Can I join videos with different formats or resolutions?

Yes. If direct joining isn’t possible, trimy will fall back to a compatibility path (which may re-encode) so you still get a result.

Does joining always re-encode?

Not always. When clips are compatible, trimy can join efficiently. For mixed codecs, frame rates, or sizes, re-encoding may be required to produce a single playable output.

Are my videos uploaded anywhere?

No. Your clips stay on your device. Processing happens locally in your browser (the join engine may be downloaded to your browser on first use).

What’s the best output format for sharing?

MP4 is usually the best choice for maximum compatibility across phones, browsers, and messaging apps.

How many clips can I join?

There’s no hard limit, but performance depends on your device. For smoother exports, keep clips reasonably sized and close other heavy tabs.

How to Join Videos Online

Combine multiple clips into one export in your browser — trim each segment, reorder the timeline, and render with no uploads.

Open trimy Read Tutorial

Why join with trimy

Timeline Workflow

Trim each clip, reorder them, and render a single joined export.

Compatibility Fallbacks

Mixed codecs or sizes? trimy can fall back to a compatibility path to ensure you still get an output.

Privacy-First

Everything runs locally in your browser — your videos stay on your device.

Step-by-Step Tutorial

Load multiple clips

Add two or more videos — drag & drop works great.

To join videos, load at least two files. You can select multiple videos in the file picker, or drag them onto the page.

Load multiple formats (MP4, MOV, MKV, AVI, WebM)
Each loaded file becomes a clip on the timeline
Your files stay local — no uploads

Open trimy →

Frequently Asked Questions

Ready to join your clips?

Load your videos and render a single combined export.

Open trimy