Extract Thumbnails and Audio from Video
Extract thumbnails and audio from video without any editing software — right in your browser. Perfect for meeting recordings, YouTube materials, and lecture content.
1.8 GB → 48 MB
Audio extracted from 90-min recording for AI transcription
Why This Takes Longer Than It Should
Pulling one still frame and an audio track out of a video is a tiny job that full editing suites make enormous — gigabytes to install, a slow launch, minutes to export. Online converters aren't a better answer: uploading a multi-gigabyte recording is impractical to begin with, and putting a meeting recording on someone else's server is a decision in itself. Running FFmpeg inside the browser does the same work without the file ever leaving the device.
What's Actually At Risk Here
- ✓Meeting and lecture recordings contain names, internal terminology, and whatever was on the shared screen. Not having to pick an upload destination is the point.
- ✓FFmpeg runs as WebAssembly inside the browser, so the conversion itself never touches the network.
- ✓Extracted frames and MP3s are written straight to your device — no intermediate copies left on a server.
3 Steps to Get It Done
Click any tool name below to go directly to that tool.
- 1Video Trim
Set IN/OUT points to extract just the clip you need
- 2Extract Frames
Save any frame as a PNG image to use as a thumbnail
- 3Extract Audio
Extract the audio track as MP3 or WAV
Where People Get Tripped Up
These catch people out even when the steps are followed correctly. Skimming them first saves a redo.
- Speed depends on your CPU. For anything over an hour, trimming to the section you need first makes extraction dramatically faster.
- Processing uses your device's memory. On mobile — Safari on iOS included — very large videos can exhaust it.
- Extracted frames come out at the source resolution. For thumbnails, resize and compress afterwards.
Frequently Asked Questions
- What format do extracted thumbnail frames come out in?
- PNG, at the source video's full resolution — a 4K video yields 4K frames. For thumbnail use, resize and compress afterwards. There's no transparency involved, so converting to JPEG or WebP preserves quality fine.
- Which video formats are supported, and which browsers work?
- It reads major formats including MP4, MOV, WebM, AVI, and MKV. FFmpeg runs via WebAssembly, so current Chrome, Edge, Safari, and Firefox all work — Safari on iOS included. Note that trimming and splitting write MP4 without re-encoding, so sources whose codecs cannot sit in an MP4 container (VP8/VP9 WebM, for instance) cannot be cut; convert them with Video Compress first. Large videos use device memory, which can run short on mobile.
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