Why You Need This
Merging videos is one of the most common editing tasks. You might need to join several short clips from a phone into one continuous video, combine multiple takes of a scene, or assemble a highlight reel from separate recordings.
Many free online merging tools have strict file size limits, add watermarks, or require lengthy uploads. Desktop software works but is overkill for a simple concatenation and often comes with a steep learning curve.
FastCut Pro lets you drag multiple files into the editor, arrange them in order, and merge them into a single output file. Everything happens in your browser, so there is no upload delay and no watermark. If the clips share the same codec and settings, the merge is lossless and nearly instant.
Step-by-Step Guide
- Step 1: Open fastcut.cc and switch to the Merge mode from the toolbar.
- Step 2: Drag all the video clips you want to join onto the drop zone. You can add files one at a time or select multiple at once.
- Step 3: Arrange the clips in the desired order by dragging them in the file list.
- Step 4: Preview the merged timeline to confirm the order and check transitions between clips.
- Step 5: Choose the output format. If all clips are the same format, select Lossless for instant merging.
- Step 6: Click Export and the merged video will be generated and downloaded to your machine.
Why Use FastCut Pro
- No Upload Required — Merge large files directly in the browser without consuming upload bandwidth.
- Lossless Quality — When clips share the same codec and resolution, they are concatenated without re-encoding.
- 100% Free — Join as many clips as you need with no file count limits or watermarks.
- Privacy First — All processing stays on your device. Your clips are never sent to a third party.
Pro Tips
- For best lossless results, record all clips with the same camera settings so they share identical codec, resolution, and frame rate.
- If clips have different resolutions, FastCut Pro will re-encode to normalize them. Choose a target resolution that matches most of your source files.
- You can trim individual clips before merging by double-clicking them in the file list and adjusting the in and out points.