Convert videos to any format
Drag & drop video file here
Supports MP4, MKV, AVI, MOV, WebM and more
Drag & drop your FLV video
Automatic conversion with optimal settings
Save your converted MP4 file
Flash is deprecated and FLV files won't play in modern browsers. Converting to MP4 with H.264 ensures your content remains accessible on all modern devices and platforms.
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.
MP4 is the most widely used video container format, supporting H.264, H.265/HEVC, and AV1 codecs. It offers excellent compatibility across all devices, browsers, and platforms while maintaining a good balance between file size and quality.
FLV is deprecated with no browser support. MP4 is the universal standard. Converting FLV to MP4 is essential for content preservation.
Common scenarios for this conversion
Convert FLV to MP4 when your device or app doesn't support the original format.
Upload MP4 instead of FLV for better support on YouTube, Instagram, and TikTok.
Convert to MP4 for seamless import into professional editing software.
Play FLV files on any phone by converting to MP4.
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.