Convert videos to any format
Drag & drop video file here
Supports MP4, MKV, AVI, MOV, WebM and more
Drag & drop your WEBM video
Automatic conversion with optimal settings
Save your converted FLV file
FLV conversion is only needed for legacy Flash-based systems that cannot play WebM video.
WebM
WebM is an open, royalty-free video format developed by Google, optimized for web use. It uses VP9 or AV1 for video and Opus for audio, offering efficient compression ideal for HTML5 video and web applications.
FLV was the dominant web video format during the Flash era. While Flash is now deprecated, FLV files still exist in many archives and legacy systems.
WebM is the modern successor to FLV for web video. FLV is deprecated. Only convert to FLV for legacy compatibility.
Common scenarios for this conversion
Convert WEBM to FLV when your device or app doesn't support the original format.
Upload FLV instead of WEBM for better support on YouTube, Instagram, and TikTok.
Convert to FLV for seamless import into professional editing software.
Play WEBM files on any phone by converting to FLV.
Your files never leave your device. All conversion happens in your browser — no server uploads.
Hardware-accelerated conversion powered by WebCodecs and WebAssembly.
Convert between any video format combination.