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How to convert FLV to MKV?
You can convert FLV to MKV with MConverter in three easy steps:
Choose FLV files from your device
At the top of this page, drag and drop your FLVs. You can also click to select FLV files using your operating system's file picker. Another method is to press the keyboard shortcut Ctrl+V (⌘+V on Mac) to paste an FLV file you have copied to clipboard. Converting a folder with FLV files to MKV is also supported: simply paste or drag and drop it.
Click or tap on MKV from the list of target formats
Alternatively, you can use the search field to quickly find the format you need, whether it's MKV or something else.
Download your MKV files, after MConverter has finished processing them
There's an option to automatically download the converted MKV files, so you don't have to press the download icon for each MKV. On desktop platforms, you can download the MKV files to a different folder by clicking on SAVE TO... You may see a share icon as well. Use it to directly share the MKVs with other apps.
About the formats
Video file formats
Macromedia, now Adobe
FLV is a Flash video file. It was created for online streaming of video content using the Adobe Flash Player. However, since Flash reached end-of-life in 2020, the video format is now only used by Adobe Animate and playable by some third party apps like VLC.
Video file formats
MKV files are MatrosKa Video files. Like the Russian Matryoshka doll, which contains multiple smaller dolls nested inside each other, the MKV format can contain multiple video, audio, and subtitle tracks inside a single file. This makes it convenient to have one video with a number of audio and subtitle tracks in different languages, all inside a single playable file.
Common questions about converting FLV to MKV
Can I convert FLV to MKV in bulk?
Yes, MConverter supports batch converting of multiple FLVs to MKVs simultaneously. You can even drag and drop folders containing FLVs to convert to MKV. Pasting FLV files and folders copied in the clipboard also works: use Ctrl+V.
Can I convert an FLV file to MKV, if its size is 1 GB?
Yes, with MConverter Premium you can convert big FLVs, up to 1 gigabyte each. The free version lets you convert files up to 100 MB. If you need to convert FLV files over 100 megabytes, try MConverter Premium.
Is converting FLVs to MKV safe with MConverter?
Yes, we encrypt your connection using industry standards. Plus, your FLV files are only accessible by you. 4 hours after the conversion completes, they are automatically deleted from MConverter’s servers. You can also delete your FLVs and other converted files immediately after finishing the conversion by clicking the bin icon. Join others who have trusted us to convert over 5,264,996 files so far.
How long does it take to convert FLV to MKV?
For most videos, the wait could be a few minutes or less. However, MConverter also supports converting larger videos, meaning that it could take a while (up to over an hour, for example).
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