Convert WMV to FLV Online Free
Convert Windows Media Video WMV files to FLV for Flash-based video platforms, RTMP streaming workflows, and legacy browser video players. ChangeThisFile uses FFmpeg on secure servers for private, fast conversion.
ChangeThisFile converts WMV to FLV free using FFmpeg on secure servers. Upload your Windows Media Video with encrypted transfer, receive an FLV download, and the file is automatically deleted. No signup or software installation required — completely free.
Convert WMV to FLV
Drop your WMV file here to convert it instantly
Drag & drop your .wmv file here, or click to browse
Convert to FLV instantly
WMV vs FLV: Format Comparison
Key differences between the two formats
| Feature | WMV | FLV |
|---|---|---|
| Full Name | Windows Media Video | Flash Video |
| Developer | Microsoft | Adobe Systems |
| Container | ASF (Advanced Systems Format) | Flash Video Container |
| Video Codec | WMV9 / VC-1 | H.263, VP6, H.264 |
| Audio Codec | WMA, WMA Pro | MP3, AAC, Nellymoser |
| Platform | Windows | Flash Player (deprecated) |
| Streaming Protocol | Windows Media Services, MMS | RTMP |
| Web Delivery | Requires Windows codec | Flash Player required (deprecated) |
When to Convert
Common scenarios where this conversion is useful
Flash Platform Content Migration
Convert Windows Media Video content to FLV for upload to legacy Flash-based CMS platforms or video portals that expect FLV input.
RTMP Streaming Archives
Prepare WMV recordings for injection into RTMP streaming infrastructure or for archiving alongside existing FLV libraries.
Legacy Flash Website Video
Supply FLV video content for older websites with embedded Flash video players that cannot play WMV files.
Flash E-Learning System Upload
Convert WMV training videos to FLV for upload to e-learning systems still running on Adobe Flash-based video delivery.
Cross-Format Legacy Media Library
Convert WMV archive files to FLV to consolidate a mixed-format Flash-era video library into a uniform FLV format.
How to Convert WMV to FLV
-
1
Upload Your WMV File
Click to select or drag your Windows Media Video WMV into the converter. All uploads use HTTPS encryption for secure transmission.
-
2
Server-Side FFmpeg Conversion
FFmpeg transcodes the VC-1 video from your WMV to H.264 in an FLV container with AAC audio for Flash-compatible playback.
-
3
Download Your FLV File
Your FLV file is ready to download when conversion finishes. The original WMV is permanently and automatically deleted from our servers.
Frequently Asked Questions
FLV is required for legacy Flash-based video platforms, RTMP streaming servers, and older embedded video players. While Flash is deprecated, some archival and enterprise systems still require FLV input.
Yes. VLC, MPC-HC, and other modern media players support FLV playback without Adobe Flash Player, which was officially discontinued in 2020.
The FLV output uses H.264 video encoding with AAC audio, providing the best compatibility with Flash players and the highest quality for the format.
DRM-protected WMV files cannot be converted. This tool supports only unprotected WMV files.
Files up to 50MB are supported. Trim larger WMV files before uploading.
Yes. Files are uploaded with HTTPS encryption and automatically deleted from our servers after your download completes. No data is retained.
Most WMV to FLV conversions complete in 30-90 seconds depending on file size.
Yes. FFmpeg preserves the source resolution and frame rate from your WMV in the FLV output.
WMA audio is re-encoded as AAC in the FLV output, which may introduce minor quality changes. FFmpeg uses high-quality settings to minimize this.
Yes. Completely free with no accounts, no subscriptions, and no watermarks.
Related Conversions
Ready to convert your file?
Convert WMV to FLV instantly — free, no signup required.
Start Converting