FLV (Flash Video) was Adobe Flash's video format, widely used for internet video before HTML5. Since Flash is discontinued, FLV files need conversion.

Can I still play FLV files?

FLV files require special players since modern browsers removed Flash. Converting to MP4 makes them playable anywhere.

Will my old video quality be preserved?

Use High Quality setting to preserve as much of the original quality as possible during conversion.

FLV to MP4 Offline Converter

Convert FLV Flash video files to MP4 format completely offline in your browser

No Upload 100% Private Free

Loading Video Processing Engine

This tool uses FFmpeg.wasm for video processing. The first time you use it, it will download the processing engine (~25MB). This only happens once and enables powerful offline video conversion.

Initializing video processor...

Drop your FLV videos here

or click to select FLV files

Conversion Settings

Video Quality

Output Resolution

Fast mode (prioritize speed over compression)

Rescue Your Old Flash Videos

Legacy Flash Videos

Convert FLV files from the Flash era to universally compatible modern MP4.

Easy Sharing

Share your videos on any platform, device, or social media without issues.

Size Optimization

Reduce file sizes while maintaining quality for easier storage and sharing.

MP4 Works Everywhere

Android Devices

Windows PCs

Web Browsers

Smart TVs

Social Media

Game Consoles

Email Attachments

Cloud Storage