How to Convert FLV to MKV Quickly – 3 Options You Can Try

About FLV

FLV (Flash Video) is an open-source video container format developed by Adobe Systems.  It contains audio, video, and text data. FLV is also used for transforming and storing digital videos. Additionally, it utilizes H.264 video codec and HE-AAC audio codec.

FLV videos can usually be played on VLC Media Player, PotPlayer, and GOM Player. By the way, the videos in FLV are difficult to edit according to Adobe.

About MKV

MKV (Matroska Video) is a digital multimedia container format. It features that can contain an endless number of audio, video, images, and subtitle tracks. MKV now primarily uses VP9, H.264, and H.265 video codecs. Also, it commonly utilizes AAC and Opus audio codecs. Users can play MKV videos on the VLC Media Player, DivX Player, and 5KPlayer.

Why Convert FLV to MKV and Vice Versa

FLV actually has low compatibility. If you want to play or edit FLV videos, it’s more convenient to convert them to the more universal MKV format. What’s more, Adobe products give poor native support for MKV. On condition that you want to play or edit MKV videos in Adobe products, you can convert MKV to FLV.

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M4V vs MKV, what are the differences between them and which one is better for your video? How to convert M4V to or from MKV? Just read this post!

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How to Convert FLV to MKV

Want to convert FLV to MKV with an easy method? I have found 3 practical methods to complete the conversions tasks: using MiniTool Video Converter (Desktop), MiniTool MovieMaker (Desktop), and Convertio (Online).

Option 1. Use MiniTool Video Converter (Desktop)

MiniTool Video Converter is a versatile file processing tool. It features video and audio conversion, video compression, videos/audio to text conversion, and screen recording.  MiniTool Video Converter supports free conversions of more than 1,000 formats, including FLV to MKV, 3GP to Xvid, TRP to MOV, OGV to FLV, WebM to VOB, and more.

MiniTool Video Converter also allows converting high-definition videos to various formats, such as 4K video to WMV, 1080p video to AVI, 720p to ASF, etc. Additionally, it enables you to perform batch conversions of up to 5 conversion tasks at a time. Below is a step-by-step guide on how to convert FLV to MKV with MiniTool Video Converter.

Step 1. Download and Install MiniTool Video Converter for Free

Click on the download button below to download and install MiniTool Video Converter. Then, run it.

MiniTool Video ConverterClick to Download100%Clean & Safe

Step 2. Import the FLV File

Drag your FLV file into the Add or drag files here to start conversion area to upload it.

Step 3. Configure MKV as the Converted Format

Click on the Settings icon to open a pop-up window. There, switch to the Video tab to choose MKV. Then, select a resolution for your converted file. Here, I choose 4K Video.

If you click on the + Create Custom option, you can customize the converted video parameters. Then, click on the Create button to apply these settings.

Step 4. Choose a Storage Path and Start the Conversion

Expand the Output option at the bottom to specify a storage path. Then, click on the Convert button to start the conversion.

Step 5. Check the Converted File

When the conversion task completes, the video converter will switch to the Completed module. There, click on the Play icon or the Folder icon to check or locate the converted file.

The above is how to complete the FLV to MKV conversion using MiniTool Video Converter.

MiniTool Video Converter is a can’t-miss FLV to MKV converter.Click to Tweet

Option 2. Use MiniTool MovieMaker (Desktop)

MiniTool MovieMaker is a feature-rich video editor that supports saving FLV files as MKV. It enables you to enhance your videos with transitions, filters, effects, sound effects, elements, and more. In addition, MiniTool MovieMaker allows you to change each file’s speed, volume, and color, including contrast, saturation, and brightness.

Now, I will show you the detailed FLV to MKV conversion with MiniTool MovieMaker.

Step 1. Download and Install MiniTool MovieMaker

Click on the download button below to download MiniTool MovieMaker. Then, follow the on-screen instructions to install and launch it.

MiniTool MovieMakerClick to Download100%Clean & Safe

Step 2. Import the FLV File

After launching MiniTool MovieMaker, close the promotion window to enter to the main interface. There, click on the Import Media Files area to import the FLV file.

Step 3. Drag the FLV File to the Timeline

Drag the uploaded file onto the timeline below. Here, you can also add audio effects, texts, transitions, filters, emotions, and elements to enrich your video. Or trim, crop, split, merge, reverse your video.

Then, click on the Export icon at the upper right of the Player window to enter the Export window.

Step 4. Set MKV as the Output Format and Start the Export Process

In the Export window, expand the Format option to choose MKV as the exported format. Then, click on the Export button to begin the export process.

Step 5. Check the Export File

When the export process completes, click on the Find Target button to view the exported video.

MiniTool MovieMaker is a practical tool to convert FLV to MKV.

Option 3. Use Convertio (Online)

Convertio is a useful converter designed for use in browsers. It supports converting 300+ formats and can perform 25,600 conversions. What’s more, Convertio allows you to configure advanced options like video quality, codec, aspect ratio, and more. It enables you to import files from Dropbox and Google Chrome.

The next steps are how to convert FLV to MKV with Convertio.

Step 1. Visit Convertio’s Homepage

Navigate to https://convertio.co/flv-mkv/ to enter Convertio’s homepage.

Step 2. Import the FLV file

Click on the Choose Files option to import the FLV file.

Step 3. Begin the Conversion Process

Click on the Convert button to begin the conversion process.

Step 4. Download the Converted File

When the conversion process ends, click on the Download button to save the converted file.

Using Convertio to convert FLV to MKV is a quick and effortless option. However, it only allows you to import a file smaller than 100MB.

How to Convert MKV to FLV

Some of you may want to convert MKV to FLV. MiniTool Video Converter can still do you a favor.  It also allows you to customize encoders for the output files, like MPEG-2, H.264, HEVC, VP9, MPEG-4, and Xvid.

What’s more, MiniTool Video Converter enables you to adjust other customizable parameters for the converted videos, such as frame rate, resolution, and bitrate.

MiniTool Video ConverterClick to Download100%Clean & Safe

Final Words

If you want to convert FLV to MKV, there are 3 converters you can’t miss: MiniTool Video Converter (Desktop), MiniTool MovieMaker (Desktop), and Convertio (Online).

The online tool is convenient and easy to use. However, it can only upload files up to 100 MB. For smooth and large-size FLV to MKV conversions, MiniTool Video Converter and MiniTool MovieMaker are the priority.

If you have any problems when using MiniTool Video Converter or MiniTool MovieMaker, please send an email to [email protected] to ask for help. Also, you can directly send me a message on X. I will help you as quickly as possible.