Video Compressor
Compress video files to reduce size without losing too much quality.
RSPay’s Video Compressor is a client-side video optimization utility powered by WebAssembly FFmpeg. Compress large MP4, WebM, and MOV video recordings directly inside your web browser with selectable compression presets (Fast, Balanced, and Maximum), downscaling resolution options (1080p, 720p, 480p), and adjustable audio bitrates without transferring files to remote storage servers.
### Why Video Compression Matters
High-definition smartphones and digital cameras record crisp video, but raw files quickly swell into hundreds of megabytes. Uploading bulky videos to email attachments, messaging services like WhatsApp, or community platforms like Discord often fails due to strict file size limits. Compressing your videos solves these transfer headaches while retaining smooth playback quality.
### In-Browser WebAssembly FFmpeg Engine
Unlike conventional video tools that force you to upload private recordings to external cloud servers, RSPay’s Video Compressor operates inside your browser using WebAssembly (WASM).
* **Compression Presets:** Choose from Fast (-crf 28, ultrafast preset) for rapid turnarounds, Balanced (-crf 26, veryfast) for everyday clips, or Maximum Compression (-crf 30, faster) for the smallest possible file footprint.
* **Resolution Scaling:** Downscale 4K or 1080p footage to 720p or 480p to slash file size even further for quick mobile viewing.
* **Audio Bitrate Control:** Choose to preserve original audio fidelity or compress audio tracks to 128 kbps or 96 kbps.
### Performance & File Size Recommendations
Because video encoding relies directly on your device's CPU and browser memory, we recommend processing video files under 25 MB for the smoothest experience. Real-time progress indicators track execution percentage and elapsed processing time.
How to Use Video Compressor
- Click "Select Video" or drag and drop your video file into the workspace.
- Choose your preferred compression preset: Fast, Balanced, or Maximum Compression.
- Select an optional target resolution (Original, 1080p, 720p, or 480p) and audio bitrate.
- Click "Compress Video" to launch the WebAssembly rendering engine.
- Monitor the real-time progress bar and download your compressed video file when finished.
Frequently Asked Questions
- Is my video uploaded to a cloud server during compression?
No, video compression runs locally in your browser using an in-memory WebAssembly FFmpeg engine, keeping your personal recordings on your local device.
- What is the recommended video size for browser compression?
Files under 25 MB compress smoothly in most browsers. Larger videos can be processed, but execution speed depends directly on your device CPU and available memory.
- Which video formats are supported?
The WebAssembly engine accepts common web video formats including MP4, WebM, and MOV containers.