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Free Convert WMV to MP4 Windows, Mac, Online

Developed by Microsoft, WMV file format works fine on both Windows and Mac with the help of Windows Media Player. For other operating systems like iOS and Android, it is better to convert WMV to MP4 format to be compatible with all devices and platforms. You can convert WMV to MP4 online using an online video converter if you don’t mind their limited file size and resolution, possible privacy leak and slow processing speed. In another word, desktop WMV to MP4 converter is more recommended.

Whatever, we will list different types of ways to help convert WMV file to MP4 format that you can choose your desired way freely.

Part 1. How to Convert WMV to MP4 on Mac/Windows 10?

No matter you use Windows 10 or Mac computer, WinX HD Video Converter Deluxe is the best desktop WMV to MP4 conversion choice to convert your videos in highest quality, fast and without size limits. It is a 4K video converter and compressor that can convert WMV files up to 4K and help reduce file size if your videos are too large.

Also, during changing format from WMV to MP4, you can also change the codecs inside the video, and adjust bit rate, frame rate, aspect ratio, and so on. If needed, it allows you to trim, cut, crop a video and add subtitles.

How to convert WMV to MP4 with WinX HD Video Converter Deluxe?

Step 1. Get the WMV to MP4 converter.

Click the download button below to free download WinX HD Video Converter Deluxe for Windows or Mac, install and run it on your computer.

Step 2. Add a WMV file.

On the main UI, click the + Video button to add a WMV video. Bulk conversion is also accepted, so you can add more WMV files. Don’t worry about the input file size, it works fine.

Convert WMV to MP4
Convert WMV to MP4

Step 3. Select MP4 as the output format.

After adding the WMV file, there is a popup Output Profile window. Simply navigate to General Profiles and choose MP4 Video as the output format, and then click OK.

Step 4. Enable High Quality Engine.

To ensure the minimal quality damage, move your mouse to the lower right corner of the home screen of this software, where manually tick Use High Quality Engine and Deinterlacing. Hardware Accelerator will be auto activated if this software detects your computer supports GPU hardware acceleration to help speed up WMV to MP4 conversion while relieve CPU burden to avoid software freezing or CPU overuse.

Enable High Quality Engine
Enable High Quality Engine

The Merge feature can be utilized to merge WMV video clips into one video. And the Auto Copy feature can realize the truly 1:1 lossless video conversion if your input and output video codecs are the same, such as MKV H264 to MP4 H264, MOV HEVC to MP4 HEVC.

Step 5. Select a destination folder to save the MP4 file.

By clicking the Browse button, you can choose a folder to save the converted MP4 file.

Step 6. Start converting WMV to MP4.

Now, hit the RUN button at the bottom right corner to start WMV to MP4 conversion with virtually no quality degradation. When the conversion finishes, the folder with your new file will open up automatically.

Why Choose WinX HD Video Converter Deluxe? More Than A WMV to MP4 Converter

WinX HD Video Converter Deluxe is a powerful 4K video converter capable of converting virtually all video formats. The input and output formats are a page long, covering from WMV, FLV, WebM, 3GP to MP4, H264, H265, MOV, MKV, M4V, SWF, AVCHD, VOB, MP3, AC3, etc. To be specific:

  • Convert WMV to MP4 up to 4K one by one, or in batch smoothly.
  • Load WMV files without file size limits, be it 500MB, 1GB, 10GB, or 20GB. No size limits.
  • Pre-set 420+ device profiles to let convert WMV to iPhone, iPad, Android, Google Pixel, Microsoft device, Xbox, PS4/5, etc.
  • High Quality Engine & De-interlacing ensure 98% quality reserved.
  • Hardware acceleration gives 47x faster conversion speed.
  • Constant conversion algorithm upgrading. Free tech support.

Part 2. How to Convert WMV to MP4 Online?

Online WMV to MP4 converter is also a good choice to this end. Without any installation, you can simply upload the WMV files to it, and then convert the video to the file format you need. However, you have to remember that online tools often have file size limits and slow processing speed if you don’t upgrade the subscription plan. Also, 4K videos may not be supported and privacy leak is possible.

