FLV to MKV Online
Free FLV to MKV converter — no signup, no watermark. Upload your file and download the result in seconds. Files are deleted automatically after conversion.
Drop your files here or browse local directory
Up to 150 MB per file · 1 file at a time · 56 formats
Vectorization Settings
Controls how your image is converted to vectors
Better source = better vectors
Upscales your image before vectorization for sharper, cleaner results. Takes a few extra minutes.
Image Type
Output Detail
Auto = smooth curves with fewer nodes. High = more detail, more nodes.
Color Count
Fewer colors = fewer objects. Best for logos. Auto lets the engine decide.
Remove Background
Auto-detect and remove background color
Black & White Mode
Ideal for stamps, signatures, ink drawings
FLV
— Flash VideoFLV was the standard format for web video during the Flash era and is still required by some legacy systems and streaming setups.
All FLV conversionsMKV
— Matroska VideoMKV is an open, flexible container supporting multiple audio/subtitle tracks. Popular for high-quality video archiving and playback.
All MKV conversionsOther FLV conversions
Other formats to MKV
How to convert FLV to MKV
Upload your FLV file
Click the upload area or drag and drop your FLV file. Files up to 150 MB are supported.
Convert to MKV
MKV is pre-selected as the output. Click Convert — most files finish in under 30 seconds.
Download your MKV file
Your converted MKV file is ready instantly. Files are automatically deleted after 3 hours for your privacy.