Runs in browser · Zero file uploads
Video to audio
Extract audio from a video in this tab. Free when media tools are enabled.
Video tools stay hidden until NEXT_PUBLIC_ENABLE_MEDIA_TOOLS=1. Direct URLs still work for QA.
- MP4
- WebM
- MOV
- MKV
- About 100 MB or 3 minutes
- Phones may run out of memory
How to use Video to audio
Three steps. Your file is processed in this browser and is not uploaded by this tool. The ffmpeg engine downloads from a CDN; the video is not uploaded to ToolStudio.
- 1
Choose a video under the size limit.
Choose a video under the size limit.
- 2
Wait for ffmpeg if this is the first run.
Wait for ffmpeg if this is the first run.
- 3
Download the audio.
Download the audio.
Essential questions answered
Short answers for search and answer engines. Same facts as the FAQ.
How do I extract audio from a video?
Choose a video under the size limit, wait for ffmpeg if needed, then download the audio.
Is the video uploaded?
No. Conversion stays in the tab after the engine loads.
Why is the first run slow?
ffmpeg.wasm is a large WebAssembly build fetched once per browser.
Good for everyday workflows
Pull audio from an MP4
Pull an audio track from MP4, WebM or similar. Loads ffmpeg.wasm from a CDN on first use.
Save a lecture soundtrack
Pull an audio track from MP4, WebM or similar. Loads ffmpeg.wasm from a CDN on first use.
Convert a clip without a desktop app
Pull an audio track from MP4, WebM or similar. Loads ffmpeg.wasm from a CDN on first use.
Frequently asked questions
Is video to audio free?
Yes on ToolStudio when enabled.
What are the limits?
About 100 MB or a few minutes; phones may run out of memory.
Why is it hidden by default?
Enable NEXT_PUBLIC_ENABLE_MEDIA_TOOLS=1 when you want it public.
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Pick a tool. Get it done.
Free browser utilities on ToolStudio. No account. Most tools keep files on this device.