WMA to MP4 Converter

Wrap Windows Media audio in an MP4 video you can post anywhere. Free, in your browser, with no signup and no watermark.

Select WMA file →

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Click or drag and drop to upload files

We support most file types including: MP4, MOV, WEBM, AVI, MP3, WAV, PNG, JPEG, GIF, MKV, PDF, FLAC, TIFF!

EchoWave is used by creators, marketers, educators, and businesses to convert and edit media online.

Updated June 2026

YouTube, Instagram, and TikTok only take video, and none of them will touch a WMA. This converter wraps your Windows Media audio in an MP4 with a clean visual, free and in your browser, so a track or recording that nobody could upload becomes a video you can post anywhere. MP4 also plays on the phones and apps that ignore WMA outright, so it travels far better than the file you started with.

Free, no sign-upNo account, no trial

Runs in your browserNothing to install

Works on every devicePhone, tablet, laptop

No watermarkClean output, every time

How it works

How to convert WMA to MP4

1
Upload your WMA
Drag your WMA onto the converter or pick it from your device. Nothing to install.
2
Choose MP4 and convert
Select MP4 as the output. Your audio is placed into a video with a clean background.
3
Download your MP4
Save the MP4 ready to upload, or open it in the editor to add a cover image first.

Try it

Estimate your MP4

Pick a video bitrate and a length to see the MP4 file size before you convert.

Video bitrate

Length5 min

1 min30 min

Estimated MP4 size183MBSharp 1080p

An estimate. Real size varies with resolution, frame rate, and how much the picture moves.

The formats

WMA vs MP4

WMA

Windows Media Audio

Windows Media audio, a Microsoft format

Type: Lossy audio format
Holds: Windows Media Audio, audio only
Typical size: Small, built for Windows
Plays on: Windows Media Player and VLC

Best for:Older Windows audio libraries

MP4

MPEG-4 Part 14

The video format that plays everywhere

Type: Video container
Holds: H.264 video plus AAC audio, sometimes subtitles
Typical size: Large, it carries video
Plays on: Phones, browsers, TVs, almost any player

Best for:Watching and sharing video

Will it look and sound right?

Your audio is kept at full quality inside your new MP4 video, so nothing is lost from the sound.
The picture is a simple visual because the source is audio only. Add a cover image or waveform in the editor for a richer look.
A longer track makes a larger video, since the file carries a picture for every second.

Use cases

What people use it for

MusiciansPost tracks to video sites

PodcastersPublish episodes on YouTube

TeachersShare a lesson as video

CreatorsMake an audiogram to share

SocialUpload where video is required

Troubleshooting

If something looks off

The video is just a still image

That is expected, since the source is audio only. Open the MP4 in the editor to add a cover image, logo, or animated waveform.

It will not upload to YouTube or Instagram

Most sites want MP4. Convert to MP4 for the widest support, then upload the video file.

The file is large

Video files are bigger than audio because they store a picture for every frame. A shorter track or a plain background keeps the size down.

FAQ

WMA to MP4 questions

Why turn a WMA into an MP4?

Sites like YouTube, Instagram, and TikTok only accept video, and they reject WMA on top of that. Converting WMA to MP4 wraps your audio in a video file those platforms will take, which is the usual reason people make this move.

How do I convert WMA to MP4?

Upload your WMA, choose MP4 as the output, and start. EchoWave places your audio into a video with a clean background, and you can download the MP4 when it finishes or open it in the editor to add a cover image first.

After converting WMA to MP4, will the video just be a still picture?

By default yes, because the source is audio only, so the MP4 shows a simple background while your sound plays. Open the result in the editor to add cover art, a logo, or an animated waveform for something more eye-catching.

Does the audio stay at full quality in the MP4?

Your WMA audio is carried into the MP4 at its existing quality, so nothing extra is lost from the sound itself. The MP4 can only be as good as the WMA you start from, since converting cannot add detail that was not in the original.

Why is the MP4 larger than the WMA?

A video file stores a picture for every frame as well as the audio, so it weighs more than an audio-only WMA. A plain background and a shorter clip keep the size down if file size matters for your upload.

Is the WMA to MP4 converter free?

Yes. EchoWave converts WMA to MP4 with no signup, no file-count limit, no trial, and no watermark. Upload your file, convert it, and download the MP4 from your browser.

Does the WMA to MP4 converter work on iPhone and Android?

Yes. The converter runs in any browser, so it works on iPhone, iPad, Android, macOS, Windows, Chromebook, and Linux with nothing to install. The MP4 it produces then plays on all of those, unlike the WMA you started with.

Can I add my own cover image before posting?

Yes. Open the MP4 in the editor to drop in cover art, a title, a logo, or a waveform animation before you share it, which makes a much better thumbnail on social feeds.