Video Viewer Online
Play, inspect, control playback speed and snapshot local videos
100% Private & In-Browser
Processed locally using client-side JavaScript. Your files and data never touch any server.
Instant & Unlimited
No registration, no waiting queues, and no limits on file conversions or generations.
What is Video Viewer Online?
Play and inspect local video files right in your browser with zero uploading. Supports MP4, WebM, MOV, and MKV with frame-by-frame scrubbing, 0.25x–2x playback speed, Picture-in-Picture, and high-resolution frame screenshot capture.
How to use Video Viewer Online
Open Video Viewer Online in any modern web browser on your computer, tablet, or smartphone.
Select, drag, or drop your file directly into the Video Viewer Online workspace.
The tool processes your data in real time directly on your device using WebAssembly-compiled FFmpeg cores and browser WebCodecs hardware APIs.
Copy your generated result to your clipboard, preview the output, or save your file with a single click.
- 100% Client-Side In-Browser Execution — your inputs, files, and generated data never touch any remote cloud server.
- Instant Unlimited Free Usage — no daily limits, feature gates, paywalls, or account registrations required.
- Real Media Decoding — a WebAssembly FFmpeg core processes your audio and video on your own CPU.
- Play, inspect, control playback speed and snapshot local videos
- Running a quick one-off task — once loaded, most tools keep working even if the connection drops.
- Play and inspect local video files right in your browser with zero uploading. Supports MP4, WebM, MOV, and MKV with frame-by-frame scrubbing, 0.25x–2x playback speed, Picture-in-Picture, and high-resolution frame screenshot capture.
- Content creators, podcasters, video editors, and audio engineers who need to demux and extract audio/video streams directly on local CPU cores without installing software.
- Handling private or confidential material that should not be uploaded to third-party cloud services.
Frequently Asked Questions
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