In the market, there are diverse online WMV to MP4 converters for you to choose from. If needed, they also let you change the video parameters like resolution, aspect ratio, CRF, video/audio codec, frame rate, bit rate, audio volume, etc. Some of them can allow you to trim video into small clips, add subtitles, and add watermarks. BTW, converting other format videos like MOV to MP4 is also permitted.

1. Convert WMV to MP4 Online with CloudConvert

Step 1. Go to CloudConvert WMV to MP4 webpage.

Step 2. Click on the Select File button to add a WMV file from your computer. You can also add a video from Google Drive, Dropbox, OneDrive and by URL.

Step 3. Now, click Convert button, and CloudConvert will start uploading and converting your video. BTW, you can also add multiple WMV videos for batch conversion.

Step 4. After finishing the conversion, simply click the Download button to download the MP4 video.

CloudConvert WMV to MP4

2. Convert WMV to MP4 Online with FreeConvert

Step 1. Go to FreeConvert website https://www.freeconvert.com/wmv-to-mp4.

Step 2. Click on Choose Files button to upload a WMV video from computer, Dropbox, Google Drive and URL. Please note that you can only drop file with maximum file size 1GB if you want to use it for free.

Step 3. Select MP4 format from the drop down menu of Output option.

Step 4. Now hit the Convert to MP4 button to start converting WMV to MP4.

Step 5. Once done, just download the MP4 file.

FreeConvert WMV to MP4

3. Convert WMV to MP4 Online with Adobe

Step 1. Go to Adobe Express WMV to MP4 page and click the Upload your video button.

Step 2. Click the Sign up button to log in with your account.

Step 3. Upload your WMV file.

Step 4. Click the Export button to turn your WMV video to MP4.

BTW, there are also online video converters including veed.io, convertio, zamzar, onlineconverter, online-convert, and convertfiles for you to choose from.

Adobe WMV to MP4

Part 3. Free Convert WMV to MP4 with VLC

One of the hidden features of VLC media player is its video converting. You can use it to convert video files to MP4 and some other formats, like WebM, TS, OGG and ASF. It is free that everyone can use it, and convenient to play the MP4 video directly after file conversion.

Step 1. Free download VLC media player, install and launch it on your PC.

Step 2. On the main UI, click Media on the top bar and choose Convert/Save.

Step 3. On the pop-up window, switch to File and click Add button to add your WMV file and then click Convert/Save button in the bottom of this window.

Step 4. In the new window, choose Video – H.264 + MP3 (MP4) or Video – H.265 + MP3 (MP4) from the drop-down menu of Profile option.

Step 5. Finally, hit Start button to start WMV file to MP4 conversion with VLC.

VLC Convert WMV to MP4

Part 4. Convert WMV to MP4 Free with HandBrake

Like VLC, HandBrake is also an open-source software. It is more suggested as it is a tailor-made video transcoder for people to convert videos between formats. You can easily load a WMV video and choose MP4 as the output format from the presets. You can also customize your video’s parameters like frame rate, codecs, subtitles, filters, resolution, aspect ratio, and so on.

Step 1. Free download HandBrake on your Windows 10 or Mac computer, install and launch it.

Step 2. Drag and drop a WMV file to it.

Step 3. Click Summary tab and select MP4 under Format option.

Step 4. Under Save As, just give your file a name.

Step 5. Now, click the Browse button to choose a destination folder to save the converted file.

Step 6. Now, hit the Start Encode button to start converting WMV file to MP4 format.

HandBrake Convert WMV to MP4

Part 5. Free Convert WMV to MP4 with FFmpeg

FFmpeg is a command line method that may skilled people can handle, yet it is very convenient. No matter on Mac, Windows 10 or Linux, you can use this way to convert WMV to MP4 or vice versa, and convert between other formats for free.

Step 1. Go to the FFmpeg site and download the package for your operating system. Here, we take Windows version as an example.

Step 2. After downloading FFmpeg, extract the contents of the archive to a folder on your computer.

Step 3. Locate your WMV video, right-click it and select "Copy".

Step 4. Open the folder where you extracted FFmpeg, and access the "bin" folder. Then, right-click anywhere blank and choose "Paste". Your WMV video file is now available in the "bin" folder.

Step 5. In the same "bin" folder, right-click anywhere blank and choose "Open in Windows Terminal".

Step 6. When Windows Terminal opens, type the command: ffmpeg -i source.wmv target.mp4, and press Enter. In the command, replace source.wmv with the name of your WMV file and target.mp4 with the name you want for your resulting MP4 file.

