MP4 to FLV Converter - Transform Videos to Flash Video Format Free

The most reliable way to convert MP4 videos to FLV (Flash Video) format. FLV was widely used for web video streaming and is still needed for legacy Flash applications and older streaming systems. All processing happens in your browser - your files never leave your device.

🔒 100% Private - Files never uploaded🚀 Lightning fast browser conversion📺 Perfect for legacy Flash systems💰 Completely free - No registration

MP4 to FLV Video Converter

Upload your MP4 file and convert it to FLV format for Flash compatibility

Convert to FLV

Drop your video file here

or click to browse files

Supported formats: MP4, AVI, MOV, WEBM, MKV

Maximum file size: 500 MB

Loading FFmpeg... Please wait while the video converter initializes.

Usage Tips

  • • All conversions are processed locally in your browser for privacy
  • • Maximum file size: 500MB
  • • Higher quality settings may take longer to process
  • • Use a modern browser like Chrome, Firefox, or Safari for best results

How to Convert MP4 to FLV in 3 Simple Steps

1

Upload Your MP4 File

Drag and drop your MP4 video file or click to browse. Files up to 500MB supported. Your file stays secure on your device throughout the conversion process.

2

Choose Conversion Settings

Select your preferred video quality and encoding options. FLV format is optimized for smaller file sizes and streaming compatibility with older systems.

3

Download Your FLV File

Click convert and download your FLV file instantly. The Flash Video format will be optimized for legacy compatibility and streaming performance.

Backward Compatibility Focus

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Privacy & Security

All conversion happens locally in your browser. Your files never leave your device, ensuring complete privacy and security.

Lightning Fast

Instant conversion without uploading or downloading. No waiting time, no file size limits, just pure speed.

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High Quality Output

Maintain original quality with advanced conversion algorithms. Choose from multiple quality settings to suit your needs.

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Completely Free

No hidden costs, no subscriptions, no watermarks. Use our converter as many times as you want, absolutely free.

MP4 to FLV Converter FAQ

What is FLV format and when do I need it?

FLV (Flash Video) is Adobe's video format designed for Flash Player. You need FLV when working with legacy Flash applications, older streaming systems, or maintaining compatibility with systems that haven't been modernized to support newer video formats.

Is FLV format still relevant in modern web development?

While FLV is largely obsolete for modern web development due to Flash being discontinued, it's still needed for legacy system maintenance, archived content, and applications that cannot be easily upgraded to modern video formats.

Will converting MP4 to FLV reduce video quality?

Yes, FLV conversion typically results in smaller file sizes and lower quality compared to MP4, as FLV is optimized for streaming efficiency rather than maximum quality. This trade-off was designed for bandwidth-limited environments.

Can modern browsers play FLV files?

Modern browsers no longer support Flash Player natively, so FLV files cannot be played directly in browsers without additional plugins or players. FLV is primarily used for legacy applications and systems.