Online video editor for clips, titles and music

What do you want to edit?

• Trim a video online without losing the useful moment

  Remove a slow opening or an unwanted ending with In/Out times.

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• Split a video online and rearrange its scenes

  Split at the playhead, remove a section or rearrange the story.

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• Add music to a video and balance the original sound

  Add an uploaded soundtrack and balance it against clip audio.

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• Add text to a video with timed, readable titles

  Time a manual title and choose its size and screen position.

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• Make a vertical video with a 9:16 timeline

  Build a 9:16 edit and review what a centered crop removes.

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• Make a square video with a 1:1 timeline

  Create a 1:1 version with a clear subject and readable text.

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• Make a photo slideshow with music and titles

  Turn still images into a timed sequence with music and titles.

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Choose a workflow that fits your project

Assemble a short video

Use the editor when you already have footage, still images or generated scenes and need a focused timeline with music and titles.

Create a missing scene

Use AI video generation first when you need new footage from a prompt or image. Add the resulting clip to your edit after generation.

Plan an advanced edit

If you need automatic subtitles, transcript-based editing, motion tracking, multicamera editing or a 4K timeline export, those functions are outside this editor's current scope.

What the editor supports

Export dimensions

• 16:91280 × 720 · MP4 · 30 fps
• 9:16720 × 1280 · MP4 · 30 fps
• 1:1960 × 960 · MP4 · 30 fps

From source clips to a finished MP4

1. Choose a project

   Open the editor and sign in. Upload the footage and images you want to use, or create scenes in the studio.

2. Build the sequence

   Click media to add it to the timeline. Put your strongest scene first, trim unnecessary time and split clips where the story changes.

3. Set the frame

   Choose 16:9, 9:16 or 1:1. Fill frame (crop) uses a centered crop; Fit entire clip keeps the whole image with black borders. Check the subject at the edges.

4. Add text and audio

   Time short manual titles, select an uploaded soundtrack and balance the original sound against the music.

5. Export and review

   Save the edit, export the MP4 and watch it from beginning to end. Check transitions, cropping, text and audio in the exported file before publishing.

Questions about the editor

Can I edit my own uploaded videos?

Yes. Add uploaded video or image media from your project to the timeline. You can also assemble clips generated in Kublaro. Sign in to save and export an edit.

What is the difference between AI video generation and video editing?

Generation creates a new clip from a prompt or source image. Editing arranges existing clips and images, adjusts their timing and adds titles, transitions and music to a final MP4.

What are the export sizes and project limits?

An edit supports up to 20 clips and a total of 180 seconds. Output is 1280 × 720 for 16:9, 720 × 1280 for 9:16, or 960 × 960 for 1:1, as MP4 video at 30 fps.

Does Kublaro automatically generate subtitles?

The editor currently supports manually entered, timed titles. It does not automatically transcribe speech or generate subtitles, and it does not offer transcript-based editing or motion tracking.

Why do transitions look different after export?

The editing preview shows the sequence, while transitions are applied when the final MP4 is rendered. A dissolve can shorten the finished video by overlapping adjacent clips. Review the exported result.