Step 7. Now, FFmpeg will start converting WMV to MP4. After conversion, you can find the converted MP4 file in the same "bin" folder.

VLC Convert WMV to MP4

Part 6. Information about WMV and MP4 Formats

WMV, also known as Windows Media Video is a video container format developed by Microsoft. Just as its name implies, it is mainly designed for Windows OS, while you can still play WMV on Mac with the help of Windows Media Player or converting WMV to MP4. However, WMV has been an old-fashioned file format that iPhone, Android and other operating systems have problems playing it. That’s why you need convert it to a more compatible format like MP4.

MP4 (MPEG-4 Part 14) is also a container format which contains more popular codecs like H.264 and H.265 which are adopted by most modern devices. That being said, MP4 is a more universal video format that can be played on almost all desktop and portable devices, upload to any cloud services and share on any video hosting sites. Besides, high compression ratio and low quality loss are also factors people consider when converting WMV to MP4.

Container format



Developed by


Moving Picture Experts Group (MPEG)

File extension



Video codecs

WMV V7, WMV V8, WMV 9, WMV 9 Screen, WMV 9 Advanced profile, MPEG-4, WMV 9.1 Image V2

H.264, H.265, MPEG-2, MPEG-4, H.263, VC-1, Dirac, others

Audio codecs

WMA 9, WMA Pro, WMA Voice

AAC, MP3, AC-3, Apple Lossless, ALS, SLS, others


Blu-ray disc players and recorders, DVD players and recorders. Windows PC, macOS, and Linux (with the help of Windows Media Player, or other media player supporting the WMV format)

Compatible with almost all devices and operating systems

File size

Even smaller than MP4 under same video quality


Part 7. Frequently Asked Questions

1. Which is better, WMV or MP4?

WMV is developed by Microsoft for Windows media video files. So if you want to play your video files on your Windows PC, you can choose WMV format. However, WMV is not natively supported by many operating systems and devices, leading people to turn to MP4 format. MP4 file format is supported by nearly all devices and media players out the market. And the MP4 files are smaller than WMV, as well.

2. Why is my WMV file not playing?

WMV file not playing error often occurs on Mac computer as Mac doesn’t support it natively. As a consequence, iMovie, Final Cut Pro, and QuickTime Player can’t recognize WMV files. Besides, you can’t even play WMV videos on iPhone, PSP, Xbox, etc. To solve the error, converting WMV to MP4 is a good way.

3. How do I open a WMV file on Mac?

As WMV file is not playable in QuickTime Player natively on Mac, you need to download a third-party WMV player for Mac like VLC media player and 5KPlayer to enable the playback without errors. Alternatively, you can convert WMV to Mac-supported formats like MP4 and MOV first, and then play with QuickTime Player.

4. How do I convert WMV to MP4 for free?

To free convert WMV file to MP4 format without a penny, you can make use of open-source video transcoder – HandBrake. It is free software for converting video from nearly any format to a selection of modern, widely supported codecs for any devices.

Step 1. Free download HandBrake from its official website, and install it on computer.

Step 2. Open HandBrake. If you are shown "install .NET Desktop Runtime" message, simply click "Yes" to download the application to make HandBrake work properly on your PC.

Step 3. Now, on the main UI click the File option to add a single WMV video file to it.

Step 4. In the Summary tab, choose MP4 from the drop down menu of Format option. As the options imply, you can also set dimensions, filters, video/audio codec, subtitles, etc. for your video. Also, there is a list of Presets for you to choose to match with your device or platform perfectly.

Step 5. Choose a destination folder to save your converted file by clicking the "Browse" button.

Step 6. Hit the Start Encode button to start converting WMV to MP4.

5. How to convert WMV to MP4 on Mac?

As Mac software iMovie and QuickTime can’t convert WMV to MP4 on Mac directly, you need a third-party WMV to MP4 converter to that end. MacX Video Converter Pro is a video converter for Mac with Hardware Acceleration support to offer 5x faster speed for any file conversion with highest quality. It’s never easier to convert WMV file to MP4 and 420+ formats for iPhone, iPad, iPod, Android, TV, Xbox One, etc.

Step 1. Download MacX Video Converter Pro on your Mac, install and launch it.

