WMVMP4
FREE VIDEO CONVERTERConvert WMV to MP4 Online Free
Convert WMV videos to MP4 so Windows Media video plays on Mac, iPhone, and the web. Runs entirely in your browser with FFmpeg.
Drop your WMV video here
Multiple files supported
H.264 High ProfileAAC 192k / 48kHzyuv420pWeb fast-startCRF 18 (near-lossless)
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Features
Why use our WMV to MP4 Converter?
Fast Lossless Remux First
Most WMV files already contain a codec that MP4 understands. For those, the streams are repackaged into a MP4 container in seconds with zero quality loss.
Automatic Re-encode Fallback
If a file cannot be remuxed directly, it is automatically re-encoded instead, so the conversion still finishes.
Batch Convert Multiple Files
Drop in as many WMV files as you need and convert them one after another, downloading each finished MP4 individually.
Progress You Can See
Every file shows a live progress bar while it converts, plus before and after sizes when it is done.
100% Private
Your files never leave your device. Every conversion runs locally in your browser, so nothing is uploaded, stored, or seen by anyone.
No Sign-up Required
Open the page and start converting. No account, no email, no install, no watermark.
FAQ
Frequently asked questions
Is my video uploaded to a server?
No. The conversion runs entirely in your browser using a WebAssembly build of FFmpeg. Your video never leaves your device.
Why does the first conversion take a moment to start?
The FFmpeg engine (about 31 MB) is downloaded and set up the first time you use any video or audio converter on the site. After that it is cached and conversions start right away.
Will converting reduce my video's quality?
Usually not. Most WMV files are remuxed, which repackages the existing streams into MP4 with no re-encoding. Only files that cannot be remuxed are re-encoded, at a near-lossless setting.
How long does conversion take?
A remux takes a few seconds regardless of length. A full re-encode is slower because it runs without hardware acceleration in the browser, so a long video can take several minutes.
Why convert WMV to MP4?
MP4 is supported by essentially every device, video editor, and platform, while WMV support is more limited. Converting fixes playback and upload problems.
Is there a file size limit?
There is no hard limit, but very large videos use a lot of memory and can be slow or unstable in some browsers. Files over about 600 MB show a warning.
Is this converter free?
Yes. It is free to use with no sign-up, no account, and no watermark on your files.
All converters
Every converter, in one place.
63 converters. All run in your browser: no sign-up, no uploads, nothing stored.
Image Converters (17)
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Video Converters (18)
View allMOV to MP4 ConverterConvert MOV videos to MP4. Uses a fast lossless remux when possible, falls back to H.264/AAC re-encoding, and can compress the file while it is at it.MKV to MP4 ConverterConvert MKV videos to MP4 for playback on phones, TVs, and editors that cannot open MKV. Runs entirely in your browser with FFmpeg.AVI to MP4 ConverterConvert AVI videos to MP4 for modern playback compatibility on any device. Runs entirely in your browser with FFmpeg.WebM to MP4 ConverterConvert WebM videos to MP4 with H.264 and AAC for the widest compatibility. Runs entirely in your browser with FFmpeg.FLV to MP4 ConverterConvert FLV videos to MP4 so old Flash video plays on any modern device. Runs entirely in your browser with FFmpeg.M4V to MP4 ConverterConvert M4V videos to MP4 so iTunes video plays outside the Apple ecosystem. Runs entirely in your browser with FFmpeg.3GP to MP4 ConverterConvert 3GP videos to MP4 to bring old phone recordings up to a modern format. Runs entirely in your browser with FFmpeg.MPG to MP4 ConverterConvert MPG videos to MP4 so MPEG-1 and MPEG-2 video plays anywhere. Runs entirely in your browser with FFmpeg.TS to MP4 ConverterConvert TS videos to MP4 so broadcast transport streams play in any player. Runs entirely in your browser with FFmpeg.GIF to MP4 ConverterConvert GIF videos to MP4 to get a tiny video file that autoplays on social media. Runs entirely in your browser with FFmpeg.MP4 to WebM ConverterConvert MP4 videos to WebM using VP9 video and Opus audio for smaller files that play natively in every modern browser. Runs entirely in your browser with FFmpeg.MOV to WebM ConverterConvert MOV videos to WebM using VP9 video and Opus audio for the open web. Runs entirely in your browser with FFmpeg.MP4 to MOV ConverterConvert MP4 videos to MOV for QuickTime, Final Cut Pro, and iMovie. Runs entirely in your browser with FFmpeg.MP4 to MKV ConverterConvert MP4 videos to MKV to wrap the video in a Matroska container without re-encoding. Runs entirely in your browser with FFmpeg.MP4 to AVI ConverterConvert MP4 videos to AVI for legacy players and older editing software. Runs entirely in your browser with FFmpeg.MP4 to GIF ConverterTurn an MP4 video clip into an animated GIF with adjustable frame rate and size. Runs entirely in your browser.MOV to GIF ConverterTurn a MOV video clip into an animated GIF with adjustable frame rate and size. Runs entirely in your browser.WebM to GIF ConverterTurn a WebM video clip into an animated GIF with adjustable frame rate and size. Runs entirely in your browser.
