Support Center

🔒 Is my video data really private?

Yes, absolutely! Your videos are processed entirely in your browser using WebAssembly technology. No files are uploaded to our servers. You can verify this by checking your browser's Network tab during compression - you'll see zero upload requests.

📱 Which browsers are supported?

VideoSOS works on all modern browsers that support WebAssembly:

• • Chrome 57+ (Recommended)
• • Firefox 52+
• • Safari 11+
• • Edge 16+
• • Mobile browsers on iOS 11+ and Android Chrome 57+

⚡ Why is compression taking a long time?

Compression speed depends on several factors:

• • Video file size and resolution
• • Your device's processing power
• • Quality settings chosen (lower quality = faster processing)
• • Browser performance (Chrome generally fastest)

For fastest results, try using "Low Quality" setting and ensure other browser tabs aren't using heavy resources.

📁 What video formats are supported?

Input formats: MP4, WebM, AVI, MOV, MKV, FLV, WMV, M4V, 3GP

Output formats: MP4, WebM, AVI (optimized for web compatibility)

💾 Is there a file size limit?

The limit depends on your device's available RAM. Generally:

• • Desktop: Up to 2GB files typically work well
• • Mobile: Up to 500MB recommended
• • Tablets: Up to 1GB usually fine

If you encounter memory issues, try closing other browser tabs or restarting your browser.

🛠️ The compressor isn't loading. What should I do?

Try these troubleshooting steps:

1. Refresh the page
2. Check your internet connection (needed for initial FFmpeg download)
3. Try a different browser (Chrome recommended)
4. Disable ad blockers or VPN temporarily
5. Clear browser cache and cookies

💡 How can I get the best compression results?

Follow these tips for optimal compression:

• • Choose MP4 format for best compatibility
• • Use "Medium Quality" for balanced size/quality
• • Reduce resolution if the original is very high (4K to 1080p)
• • For sharing on social media, "Low Quality" often sufficient
• • For archival purposes, use "High Quality"