Convert Flash Video to MKV Video Online
Convert FLV to MKV online for free. Fast, secure file conversion with no registration required.
FLV vs MKV
| FLV | MKV | |
|---|---|---|
| Full Name | Flash Video | MKV Video |
| Category | Video | Video |
| MIME Type | video/x-flv | video/x-matroska |
| File Extension | .flv | .mkv |
| Max Upload | 500 MB | — |
How to Convert FLV to MKV
- Select your FLV file using the upload area above
- Click "Convert to MKV" to start the conversion
- Wait for the conversion to complete
- Download your MKV file
About FLV Format
FLV (Flash Video) was the dominant web video format during the Flash era. While largely replaced by MP4 and WebM for web delivery, FLV files are still encountered in legacy content and some streaming servers.
About MKV Format
MKV (Matroska) is a flexible, open-standard video container that supports unlimited audio tracks, subtitles, and chapter points in a single file. Popular for high-quality video content and media archiving.
Frequently Asked Questions
Upload your FLV file using the upload area above, then click "Convert to MKV". The conversion starts automatically and you can download the result when it's ready.
Yes, FileCraft's FLV to MKV converter is completely free with no registration, watermarks, or hidden fees. You can convert as many files as you need.
Yes. Your files are processed securely and automatically deleted from our servers after conversion. We do not store, share, or access your files.
Most video files convert in a few seconds. Larger files may take slightly longer depending on file size and complexity.
You can upload FLV files up to 500MB for free conversion. For most use cases this is more than sufficient.