Step 2. On the main UI, click the +Video button on the top bar menu to add your WMV video. BTW, batch conversion is also supported that you can add more than one file to this video converter.

Step 3. When the Output Profile window pops up, choose MP4 Video as the output. Then, click Done.

Step 4. At the bottom, click Browse button to choose a destination folder to save the converted file.

Step 5. Last, hit the RUN button to start WMV to MP4 conversion in MacX Video Converter Pro.

6. How to convert WMV to MP4 on Windows 10?

Windows Media Player can’t convert WMV to MP4, so you need a Windows-based WMV to MP4 video converter. Here, the WinX HD Video Converter Deluxe is proved to be the best choice for Windows 10 users to convert videos between formats for any purpose. Also, this video converter is available for Windows 11 users.

Step 1. Go to WinX HD Video Converter Deluxe website, download, install and launch it on Windows 10 PC.

Step 2. Add a WMV video by clicking the +Video button.

Step 3. Choose MP4 Video as the output format when the Output Profile window pops up. Then, click OK to continue.

Step 4. Choose a destination folder to save the output MP4 video by clicking on the Browse button.

Step 5. When everything is done, hit the run button to start the process on Windows 10 PC.

7. How to convert WMV to MP4 online?

Online video converters are good options if you don’t want any installation. Take CloudConvert online WMV to MP4 converter as an example, it is a web-based service to let people upload videos and convert to various formats for various purposes. Like the offline tools, it also features customizable settings to allow for changing video resolution, adjusting aspect ratio, adding subtitles, and so on. The WMV to MP4 conversion process is also very simple.

Step 1. Visit CloudConvert WMV to MP4 page: https://cloudconvert.com/wmv-to-mp4, and click on Select File to choose a WMV file to upload. You can select the file from computer, Google Drive, Dropbox, OneDrive, or by URL.

Step 2. After that, simply choose MP4 next to Convert to option.

Step 3. Hit red Convert button to start conversion.

Step 4. After conversion, download the MP4 file.

BTW, top online WMV to MP4 converters include CloudConvert, Freeconvert, Convertio, Adobe Express, Veed.io, Onlineconverter, Zamzar, Online-convert, ConvertFiles, Aconvert.com, Video2Edit, etc.

However, majority of online video converters put limits on video file size that 100MB or 200MB is the maximum size. If your WMV footage is over 500MB, this is not a good way out. Besides, online tools require fast internet speed and often don’t assure the privacy safety of your private videos.

8. Can VLC convert WMV file to MP4?

Yes. Not only a media player, VLC also acts as a WMV to MP4 video converter to let people free convert WMV files to MP4 and some other video formats, including WebM, TS, OGG, ASF, etc. for iPhone, Android, TV, or YouTube.

9. What is the best free WMV converter?

WinX HD Video Converter Deluxe is the top option if you need fast speed and high output quality especially when processing 4K videos. Online video converters let people convert WMV to MP4 online on any operating systems without installation. VLC and HandBrake are the two most popular open-source tools that millions of people would like to choose. Also, there are some other options.

  1. CloudConvert
  2. FreeConvert
  3. Adobe Express
  4. Convertio
  5. Veed.io
  6. Zamzar
  7. Movavi Video Converter
  8. OnlineConverter
  9. Wondershare Uniconverter
  10. WinX HD Video Converter Deluxe

10. Is there quality loss when converting WMV to MP4?

Someone is asking if there is one tool to decode WMV to MP4 without losing quality. The answer is NO. WMV video is encoded by WMV2 codec while MP4 is encoded by MPEG-4, H264 or H265 codec. When it comes to transcode WMV to MP4, the decoding and re-encoding processes are inevitable. Consequently, the resulting MP4 file is supposed to be lossy in quality. This doesn't mean there is nothing you can do to improve output file quality. Instead, you need to single out the best WMV to MP4 video converter program with highest possible quality for the file conversion.


author - Kistent Waung

Kistent Waung twitter icon

Graduated from Nanyang Technological University, Singapore, she employs herself in IT related content creation (since 2013) and happens to perfectly combine her major (computer & science) and her gusto (writing). She's seasoned at offering video audio conversion workarounds and always passionate about new trends, from hot HEVC, 4K to the new AV1 codec.

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