Convert WMV to FLV
Free online WMV to FLV converter. No signup required.
Drag & drop your file here
or click to browse
Max file size: 100 MB
When to convert WMV to FLV
Use this conversion when your destination needs FLV and you have a WMV source. Keep the original so you can compare the result or try another supported format.
Video is re-encoded using the selected output’s defaults. Image quality, audio and metadata can change. Check playback and duration in the application where you will use it.
WMV vs FLV: Format Comparison
Side-by-side comparison of the source and target formats.
| Property | WMV (Source) | FLV (Target) |
|---|---|---|
| Extension | .wmv | .flv |
| Full Name | WMV Video | Flash Video |
| Compression | Lossy | Lossy |
| File Size | Varies | Varies |
| Best For | Legacy Windows video libraries and media coll… | Legacy web video archives and content migration |
| Browser Support | Limited | Limited |
How to Convert WMV to FLV
Follow these simple steps to convert your file in seconds.
Choose a WMV file
Select or drop one file up to 100 MB. Its extension must match this converter. Availability is checked before transfer.
Convert to FLV
Video is re-encoded using the selected output’s defaults. Image quality, audio and metadata can change. Check playback and duration in the application where you will use it.
Download and check the result
Use Download after conversion completes. Open the result and check its content, quality and formatting before sharing it. Download links expire one hour after upload finishes. Uploaded and converted files are removed automatically by regular cleanup. Files may become unavailable sooner when the service restarts.
Tips for Converting WMV to FLV
Practical advice to get the best results from this conversion.
Why this conversion is worth doing
WMV Video has a known limitation: proprietary format with poor cross-platform compatibility. Flash Video addresses this with a key advantage: compact file sizes with acceptable streaming quality. Converting from WMV to FLV is most worthwhile when this specific trade-off matters for the way you intend to use the file.
Match the format to the actual workflow
WMV Video is most commonly used for legacy windows video libraries and media collections, while Flash Video is the standard for legacy web video archives and content migration. If your workflow is closer to the second pattern, converting makes sense. If you are still working in a context where WMV is the norm, converting may create unnecessary compatibility friction with collaborators or tools that expect the source format.
Watch for this limitation in the FLV output
Flash Video has its own limitation worth understanding before you commit: obsolete format since Adobe Flash Player reached end-of-life in 2020. After the conversion completes, open the FLV file and verify that this limitation does not affect your specific use case — for some workflows it is irrelevant; for others it can be a deal-breaker.
Avoid transcoding unless necessary
Every time you transcode (re-encode) a video, some quality is lost unless you use a lossless codec. If you only need to change the container format without changing the codec, use a remux (stream copy) operation instead of a full re-encode. This preserves original quality and is much faster.
Understanding WMV and FLV Formats
Learn about the source and target file formats to understand what happens during conversion.
Source Format
WMV Video
video/x-ms-wmvWMV (Windows Media Video) is a proprietary video compression format developed by Microsoft, based on the Advanced Systems Format (ASF) container. It was designed for streaming and local playback on Windows platforms and includes built-in DRM support for content protection. WMV has largely been superseded by H.264/MP4 for most modern use cases.
Advantages
- Good compression efficiency, especially at low bitrates
- Native support in Windows Media Player and Windows ecosystem
- Built-in DRM support for protected content distribution
Limitations
- Proprietary format with poor cross-platform compatibility
- Not supported on iOS, many Android players, or web browsers without plugins
- Declining usage and relevance in modern video workflows
Common Uses
- Legacy Windows video libraries and media collections
- DRM-protected video content from older platforms
- Windows-based screen recordings and presentations
Target Format
Flash Video
video/x-flvFLV (Flash Video) is a container format that was used to deliver video content over the internet via Adobe Flash Player. It typically contains video encoded with Sorenson Spark or VP6 codecs and audio in MP3 or AAC format. FLV was once the dominant web video format but became obsolete after major browsers discontinued Flash Player support in 2020.
Advantages
- Compact file sizes with acceptable streaming quality
- Simple container structure that is quick to parse
- Large existing archive of legacy web video content
Limitations
- Obsolete format since Adobe Flash Player reached end-of-life in 2020
- No modern browser supports FLV playback without third-party tools
- Limited codec support compared to modern containers like MP4
Common Uses
- Legacy web video archives and content migration
- Converting old Flash-based video content to modern formats
- Historical video content from early streaming platforms
Frequently Asked Questions
Common questions about converting WMV to FLV.
Related Conversions
Explore other conversions related to WMV and FLV.