quickly.
• Because it is a new encode, the pixels are not identical to the original. Keep the original recording. The parts are copies for submitting, not a replacement.
• Picture and sound are written together. In our test, both streams of each part had exactly the same length.

Measured example

We split a generated 65-second test video of 5.3 MB (320 × 180, with sound) using the Coupang settings: 60-second parts, 10-second overlap, 28 MB target, 720p. Part 1 came out at 60.0 seconds and 27,805,959 bytes. Part 2 covered 0:50 to 1:05, 15.0 seconds and 15,237,537 bytes. Both were H.264 and AAC at 1280 × 720, played to the end, and decoded without errors. The ten seconds shared by the two parts matched closely (50.9 dB PSNR). The ZIP held the same two files as the single downloads. Note the sizes: the tool spends the target size as its budget, so this small low-resolution source came out far larger than it went in (43 MB in total from 5.3 MB). For a small source, choose a smaller target size.

How to check your result

1. Play each part to the end and check that picture and sound stay together.
2. Compare the file sizes in the result list with the limit shown on the submission screen.
3. Look at the overlap: the same footage should appear at the end of one part and at the start of the next.
4. Use the ZIP only if you want everything in one file. The files inside are the same as the single downloads.

Limits

• The output is 720p or 1080p. A low-resolution source is scaled up, and the file can be larger than the source.
• Encoding runs on your device, so a long video takes as long as your computer needs.
• The tool cannot certify that a video is authentic or that a platform will accept it.

Platforms and submission limits

Coupang return inspection defaults to a recommended 28 MB. Shopee Singapore return/refund accepts up to 30 MB and 60 seconds; Taiwan allows up to 100 MB and 3 seconds–10 minutes. Check the submission screen for other platforms and purposes.

Frequently asked questions