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Convert WMV to MP4 on Windows: 3 Methods

Convert WMV to MP4 on Windows with GetCompress, Clipchamp, or FFmpeg. Re-encode to H.264 for uploads, editing, and sharing.

By Petr Samokhin

WMV files still live in enterprise training libraries, old screen recordings, and camcorder archives. Modern upload forms, phones, and web players expect MP4 with H.264 instead.

Convert locally, keep the archive master, and trim or resize when SharePoint or a client portal also caps megabytes.

WMV vs MP4

WMV grew out of the Windows Media stack. MP4 with H.264 and AAC is the default container combination for web uploads, mobile devices, and most editors today.

WMVMP4
Common sourceWindows Media exports, old camcorders, HR training archivesWeb, phones, modern editors
Built-in Windows appsPlays in some legacy appsWidely accepted
Upload formsIncreasingly rejectedUsually accepted
Best first stepRe-encode to H.264 MP4Already compatible

If the clip plays but the extension blocks upload, export is enough. If the portal also caps megabytes, trim first. See how to compress video on Windows when size is the real blocker.

Method 1: GetCompress

Best for: One file or archive folders with recurring legacy exports, and portals with a hard megabyte cap.

GetCompress main window with videos queued and video settings open, including quality, target size, resolution, and format options
  1. Open GetCompress and drop WMV files or a folder into the queue.
  2. Trim start and end in the preview if the recording has idle time.
  3. Choose MP4 output, set resolution and quality, or set an exact video target file size when the form states a megabyte limit.
  4. Export the delivery copy. Keep the WMV master.

Processing stays on your PC. Save a preset such as “1080p client review” or “720p ticket video” for the next migration batch.

Method 2: Export in Clipchamp

Best for: One or two clips on Windows 11 when you do not need a batch queue.

  1. Open the WMV in Clipchamp.
  2. Trim the timeline to remove dead air.
  3. Export at 1080p or 720p.
SituationExport choice
One clip for a ticket720p after trim
Client review in OneDrive1080p
Portal with a hard MB capTrim first, then compress further

Limitation: No strong batch workflow and no exact megabyte target.

Method 3: Convert with FFmpeg

Best for: Archive migrations and exact encoder flags in PowerShell.

winget install --id Gyan.FFmpeg -e
ffmpeg -i input.wmv -c:v libx264 -crf 22 -preset medium `
 -c:a aac -b:a 128k -movflags +faststart output.mp4
FlagPlain meaning
-crf 22Quality (lower = better, bigger; try 20 to 26)
-preset mediumSpeed versus compression tradeoff
-movflags +faststartBetter for web playback start

Batch folder:

mkdir mp4-out
Get-ChildItem *.wmv | ForEach-Object {
 ffmpeg -i $_.Name -c:v libx264 -crf 22 -preset medium `
 -c:a aac -b:a 128k -movflags +faststart `
 "mp4-out\$($_.BaseName).mp4"
}

Older WMV files may use WMA audio. If the output has no sound, re-encode audio with -c:a aac instead of -c copy. For MKV sources, see MKV to MP4 on Windows .

Limitation: You maintain the scripts yourself.

Which method should you use

SituationStart here
Recurring folders, trim, or target sizeGetCompress
One clipClipchamp
Scripts or stubborn archivesFFmpeg

When Clipchamp is enough

Clipchamp can finish a single WMV that lands under the limit after a trim and a 720p or 1080p export.

GetCompress also helps when legacy WMV archives need one MP4 preset, when Teams or SharePoint uploads repeat, or when a portal lists an exact megabyte cap. Keep masters; convert delivery copies. It does not replace Premiere or DaVinci for editing.

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