How to Efficiently Convert Flash Video FLV to MKV?

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How to Efficiently Convert FLV Videos to MKV?

1. Import All FLV Videos

2. Select MKV Profile

Optional. Customize Video Parameters

3. Batch Convert FLV to MKV

🎬 Video Tutorial 🎬

Presumably most people are quite familiar with the video filetype with .flv extension. As a Flash video format, in the past two decade, it can be said to have been in the limelight for a while and even once used as a de-facto standard for many web-based websites.

However, since Adobe has officially ended support for Flash on December 31, 2020, the use of FLV format is doomed to decline.

Instead, Matroska is a free and open container format that can hold an unlimited number of video, audio and subtitle tracks in one .mkv file, and is commonly accepted by a large range of media players, editors, game consoles and other devices.

Therefore, if you're looking to convert your FLV videos to MKV, this guide is here to help!.

How to Efficiently Convert FLV Videos to MKV?

For efficient and user-friendly conversion, WonderFox HD Video Converter Factory Pro stands out as a top choice among all applications screened out from the Internet. The highlights boil down to:

📌 User-Friendly GUI: No technical skills required.
📌 Fast Conversion Speed: Utilize hardware acceleration.
📌 High-Quality Output: No significant loss in audio quality.
📌 Batch Conversion: Convert multiple FLV files to MKV at once.
📌 Additional Features: Include editing, recording, downloading, and more.

Download this all-in-one application and let's dive in. 👇

Step 1 - Import All FLV Videos

DownloadDownload and install WonderFox HD Video Converter Factory Pro on your PC.
Launch it and click on "Converter" from the main interface.
Click "Add Files" and import your FLV files.
Alternatively, you can also drag and drop them directly into the window.

💡 You can play the FLV files in the built-in player by clicking each preview button.
💡 The software supports batch processing, saving you a lot of time and effort.
💡 If interested, explore additional modules such as "Downloader", "Recorder", "GIF Maker", and "Toolbox" for extra functionality.

Step 2 - Select MKV as Output Format

Click the Format image on the right side to expand the full list of 600+ presets.
Go to the "Video" category and select "MKV".

💡 Similarly, you can also choose to convert FLV to MP4, MP3, AVI, MOV and other device-compatible formats.

Optional - Customize Video Parameters

If required, you're allowed to click "Parameter settings" to make some changes of video and audio settings separately for the converted MKV files based on your preferences, such as changing CBR to VBR, adjusting video frame rate, resolution, bitrate, aspect ratio, volume, and so forth. The click OK to save the settings.

💡 The app shows an estimated file size in the main interface before conversion.
💡 Adjust bitrate, resolution, and compression settings to reduce file size.
💡 Adjust the aspect ratio if your video looks stretched or has black bars.

🛠️ In addition, this application is also furnished with some basic editing features to help trim, split, merge, crop, rotate, flip or watermark video, even add subtitles and effects to video.

Step 3 - Start Conversion

Click the "inverted triangle" icon at the bottom and choose an output folder.
Finally, hit the "Run" button to start the batch conversion with hardware acceleration.

💡 Hardware acceleration (Intel QSV and Nvidia NVENC) is available for H264 and H265/HEVC encoding.
💡 The latest version of graphics card driver is required to utilize GPU acceleration.
💡 Learn more here: QSV Encoder| NVENC Encoder

Also Read: Convert MP4 to MKV | AVI to MKV | WMV to MKV | YouTube to MKV

Video Tutorial 🎬

For a visual demonstration of the FLV-to-MKV conversion, you may find the following video helpful:

Final Words...

We have to admit Flash video is gradually falling out of mainstream use, it's a good choice to convert FLV to MKV or other burgeoning formats for free use on various platforms, websites and devices. Compared with processing video with some online video converters, the desktop application has the inherent advantages. Specifically, you don't need to worry about pop-up ads, slow conversion speed, file size limit and poor network connection.

Free DownloadFree Download and give it a shot. I hope the recommended FLV to MKV converter will bring you a fresh new conversion experience and help you out. Cheers!