ConvertPort
Free online video splitter

Split Video Online

Crop one chapter or title screen, automatically find similar separators throughout your video, review the detections, and export every content part as a ZIP — without uploading your file to a server.

Auto-detect separator screensCrop the reference regionDownload parts as ZIPPrivate on-device processingReview before export

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ConvertPort's free video splitter helps you divide a long recording into multiple parts without desktop software. Mark one chapter or title screen, let the tool find similar separators automatically, remove false positives, and download every content segment as a ZIP. Everything runs locally in your browser.

How to split a video online

  1. Upload

    Drop or browse for an MP4, WebM, MOV, MKV, or AVI file up to 3 GB and three hours long. AVI files over 400 MB must use an MP4-compatible codec such as H.264.

  2. Reference

    Scrub to one separator screen, drag a crop around the stable part of the title card, and scan for similar screens.

  3. Review

    Check detected separators on the timeline, remove false positives, and add manual cuts if needed.

  4. Export

    Choose whether to skip separators or keep each title screen with the following content, then export at least two parts as a ZIP. Fast mode remuxes quickly; Accurate mode re-encodes to MP4 for precise cuts.

Popular use cases

  • Split a compiled lecture or course video at repeating chapter title cards.
  • Separate screen recordings that use the same intro slate between sections.
  • Divide a long interview or podcast video into topic-based clips.
  • Extract multiple segments from a single export without re-uploading to a server.

Supported video formats

Upload MP4, WebM, MOV, MKV, or AVI. Accurate export creates MP4 parts with H.264 video and AAC audio. Fast export preserves the source container when stream copy works. AVI files over 400 MB must use an MP4-compatible codec such as H.264; other AVI codecs are limited to 400 MB.

Private browser-based splitting

ConvertPort splits videos locally in your browser. Your file is not uploaded, stored, or shared — ideal for personal recordings, client deliverables, and confidential footage.

Video splitting best practices

  • Crop the static part of a title card when the text changes but the layout stays the same.
  • Review detected separators before export — similar scenes can occasionally trigger false positives.
  • Choose Skip separators for clean content clips, or Keep separator to start each part with its title card. Use Accurate export when cut points must match those ranges precisely.
  • Pair split parts with Trim Video when you also need to refine the start or end of individual clips.

Frequently asked questions about splitting videos online

Can I split a video automatically at title screens?

Yes. Scrub to one separator screen, crop the stable region, and scan. ConvertPort finds similar screens throughout the video so you can review them and export either the content between separators or each separator plus the following content.

Is my video uploaded to your servers?

No. The splitter processes videos locally in your browser. Your file is not uploaded, stored, or shared.

How many parts can I export?

Export requires at least two content parts. The tool supports up to 250 parts per ZIP export. You can skip separator screens entirely, or keep each separator with the content that follows until the next one.

What is the difference between Accurate and Fast export?

Accurate mode re-encodes every part to MP4 for precise cut points. Fast mode uses stream copy when possible, which is quicker but may align cuts to nearby keyframes.

Can I add manual cuts too?

Yes. You can combine auto-detected separator ranges with manual cuts on the timeline before exporting.

What is the maximum file size?

Videos can be up to 3 GB and three hours long. AVI files over 400 MB must use an MP4-compatible codec such as H.264; other AVI codecs are limited to 400 MB. Separator scans use hardware-accelerated frame sampling, and Fast export remuxes parts without a full re-encode.