Online MKV to FLV converter | Free GroupDocs Apps

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Convert MKV to FLV

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We have already processed 8,914 files with total size of 18,799 Mbytes

Convert MKV files online instantly, no sign-up required. You can convert your MKV documents on any platform—Windows, Linux, or macOS. Upload your file, choose the output format, and press convert. When the process is done, your FLV file will be ready for download.

The MKV file's size and structure affect conversion time, though most files are processed in seconds. Advanced features allow you to convert password-protected documents and receive conversion results via email.

No matter where you are, convert your MKV documents seamlessly on any device, including smartphones. Available online anytime, this conversion app is completely free for basic scenarios.

Check our video

MKV

Matroska Video file format

MKV (Matroska Video File) is an open, flexible multimedia container format designed to store video, audio, subtitles, and metadata in a single file. It is widely supported by media players like VLC, MPC-HC, and tools such as MKVToolNix for editing and muxing. The format uses EBML (Extensible Binary Meta Language) for its structure, enabling advanced features like chapter support, multiple audio tracks, and seamless streaming capabilities.

FLV

Flash Video file format

FLV (Flash Video File) is a container file format developed by Adobe Systems for delivering video and audio content over the internet. It is commonly used with Adobe Flash Player, supported by media players like VLC, and can be created or converted using tools like FFmpeg or Adobe Animate. The format uses a lightweight structure with metadata tags, supports streaming via RTMP, and allows for embedding of interactive elements like captions and cue points, making it suitable for web-based video playback.

How it works

How to convert MKV to FLV

Step 1

Click inside the file drop area to upload MKV file or drag & drop MKV file.

Step 2

Click on Convert button. Your MKV files will be uploaded and converted to FLV result format.

Step 3

Download link of result files will be available instantly after conversion.

Step 4

You can also send a link to the FLV file to your email address.

FAQ

Questions & Answers

Do you offer a MKV conversion API for developers?

Absolutely! With the GroupDocs.Conversion API, you can integrate document conversion capabilities into your .NET, Java, Python, or Node.js applications.
Do I need a specific browser to convert MKV?

No, our converter works with all modern browsers, including Chrome, Firefox, Opera, and Safari. Just open the website and start converting.
When are my uploaded files removed from your servers?

Files remain on our servers for 24 hours before being permanently deleted to ensure your privacy and security.

Other Supported Conversions

You can also convert MKV into many other file formats. Please see the complete list below.

MKV TO MP4
MPEG-4 file format
MKV TO AVI
Avi file format
MKV TO MKV
Matroska Video file format
MKV TO MOV
QuickTime file format
MKV TO WEBM
WEBM file format
MKV TO WMV
WMV file format
MKV TO MP3
MP3
MKV TO AAC
Advanced Audio Coding
MKV TO AIFF
Audio Interchange File Format
MKV TO FLAC
Free Lossless Audio Codec
MKV TO M4A
M4A file format
MKV TO WMA
WMA file format
MKV TO AC3
AC3 file format
MKV TO OGG
OGG file format
MKV TO WAV
WAV file format

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