Convert WMV to MP4 Online for Free
Turn a Windows Media Video recording into an MP4 you can watch or share.
Drop your WMV recording here
or choose a local file or import from a URL
Choose a file to get started
How to convert WMV to MP4
1. Open the recording
Select the .wmv file from the archive. If the folder also contains a playlist, open the WMV on its own and check which part of the session it actually contains.
2. Choose the resolution
Use Original when a viewer needs to read slide labels or a software menu. Compare the smallest useful label before making a smaller copy for a phone.
3. Download the result
Select Convert WMV to MP4. Save the result and open it on the device you intend to use. Check the introduction, a slide change and the final spoken words.
Which file should you use to convert WMV to MP4?
Choose the .wmv that contains the recording. An .asx or .wvx can open Windows Media Player and start a video stored elsewhere. To find the underlying media, inspect the playlist entry or open the WMV directly. A .wma may contain the soundtrack alone.
| What you have | How to check it |
|---|---|
| A .wmv that opens with the network disconnected | Seek to a later slide and play a few seconds. This is a candidate for an offline viewing copy. |
| An ASX or WVX that opens a playlist | Check which recording or recordings the entries refer to. Obtain the underlying media from the archive. |
| A .wma containing the instructor’s voice | An audio recording alone cannot supply the slides or screen demonstration. Locate the video export. |
| A recording that requests a playback licence | Use the provider’s supported playback or obtain an authorised, unprotected copy. This converter cannot unlock protected media. |
A playlist can reference several WMV files. To convert WMV to MP4 in full, compare the running time of the selected file with the total shown by the playlist. If advancing to the next item opens another file, convert that recording separately. The converter reads only the selected input.
How to convert WMV to MP4 and keep small text readable
Pick the hardest part of the source to read, not the title slide. A spreadsheet column heading, a menu option or the unit beside a measurement is a better reference. Export at the original dimensions first. View the source and the saved MP4 at the same size and check that the reference stays legible. An early screen capture might be small enough that shrinking it again sacrifices the precise detail the class needs.
The converter targets H.264 video and AAC sound for a playable MP4. Switching from Windows Media encoding can require encoding the image and sound again. Original resolution refers to the dimensions; it does not mean every compressed frame or every audio track is copied unchanged. Keep the original file if you might need a different edit later. Do not treat the smaller screen on a phone as proof that two versions will look identical on a projector.
A screen recording can hold the same picture while its audio continues. Compare the timestamp of the next visible change in the standalone WMV and the downloaded MP4. If both show the same still frame for the same interval, the pause is part of the source. If only the MP4 stalls, try the saved file in a second player.
Will my WMV to MP4 download play offline?
Open the downloaded MP4 from local storage. Try starting playback near the end as well as at the beginning. If the source played only through an old playlist, this check establishes whether the MP4 contains the complete recording and whether the destination player can decode both tracks.
A chapter menu, external captions and slides stored beside the WMV are separate assets. To check what is inside the MP4, open it in a folder without those companion files. If a caption disappears, locate the original subtitle file before moving or sharing the video.
Frequently asked questions about WMV to MP4 conversion
Can I convert WMV to MP4 free without signing up?
Yes. Select the local WMV, choose the resolution and download the MP4 from your browser. Save the result before closing the tab and check it in the application your audience will use.
Can I open an ASX or WVX playlist here?
Use the media file referenced by the playlist. For WMV to MP4 conversion, you need a readable WMV stored on your device or a direct link to it. A playlist can continue to exist after its media has moved.
Can a WMV with a black preview still convert?
First check that the recording shows moving pictures or an actual slide change in a player that reads Windows Media. A browser preview and a converter may support different codecs. Try the export using the complete local file.
Will the downloaded MP4 include the voice track?
WMV to MP4 conversion targets AAC for readable audio. Listen to a known passage in the standalone WMV. If the voice is audible only when presentation software loads another file, include that voice in the source export first.
Can the converter open a recording that asks for a licence?
The converter needs readable media and does not remove Windows Media rights protection. Use the authorised playback method or ask the provider for a downloadable, unprotected recording that you can convert.
Is changing the filename extension enough?
No. Changing the name leaves the media data in its Windows Media structure. A tolerant player may still recognise it, but an application requiring MP4 can reject it. Export the video and test that file instead.
How do I keep the original frame size?
Choose Original in the WMV to MP4 converter. Compare the width and height in the saved file’s media information. A player can enlarge a smaller file to fill the screen, so playback window size is not a reliable measure.
What kind of download link can I import?
The URL must be HTTPS and lead directly to the media, with the host allowing your browser to read it. An old streaming playlist or a page behind a sign-in is different. Download the media first if available.
Why does playback stop at the end of the first playlist entry?
Open the original WMV by itself and check where it ends. Check whether the Q&A entry points to a separate recording or a later position in the same WMV. Obtain the second source if the files differ. Exporting the first file cannot bring in an unselected recording.
Does the MP4 include the original chapter menu?
A playlist or presentation menu can jump to a timestamp or start a different media file. Converting a single WMV does not rebuild those menu entries. Keep the playlist if you still need that navigation.
How can I make a smaller attachment?
Check the size of the completed WMV to MP4 download. A lower resolution can reduce it, but the height setting has no fixed relationship to megabytes. For a specific upload limit, use the video compressor on a copy.
Which files should I keep after conversion?
Keep the source WMV and any separate captions or playlist files you still use. The MP4 is a viewing copy. Saving it in another folder lets you test whether it plays independently before moving the original files.