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FLV to MKV converter

Convert FLV to MKV online from any device with a free converter.

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We have already processed 4,137,459 files with total size of 6,335,620 Mbytes

About Conversion app

Convert your FLV files online. You can convert your FLV documents from any platform (Windows, Linux, macOS). No registration needed. Just drag and drop your FLV file on upload form, choose the desired output format and click convert button. Once conversion completed you can download your MKV file.

You even can perform more advanced conversions. For example you can convert password protected documents. Just expand LoadOptions and enter the password of your file. Or you can add a watermark to the converted MKV file. Expand the ConvertOptions and fill the fields for watermarking.

You can convert your FLV documents from anywhere, from any machine or even from a mobile device. The FLV converter is always available online and is completely free.

  • Convert WORD to PDF, EXCEL to PDF, PDF to WORD, POWERPOINT to IMAGE, VSDX to PDF, HTML to DOCX,EPUB to PDF, RTF to DOCX, XPS to PDF, ODT to DOCX, ODP to PPTX and many more document formats
  • Simple way to instant convert FLV to MKV
  • Convert FLV from anywhere - it works on all platforms including Windows, MacOS, Android and iOS
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APIs available

Convert popular document and image file formats in your app. The GroupDocs.Conversion APIs are available for .NET, Java, and many other platforms and languages.

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How it works

How to convert FLV to MKV

Step 1
Click inside the file drop area to upload FLV file or drag & drop FLV file.
Step 2
Click on Convert button. Your FLV files will be uploaded and converted to MKV 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 MKV file to your email address.
FAQ

Questions & Answers

FLV

Flash Video file format

FLV (Flash Video) is a container file format with the .flv extension. FLV is used to deliver audio/video content over the internet by using the Adobe Flash Player or Adobe Air. The data in FLV files are encoded in the same way as SWF files. The direct support was added to Flash Player 7 in 2003. Adobe systems created F4V in 2007 due to the restrictions of FLV.

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MKV

Matroska Video file format

MKV (Matroska Video) is a multimedia container similar to MOV and AVI format but it supports more than one audio and subtitle track in the same file. An MKV file is the Matroska multimedia container format used for video. MKV is based on Extensible Binary Meta Language and it supports several video and audio compression formats. The major difference between MKV and other video formats is that MKV is a container and not a codec. MKV files are saved with the .mkv file extension. MKV can incorporate audio, video, and subtitles in a single file even if those elements use different types of encoding. For example, you could have an MKV file that contains H.264 video and MP3 or AAC for audio. MKV also supports descriptions, ratings, cover art, and even chapter points.

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Other Supported Conversions

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

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