Convert video to FLV

Free online conversion of 3GP, AVI, GIF, MKV, MOV, MP4, MPG, WEBM, WMV to FLV

Local-first

Drop files here

or click to select files. Supports MP4, AVI, MPG, MOV, FLV, 3GP, WEBM, MKV, WMV, GIF.

Using our online video to FLV converter tool, you can easily convert multiple video formats to FLV format, completely processed online without uploading to the server, ensuring the security of your data. This tool supports multiple video formats such as MP4, AVI, MPG, MOV, 3GP, WEBM, MKV, WMV, GIF, etc. Multi-format support: Compatible with a wide range of video formats, such as MP4, AVI, MPG, MOV, 3GP, WEBM, MKV, WMV, GIF, etc., to meet your needs for processing various video files. FLV format output: Quickly convert video files to FLV format to ensure playback compatibility on web pages and is suitable for widespread use. Purely online processing: All conversion processes are completed in the local browser, without uploading files to the server, ensuring your privacy and data security.

Convert video to FLV online

FLV (Flash Video) is a compact container long used for web streaming and screen recordings. Although Flash itself is retired, many older players, authoring tools and existing archives still rely on FLV files. This free tool converts MP4, AVI, MOV, MKV, WMV, 3GP, WEBM and MPG to FLV directly in your browser.

Runs locally, nothing uploaded

Conversion uses WebAssembly (ffmpeg.wasm) and stays entirely on your device — no upload, no account, no watermark and no file-count limit, so you can convert as many clips to FLV as you need.

Tune bitrate and size

Adjust the video bitrate, resolution, frame rate and audio before converting to balance FLV quality against file size — handy for keeping streaming clips small or matching an older player's requirements.

Frequently asked questions

How do I convert a video to FLV?

Open the tool, add your MP4, AVI, MOV, MKV, WMV, 3GP, WEBM or MPG file, keep FLV as the output and click convert. The FLV is generated in your browser and downloads immediately.

Is the video to FLV converter free?

Yes, completely free — no sign-up, no watermark and no limit on the number or size of files you convert.

Why convert to FLV?

FLV stays useful for older streaming players, legacy authoring software and existing Flash-based workflows or archives that still expect the FLV format.

Are my videos uploaded to a server?

No. Processing runs locally in your browser through WebAssembly, so your videos never leave your device.

Which formats can I convert to FLV?

You can convert MP4, AVI, MOV, MKV, WMV, 3GP, WEBM and MPG to FLV, with adjustable bitrate and resolution.

Is Flash still needed to play FLV?

You don't need Flash to create FLV files here. To play them, use a modern media player such as VLC, since browsers no longer support Flash.