Convert FLV to MKV — Free Online
Convert Flash Video to Matroska Video format online. Open container with advanced features. Free converter with no registration, no watermarks....
Drop files here or click to browse
Supports: FLV files
Max: 100MB (free) · 2GB (Pro)
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HTTPS encrypted uploads
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Files auto-deleted after processing
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Works Everywhere
Any browser, any device
How to Convert
Upload your .flv file by dragging it into the upload area or clicking to browse.
Choose your output settings. The default settings work great for most files.
Click Convert and download your .mkv file when it's ready.
About FLV to MKV Conversion
Video format compatibility remains a challenge in our multi-device world. While FLV files work perfectly in Archived web content, they may encounter issues on other platforms. Converting FLV to MKV solves these compatibility problems, creating videos that play reliably on smartphones, smart TVs, computers, and streaming devices alike.
Why Convert FLV to MKV?
**Software Integration:** Many applications expect MKV input specifically. Converting from FLV ensures smooth integration with editing software, content management systems, and publishing workflows.
**Quality Preservation:** Our converter uses optimized encoding settings that preserve media quality during the FLV to MKV conversion. The output maintains the characteristics that matter for your use case.
**Workflow Efficiency:** Rather than struggling with incompatible FLV files, converting to MKV streamlines your workflow. Spend time on creative work, not format troubleshooting.
Common Use Cases
- Play Archived web content content on devices without FLV support
- Import FLV footage into video editing software requiring MKV
- Stream video content using MKV's optimized delivery
- Archive FLV videos in the more universal MKV format
- Prepare FLV content for web embedding and HTML5 players
- Share FLV videos on social media platforms that prefer MKV
How It Works
Our converter leverages FFmpeg multimedia framework for precise FLV to MKV transformation. This professional-grade engine handles Flash container format, now deprecated with Flash Player input and produces open standard container supporting virtually any codec combination output.
The conversion process decodes your FLV content fully, then re-encodes using MKV's optimal settings. This ensures multiple audio tracks in the final file.
Processing happens on secure cloud infrastructure with automatic file deletion after conversion. Your video files never touch local storage.
Quality & Performance
Our optimized settings balance quality preservation with MKV format efficiency. The result meets professional standards for HD video archival.
Start converting your FLV files to MKV format now. Our free online converter delivers high-quality results with fast processing, secure handling, and no software installation required.