How to convert FLV to MKV
- Add your .FLV file - drop it in the box above or click to browse.
- Convert it to .MKV in a few seconds.
- Download your new .MKV file.
What to expect
- Matroska is flexible enough that the FLV streams can often be remuxed into MKV without re-encoding, keeping the original quality.
- MKV supports multiple audio, subtitle and chapter tracks, though a basic FLV supplies only single video and audio streams.
- The output is an open-standard container playable in VLC and Windows 11's Media Player without Flash.
Frequently asked questions
Is FLV to MKV lossless?
It can be close to lossless. MKV (Matroska) is a flexible container, so the FLV's existing video and audio streams can often be repackaged (remuxed) into MKV without re-encoding, preserving the original quality.
Why convert FLV to MKV?
MKV holds video, multiple audio tracks, subtitles and chapters in one file and is widely supported by modern players, unlike FLV which was built for the dead Flash Player.
What opens an MKV file?
VLC plays MKV free on any platform, and Windows 11 opens it in the built-in Media Player. The result needs no Flash.
What does MKV add over FLV?
MKV can store several audio tracks, subtitle tracks and chapters, but a plain FLV source usually provides only one video and one audio stream to carry into it.
Programs that convert FLV: Miro Video Converter · Any Video Converter FREE · Aimersoft iTransfer for Windows · AviDemux · Free Studio · Freemake Video Converter · MediaCoder · Movavi Video Converter Personal