Audio Converters (19)
View allVideo to MP3 ConverterExtract the audio from any video and save it as an MP3. Works with MP4, MOV, MKV, WebM and AVI, entirely in your browser.MP4 to MP3 ConverterExtract the audio track from an MP4 video and save it as a high quality MP3, entirely in your browser.MOV to MP3 ConverterExtract the audio track from a MOV video and save it as a high quality MP3, entirely in your browser.Audio ConverterConvert audio between MP3, WAV, OGG, M4A, and FLAC. Batch convert many files at once, entirely in your browser.OGG to MP3 ConverterConvert OGG audio to MP3 for playback on any device or player. Batch convert many files at once, entirely in your browser.WAV to MP3 ConverterConvert WAV audio to MP3 to shrink huge uncompressed recordings to a fraction of the size. Batch convert many files at once, entirely in your browser.M4A to MP3 ConverterConvert M4A audio to MP3 so Apple voice memos and iTunes tracks play anywhere. Batch convert many files at once, entirely in your browser.FLAC to MP3 ConverterConvert FLAC audio to MP3 to get compact files that play on every device. Batch convert many files at once, entirely in your browser.AAC to MP3 ConverterConvert AAC audio to MP3 for universal playback compatibility. Batch convert many files at once, entirely in your browser.WMA to MP3 ConverterConvert WMA audio to MP3 so Windows Media audio plays on Mac, iPhone, and Android. Batch convert many files at once, entirely in your browser.OPUS to MP3 ConverterConvert OPUS audio to MP3 so voice messages and web audio play in any player. Batch convert many files at once, entirely in your browser.AIFF to MP3 ConverterConvert AIFF audio to MP3 to compress Mac audio files for sharing. Batch convert many files at once, entirely in your browser.MP3 to WAV ConverterConvert MP3 audio to WAV for editing in any DAW or audio editor. Batch convert many files at once, entirely in your browser.MP3 to OGG ConverterConvert MP3 audio to OGG for open-format web and game audio. Batch convert many files at once, entirely in your browser.MP3 to M4A ConverterConvert MP3 audio to M4A for iPhone, iPad, and Apple Music. Batch convert many files at once, entirely in your browser.MP3 to FLAC ConverterConvert MP3 audio to FLAC to archive in a lossless container. Batch convert many files at once, entirely in your browser.WAV to FLAC ConverterConvert WAV audio to FLAC to halve the size of your masters without losing a bit. Batch convert many files at once, entirely in your browser.M4A to WAV ConverterConvert M4A audio to WAV for uncompressed editing. Batch convert many files at once, entirely in your browser.OGG to WAV ConverterConvert OGG audio to WAV for uncompressed editing. Batch convert many files at once, entirely in your browser.
PDF Converters (5)
View allPDF to JPG ConverterConvert every page of a PDF into a high quality JPG image and download them all as a ZIP. Free, private, instant.PDF to PNG ConverterConvert every page of a PDF into a lossless PNG image and download them all as a ZIP. Free, private, instant.JPG to PDF ConverterCombine JPG and JPEG photos into a single PDF. Add many at once, reorder them, pick a page size, and download one document.PNG to PDF ConverterCombine PNG images into a single PDF. Add many at once, reorder them, pick a page size, and download one document.WebP to PDF ConverterCombine WebP images into a single PDF. Add many at once, reorder them, pick a page size, and download one document.
CAD Converters (3)
View allJPG to DXF ConverterTurn JPG, PNG and WebP images into editable DXF vector drawings for AutoCAD, laser cutters and CNC machines. Trace a whole batch at once in your browser.PNG to DXF ConverterTurn PNG images and logos into editable DXF vector drawings for AutoCAD, laser cutters and CNC machines. Trace a whole batch at once in your browser.PDF to DXF ConverterTurn PDF drawings into editable DXF files for AutoCAD, CNC and laser cutting. Real vector geometry is pulled straight out of the page, and scanned drawings can be traced instead.