Audio/Video Loop Trimmer

Trim a local clip to a precise, seamless loop in-browser.

Trim a local audio or video clip to a precise, seamless loop right in your browser. Cut audio, shorten a clip, and export the segment as WAV — free, private…

About Audio/Video Loop Trimmer

The Audio/Video Loop Trimmer is a free, browser-based tool for trimming a local audio or video clip down to a precise, seamless loop segment. You set start and end points, preview the loop in real time, then export the selected segment's audio as a 16-bit PCM WAV file. It runs entirely in your browser using the Web Audio API (decodeAudioData) and a built-in WAV encoder — your file is decoded locally, never uploaded, and there is no signup.

How to use Audio/Video Loop Trimmer

  1. Click 'Choose audio or video' to load a local clip (up to 500 MB); the tool auto-detects audio vs. video.
  2. Use the player and the timeline waveform to scrub through your clip while the playhead tracks the current position.
  3. Set the loop bounds by dragging the Start and End sliders, typing exact seconds into the number fields, or using 'Set start to playhead' / 'Set end to playhead' to mark the current position.
  4. Click 'Preview loop' to hear the selection repeat seamlessly between your start and end points; click 'Stop loop' to end it.
  5. Check the Start, End, and Length stats to confirm the segment, then click 'Export segment (.wav)' to download the trimmed audio.

Frequently asked questions

Are my audio or video files uploaded to a server?
No. The file is decoded and trimmed entirely in your browser using the Web Audio API — it never leaves your device, and nothing is uploaded.
Is it free and do I need an account?
Yes, it's completely free with no signup, account, or watermark.
What format does the export produce?
Export always saves the selected segment's audio as a 16-bit PCM WAV file, named with the original filename plus the start and end times (e.g. clip_0.00-3.50.wav).
Can it re-encode or export video?
No. Full client-side video re-encoding isn't performed. For video clips the preview loop lets you trim visually, and Export saves only the selected segment's audio track as a WAV.
Which file formats work, and is there a size limit?
Uploads are capped at 500 MB. Common types like MP3, WAV, AAC/M4A, MP4, and WebM decode reliably; less common codecs (such as FLAC or OGG) may trigger a heads-up warning and can fail to decode on export in some browsers.
How do I make the loop seamless?
Scrub to the exact moment, use 'Set start to playhead' and 'Set end to playhead' to mark precise points (sliders and number fields support 0.01-second steps), then use 'Preview loop' to confirm it repeats cleanly before exporting.

People also search for

Audio/Video Loop Trimmer is also known as trim audio online, cut a video clip, trim video to a loop, make a seamless audio loop, shorten a clip, audio loop maker.