Usually, the movies we download from the Internet are in RMVB format. Full named as RealMedia Variable Bit Rate, RMVB is a variable bit rate (VBR) extension of the RealMedia Multimedia Digital Container format developed by RealNetworks. The video format is initially positioned in the video streaming application, and different compression ratios can be set according to different network transmission rates, so that real-time transmission and playback of image data on a low-rate network can be realized. The advantage is that the file is small and easy to spread on the Internet. The disadvantage is that the clarity is not very satisfactory. If you want to play RMVB files on some portable players such as some mobile phones, MP4 players, PSP, etc., you need to convert RMVB to MP4. Here we will show you how to convert RMVB to MKV with 5 different methods.

 

Part 1: Convert RMVB to MKV with Leawo Video Converter

When talking about video converting from one format to another format, the first video converter that comes to my mind is Leawo Video Converter. As a professional video converter, Leawo Video Converter is able to convert video and audio files in more than 180 formats from one to another with 6 times faster speed and without quality loss. To put it in detail, this file converter supports a variety of video files input including MP4, AVI, MOV, MKV, MTS, FLV, etc., and at the same time the program is able to convert various audio files like MP3, AAC, FLAC, AC3, etc. Leawo Video Converter is able to output file in various formats, such as Common Video (MP4, H.265 MP4, MKV, H.265 MKV, MOV, etc.), Common Audio (AAC, AC3, WAV, MP3, WMA, FLAC, etc.), HD Video (HD MP4, HD AVI, HD TS, HD VOB, etc.), and 4K Video (4K MP4 and 4K MKV). Therefore, we can use Leawo Video Converter as RMVB video converter to convert RMVB video to any video format you prefer, say, RMVB to MKV.

Click the link below to download and install Leawo Video Converter. If you are using Mac version, you can download and install Mac counterpart of Leawo Video Converter. Check out step-by-step guide below to convert RMVB video to MKV with the best free RMVB to MKV converter.

Step 1: Import Source RMVB Video File

Launch Leawo Video Converter, go to the “Convert” tab, and click “Add Video” button on the sub-menu to load your source RMVB video file. Alternatively, you can directly drag and drop RMVB video file into the program interface. After RMVB video file is imported, you could play back RMVB video file, select subtitles and audio tracks from source RMVB video file, add external subtitles to loaded RMVB video file, edit loaded RMVB video file, etc.

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Step 2: Set MKV as Output Format

Click the drop-down box named “MP4 Video” by default next to the “Add Photo” button. On the drop-down list, select “Change” option.

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Then on the popup Profile window, select “MKV” from “Format” column as output format. Please note that once you change the output format, the name of the drop-down box will change as well.

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Note: If you need, you could click the “Edit” button on the drop-down profile setting box to adjust video and audio parameters like video codec, aspect ratio, frame rate, resolution, audio codec, bit rate, channel, sample rate, etc.

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Step 3: Convert RMVB to MKV

Click the big green “Convert” button on the sub-menu bar next to the format setting drop-down box. Then, on the popup sidebar, set output directory. After setting output directory, click the “Convert” button right below. Leawo Video Converter would start to convert RMVB to MKV immediately.

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Note: Leawo Video Converter is equipped with an internal video editor, which allows users to trim video length, add video watermark, crop video size, adjust video effect, turn 2D video into 3D video, and remove video background noise.

Part 2: Convert RMVB to MKV with Totally Free Converter

The second method to convert RMVB to MKV is to use Totally Free Converter, which supports a wide range of video and audio formats. It can convert RMVB to MKV. Check out the detailed steps.

Step 1. Add Source RMVB Video
On the interface of Totally Free Converter, click “Video & Audio” to choose and add source RMVB video.

Step 2. Choose Output Video Format
Once source RMVB video is imported, you will be prompted with a small window panel, where you can choose output video format, rename output video name, and choose output folder. To convert to MKV, you can choose MKV as the output video format.

Step 3. Start to Convert RMVB to MKV
After you set the output video format, name and folder, click “Save” to start to convert RMVB to MKV. After a while, the converted result will be saved in the folder you just set.

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Note: Leawo Video Converter is equipped with an internal video editor, which means you can edit video after you import source video files.

Part 3: Convert RMVB to MKV with Convertio

Besides converter program, you can try online RMVB to MKV converter to convert RMVB to MKV online. Here you can try Convertio. But this online video converter supports 100MB maximum file size. If your source RMVB file is larger than 100MB size, you need to switch to other ways to convert it to MKV. Check out the steps below to convert RMVB to MKV free with Convertio.

Step 1. Upload Source RMVB Video
Go to the official website of Convertio, and then select or directly drag and drop target RMVB file into the converter. It is possible for you to upload video file from your Google Drive or Dropbox account.

Step 2. Choose MKV as Output Format
After your source RMVB video files are uploaded, choose MKV as the output video format. If necessary, you can adjust video parameters such as resolution, quality, aspect ratio and others by clicking the gear icon.

Step 3. Start to Convert and Get Converted Results
Click “Convert” to begin conversion process. Once your video is converted and edited, you can download it to your Mac, PC or another device. If necessary, save the file to your Dropbox or Google Drive account.

Part 4: Convert RMVB to MKV with FreeConvert

FreeConvert.com is a free online file conversion tool to convert your files (image, video, document, and music) from one format to another. Select the target format you want to convert your files to. This site is free, fast, and secure. Plus, there’s no software to install. Choose a target format, and then it will take you to the file upload page. Your files are instantly converted once you upload them to our servers. This online video converter can convert video files into other formats. This can be useful if your favorite video player or video device only support certain file formats. It can also convert audio from video. Simple upload your video files and the converter will it to other video formats. Here we show you how to convert RMVB to MKV with FreeConvert.

Step 1. Choose MKV Output Format
On the main interface of FreeConvert, go to Video Converter and then choose MKV under Convert to section.

Step 2. Import Source RMVB File
On the main interface of file uploading page, you need to import your source RMVB file. On one hand, you can upload it online if you have the URL of source RMVB file. On the other hand, if you file is located on your computer, you can click “Choose Files” or directly drag and drop file on the loading page.

Step 3. Start to Convert RMVB to MKV
After source RMVB file is imported, click on the blue "Convert to MKV" button to start conversion.

Step 4. Download Converted File in MKV Format
Once the files are converted (green bar) you can download the converted files in MKV format individually or click “Download All” button to download all files in a ZIP archive format.

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Part 5: Convert RMVB to MKV with OnlineConvert

Online-Convert is a free online file converter that lets you convert media easy and fast from one format to another. This online video converter supports a lot of different source formats. Check out the guide below to convert RMVB to MKV with Online-Convert.

Step 1. Choose Output Format
Go to the official website of Online-Convert, and go to Video converter tab. To convert to MKV, you can choose “Convert to MKV” under the drop-down list, and then click “Go”.

Step 2. Import Source RMVB File
Click “Choose Files” to choose and add RMVB file. After RMVB file is imported, you can perform optional settings as well.

Step 3. Start to Convert RMVB to MKV
Click “Start Conversion” to start convert RMVB to MKV. After a while, you can get converted video files in MKV format.

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