How to convert MP4 to FLV
- Add your .MP4 file - drop it in the box above or click to browse.
- Convert it to .FLV in a few seconds.
- Download your new .FLV file.
What to expect
- FLV is a legacy Flash container; H.264/AAC streams may copy losslessly, older codecs require a lossy re-encode.
- No Flash Player is needed; VLC plays FLV directly.
- MP4 is generally more widely supported than FLV today.
Frequently asked questions
Will converting MP4 to FLV reduce quality?
FLV commonly carries H.264 video and AAC audio, so the streams can sometimes be copied losslessly into the FLV container. If older FLV codecs (like H.263 or VP6) are targeted instead, the video is re-encoded and quality drops.
Why convert an MP4 to FLV?
FLV is the Flash Video format used by streaming sites through the 2000s, so it is used for compatibility with legacy Flash-based players and tools that still expect it.
Where does an FLV file play?
VLC opens FLV on any platform without Flash. Flash Player is end-of-life since December 2020, so for broad compatibility MP4 is generally the better target.
Is FLV safe and still practical?
An FLV file is passive video data, not interactive Flash (SWF), so it is safe to open. Given Flash's demise, converting back to MP4 usually gives wider playback support with no quality loss.
Programs that convert MP4: Miro Video Converter · Adobe Premiere Pro · Aimersoft DRM Media Converter for Windows · Any DVD Converter · Any Video Converter FREE · AviDemux · DVD Ripper+Video Converter Ultimate · FormatFactory
