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How to Convert WMV to MP4 Mac, Windows, Online | 98% Quality Kept

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, a more compatible format for all devices and platforms. You can convert WMV to MP4 online using online video converter if you don’t mind their limited file size and resolution, possible privacy leak and slow processing speed. Alternatively, desktop conversion software is highly recommended.

On this page, you can learn how to convert WMV file to MP4 on Mac/Windows 10 with WinX, plus WMV vs MP4 comparison and frequently asked questions about WMV to MP4 conversion.

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

To convert video from WMV to MP4, online services are placed at the top of your priority list. Yet, majority of online WMV to MP4 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.

So, desktop software WinX is the best choice to WMV to MP4 conversion without size limits, and with 98% quality reserved.

Convert WMV to MP4
Convert WMV to MP4

Step 1. Download the WMV to MP4 converter

Click the download button to download the video converter, install and run it on your Mac or Windows 10.

Step 2. Add WMV file

Simply click + Video button to load WMV files. Bulk conversion is also accessible, so don’t worry about your input video size. It works fine with any file size.

Step 3. Select MP4 as output format

When the Output Profile window pops up, click PC General Video and select MP4 Video as the output format and click OK. Please remember to select a destination folder on computer to save the converted file by clicking the Browse button on the main UI of this converter.

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 High Quality Engine and Deinterlacing. Hardware Accelerator will be auto activated if this software detects your computer supports GPU hardware acceleration, as well. GPU HW acceleration will offload WMV to MP4 conversion task from CPU to GPU for faster processing and relieve CPU burden to avoid software freezing or CPU overuse errors.

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. Start Converting WMV to MP4

After finishing the above settings, check the files needed to convert in the file list, and click RUN button on the main interface to start WMV to MP4 conversion with virtually no quality degradation. When the conversion finishes, the folder with your new file will open automatically.

Best Free WMV Video Converter: No Size Limits and 98% Quality Reserved!

WinX is powerful video converter freeware to convert 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:

  • It allows you to load WMV files without file size limits, be it 500MB, 1GB, 10GB, 20GB....and convert WMV to MP4 in batch.
  • Professional development team constantly upgrades conversion algorithm and optimizes High Quality Engine & De-interlacing to ensure the highest possible resulting quality, 98% quality kept!
  • Pre-set 420+ device profiles enables you to directly convert WMV to iPhone iPad, Android (Huawei, Samsung, Sony, HTC...), Google Pixel, Microsoft device, Xbox, PS4/5, etc.

Part 2. WMV vs MP4: Which One is Better?

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. 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 3. FAQs about WMV to MP4 Conversion

1. How to convert WMV to MP4 on Mac?

As iMovie and QuickTime can’t convert WMV to MP4 on Mac directly, you need a third-party WMV to MP4 converter for Mac. Mac App Store recommends you AnyMP4 Studio’s Free MP4 Converter to help do the job. It is a good versatile video converter for people to convert any video format to and from MP4 for playback on iPhone, iPad, iPod, Android, and TV.

  • Step 1. Download Free MP4 Converter, install and launch it on your Mac.
  • Step 2. Click the Add File button to add your WMV file.
  • Step 3. Choose MP4 as the output format and select a destination folder to save the converted file.
  • Step 4. Hit Convert button to start converting WMV to MP4 on Mac with this software.

2. 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 file converter. Here, the video converter is proved to be the best choice for Windows 10 users to convert videos between formats, such as WMV to MP4.

  • Step 1. Free download the wmv to mp4 video converter, install and launch it on Windows 10.
  • Step 2. Click the + Video button to add a WMV file.
  • Step 3. Choose MP4 as the output format from the Output Profile window.
  • Step 4. Choose a destination folder and then hit RUN button to start WMV file to MP4 conversion on Windows 10.

3. How to convert WMV to MP4 free online?

Online video converters are good options if you don’t want any installation. Only three steps, you can convert WMV to MP4 free on any operating systems. Here, CloudConvert is taken as an example.

  • 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.

4. Can VLC convert WMV file to MP4?

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

  • 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.

5. Which one is the best WMV to MP4 converter?

WinX 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. If you need more, there is a list of top best WMV to MP4 video converters.

  • CloudConvert
  • FreeConvert
  • Convertio
  • Zamzar
  • WinX
  • Wondershare Uniconverter
  • VLC
  • ConvertFiles
  • Online Converter
  • HandBrake
  • ...

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

Someone is asking on Google 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 you. Needless to look somewhere else, WinX is the best answer!


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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