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MP4 Cutter Online

Cut MP4 clips precisely for sharing, support tickets, or product demos.

1. Add Your Video

Drag and drop a file or paste a video URL

Drop your file here to get started

or click to browse

Maximum file size: 500MB

2. Set Trim Points

Specify the start and end times for your trimmed video

Intro

MP4 is the most common video format on the web, and cutting MP4 clips is a daily task for teams. This tool extracts a clean segment by start and end time and returns a new MP4 file that is ready to share.

The cutter favors speed by using keyframe-aligned cuts. That keeps processing fast and preserves quality, but it can shift the cut slightly on some files. If you require exact frame accuracy, re-encoding the clip is the best option, and a precise mode can be added later.

For teams that cut MP4 clips frequently, the API enables automation and consistent results. Submit multiple jobs programmatically and track outputs without manual uploads.

Because MP4 is supported by nearly every player and platform, keeping MP4 output avoids compatibility issues when you share results in chat tools, support systems, or review platforms.

Keyframe-aligned cuts are the fastest and preserve the original quality. If you need a perfect frame boundary, re-encode the clip. For most use cases, a small timestamp adjustment is enough.

How it works

  1. Upload an MP4 file or paste a direct MP4 URL.
  2. Set start and end times for the clip you need.
  3. Create the MP4 clip and download the output.

Use cases

  • Extract MP4 highlights for marketing or social media.
  • Create short repro clips for support and engineering.
  • Cut down recordings before sharing with a team.
  • Prepare MP4 segments for merging or conversion.
  • Generate review clips for stakeholders or clients.

Formats and limits

  • Input: MP4 only on this page.
  • Output: MP4.
  • Cuts are keyframe-aligned for speed and quality preservation.
  • Processing time depends on clip length and file size.
  • If your MP4 is non-standard, re-encode it to H.264 before cutting.

After processing

When your mp4 cutter job completes, you will receive a downloadable output URL. You can save the result locally, share it with a teammate, or feed it into another tool such as the trimmer or converter. For repeatable workflows, use the API to store outputs in your own system and automate the next step.

Tips

  • If a cut is slightly off, adjust the timestamp to the nearest keyframe.
  • For exact frame-level cuts, re-encode in your own workflow.
  • Keep clips short to reduce processing time and file size.
  • Use the general trimmer if your input is WebM.
  • Automate recurring MP4 cuts with the API.
  • Standardize MP4 files with the converter if you see errors.

Deep dive

MP4 cutting avoids re-encoding, so it is fast once the file is uploaded. Large files still take time to upload, so smaller inputs lead to quicker results.

If an MP4 fails to process, re-encode it to a standard H.264 MP4. This resolves most compatibility issues and keeps cuts reliable.

If you are reviewing many large files, consider using smaller proxy MP4s for quick cuts and then reapply timestamps to the full files.

For broadcast-level accuracy, plan for a re-encoded workflow where exact frames matter.

Workflow checklist

  • Use standard H.264 MP4 inputs for best compatibility.
  • Trim a short test clip to validate timestamps.
  • Re-encode if cuts are off or files fail to process.
  • Batch cutting with the API for large libraries.
  • Keep a clean naming scheme for outputs and job IDs.

FAQ

Why is my MP4 cut not exactly at the timestamp?

Fast MP4 cutting aligns to keyframes. This preserves quality but can move the cut slightly. Adjust the time or re-encode for exact precision.

Can I cut MP4 without re-encoding?

Yes. The tool uses stream copy for speed, which avoids re-encoding.

Will the output stay as MP4?

Yes. The output is an MP4 file that you can download and share.

Does the MP4 keep subtitles or metadata?

Embedded tracks may not be preserved in all cases. If you need advanced track handling, consider processing via the API or re-encoding.

Why is the output file larger?

In most cases the size should be similar or smaller. File size can vary if the original had unusual encoding settings.

What MP4 codecs are supported?

Most H.264 MP4 files work well. If a file fails, re-encode it to a standard H.264 MP4 and try again.

Can I batch cut MP4 files with an API key?

Yes. Use the API to submit multiple trim jobs and track each by job ID.

Cut MP4 clips at scale

If you manage large MP4 libraries, the API makes it easy to submit trimming jobs in bulk. You can integrate it into pipelines and retrieve output URLs automatically.

Pair trimming with conversion if you need consistent codecs across outputs.

Batch cutting is straightforward: loop through timestamps, submit jobs, and store each output URL for distribution or review.

  • POST /video/trim with start/end timestamps
  • GET /jobs/:id for output URLs
  • Use /video/convert to normalize formats
View API docsDeveloper overview

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