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WMV to MP4 (H.264) - Online Video Converter
Convert WMV to MP4 (H.264) online. Private, client-side - no uploadrequired. Batch conversion, quality presets, codec control.
Convert WMV to MP4 (H.264)
Drop WMV video here or click to select
WMV, ASF
MP4 (H.264) (H.264 / AAC)
About WMV to MP4 (H.264)
Convert WMV to MP4. WMV pairs Microsoft's WMV video with WMA audio in an ASF wrapper. MP4 pairs H.264 video with AAC audio in the ISO base media container. H.264 has no alpha channel, so transparency is dropped..
Why convert WMV to MP4 (H.264)?
- Smaller files with MP4 lossy compression.
- Keep animation and transparency where supported.
- Private, no upload - runs in your browser.
WMV vs MP4 (H.264)
| Animation | Yes | Yes |
|---|---|---|
| Transparency | No | No |
| Compression | lossy | lossy |
| Typical use | WMV pairs Microsoft's WMV video with WMA audio in an ASF wrapper. | MP4 pairs H.264 video with AAC audio in the ISO base media container. |
When not to convert WMV to MP4 (H.264)
- Skip MP4 for archival masters: lossy compression discards detail, so keep the WMV original.
- Keep a master copy: repeated exports stack small losses, so archive WMV before batch MP4 shares.
Limits
Starting point: WMV - WMV pairs Microsoft's WMV video with WMA audio in an ASF wrapper. Protected store files cannot be converted; use DRM-free sources. H.264 has no alpha channel, so transparency is dropped. Encode MP4 (H.264 / AAC) from WMV at a bitrate near the source, and confirm the audio track before converting.
How conversion works
Conversion runs entirely in your browser with FFmpeg WASM. Files never leave your device.
Related conversions
FAQ
How do I convert WMV to MP4 (H.264)?
Drop your WMV file onto this page, choose quality and codec settings, then click Convert. The result downloads as MP4 (H.264) instantly. All processing runs in your browser.
What codec is used for MP4 (H.264)?
The default codec for MP4 (H.264) is H.264 / AAC. You can change the video and audio codec in Advanced mode.
How do you store my files?
We do not store any processed videos. All conversion happens entirely in your browser using FFmpeg WASM.