FLV Converter
Convert files to and from FLV online for free. Fast, secure, and high-quality file conversion with no sign-up or software required.
Maximum file size is 1GB
How it works
Three steps to your converted file
Everything happens in your browser tab - upload, pick a format, download. The heavy lifting runs on our servers.
Upload your file
Drag and drop, click to browse, or paste a URL. Batches take up to 20 files at once - 230+ input formats across video, audio, image, document, and archive types.
Choose an output format
Pick from over a hundred output formats. Filter by category or search by name - every option is open to everyone, no account needed.
Convert & download
Hit Convert and grab your download link moments later. Originals are erased when the job completes; results are cleared within about an hour.
What is an FLV file?
The FLV (Flash Video) format is a container file format defined by Adobe Systems for delivering synchronized audio and video over the internet via the Adobe Flash Player. It supports various codecs, historically Sorenson Spark and VP6, and later H.264 (MPEG-4 AVC) and AAC audio. FLV files were the dominant standard for web-based streaming video (YouTube, Hulu) during the 2000s, utilizing the RTMP (Real-Time Messaging Protocol) for transmission before being superseded by HTML5 standards.
How to open an FLV file
Since the End-of-Life (EOL) of Adobe Flash Player in 2020, browsers no longer support FLV natively. To play local FLV files, users must utilize third-party media players that maintain legacy codec support, such as VLC Media Player, MPC-HC, or MPV. For editing or conversion, tools like OBS Studio and HandBrake utilize the FFmpeg library to decode and process the container.
FLV Technical Info
- Full Name
- Flash Video
- Developed By
- Adobe Systems
- Initial Release
- 2002
- MIME Type
- video/x-flv
Why RunConvert
The fastest way to convert any file
Purpose-built for speed, privacy, and breadth of format support.
3,000+ conversions supported
Every popular and niche format covered - video, audio, image, document, archive and more. New formats added regularly.
Fast, cloud-powered
No queue, no waiting. Files are processed on high-performance servers and returned in seconds, even for large files.
Secure & private
Encrypted in transit and never shared with anyone. Uploads are erased the moment your job completes, and results shortly after.
Free - no account needed
Convert without creating an account - no credit card, no trial clock. Sign in only if you want history and higher daily limits.