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Online H264 Trimmer

Need Custom Conversion?

Trim H264 clips in your browser by setting start and end timestamps, then export a shorter file without uploading to a server.

Drop a video here or browse (MAX 500 MB)

Max 500 MB per file

Preview (optional)

When your browser supports it, your video appears here. If preview does not load, you can still convert your file normally.

Start time
End time
Ready to trim
Ready
0%

Quick use cases

Social clip cutdowns Highlight reel prep Removing intro/outro segments

Workflow

  1. Upload H264 video
  2. Set start and end time
  3. Preview the selected range
  4. Trim and download

Processing notes

  • Processing runs locally in the browser.
  • Very long files may take longer on low-power devices.
  • Verify duration and playback after export.

Compatibility notes

  • H264 is widely used for web delivery, editing, and device playback.
  • Use metadata preview to confirm resolution, duration, and codec settings.
  • Validate exports on the platforms where you publish or review content.

Troubleshooting

  • If processing is slow, reduce file size or use a more powerful device.
  • If playback fails, try another target format from the Explore links.
  • If quality looks off, compare source resolution/bitrate with your export settings.

Video trimmer FAQ

Does this video trimmer upload my file to a server?

No. Processing runs in your browser using local compute; files are not sent to ConversionTab servers for this tool.

Which H264 workflows is this useful for?

Quick edits, QA checks, and one-off exports when you need a browser-based workflow without installing desktop software.

How do I verify the result?

Download the output, confirm duration and playback, and use the metadata viewer if your pipeline requires detailed stream checks.

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