StretchDvr

StretchDvr is a browser-based AVI to MP4 converter designed for DVR footage.

It supports:

• 4:3 preserve mode or true 16:9 stretch mode
• Keep or remove audio
• Batch queue processing
• Simple mode by default
• Advanced encoding controls inspired by cloud converters

Privacy

All conversion processing runs client-side in the browser through WebAssembly.

• No file uploads
• No server-side video processing
• No account required

The FFmpeg core files are fetched as static assets for local execution. Your AVI and MP4 media data is processed on-device.

Current Advanced Controls

• Video codec and encoder preset
• CRF or custom video bitrate
• FPS and keyframe interval
• Optional custom resolution and fit mode
• Audio codec, bitrate, channels, sample rate, and volume
• Optional trim start and trim end timestamps

Local Development

Install dependencies:

npm install

Run the app:

npm run dev

Build for production:

npm run build

Lint:

npm run lint

Browser Support

V1 is optimized for Chromium-based browsers (Chrome and Edge).

Notes

• Very large files may use significant memory.
• Lower queue concurrency if your system becomes slow during conversion.