FLV to MKV Converter

Select files for conversion or just drag and drop them to the upload area

How to convert FLV files to MKV online?

Step 1.

Upload FLV-file

Click "Choose File" button to select a flv file on your computer. FLV file size can be up to 50 Mb.
Step 2.

Convert FLV to MKV

Click "Convert" button to start conversion.
Step 3.

Download your MKV

Let the file convert and you can download your MKV file right afterwards.

Information about FLV and MKV file formats

Name FLV MKV
Full name FLV - Flash Video MKV - Matroska
File extension .flv, .f4v, .f4p, .f4a, .f4b .mkv, .mk3d, .mka, .mks
MIME type video/x-flv video/x-matroska, audio/x-matroska
Developed by Adobe Systems www.matroska.org
Type of format Media container Container format
Description Flash Video is a container file format used to deliver video over the Internet using Adobe Flash Player version 6 and newer. Flash Video content may also be embedded within SWF files. Flash Video used to be the de facto standard for web-based streaming video. Notable users of it include Hulu, VEVO, Yahoo! Video, metacafe, Reuters.com, and many other news providers. The Matroska Multimedia Container is an open standard free container format, a file format that can hold an unlimited number of video, audio, picture, or subtitle tracks in one file. It is intended to serve as a universal format for storing common multimedia content, like movies or TV shows.
Technical details There are two different video file formats known as Flash Video: FLV and F4V. The audio and video data within FLV files are encoded in the same manner as they are within SWF files. The F4V file format is based on the ISO base media file format and is starting with Flash Player 9 update 3. Both formats are supported in Adobe Flash Player and developed by Adobe Systems. Matroska is similar in concept to other containers like AVI, MP4, or Advanced Systems Format (ASF), but is entirely open in specification, with implementations consisting mostly of open source software.
Associated programs Adobe Flash Player VLC Media Player
Wiki https://en.wikipedia.org/wiki/Flash_Video https://en.wikipedia.org/wiki/Matroska