Convert MKV to FLV

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MKV vs FLV Format Comparison

Aspect MKV (Source Format) FLV (Target Format)
Format Overview
MKV
Matroska Video

Open-source container supporting multiple video, audio, subtitle tracks, and rich metadata.

Matroska
FLV
Flash Video

Adobe Flash container format designed for web streaming and progressive download.

Web
Container/Codecs

Supports H.264, HEVC, VP9 with AAC, MP3, Vorbis audio tracks.

Typically H.264, VP6, or Sorenson Spark video with MP3 or AAC audio within FLV container.

Compression

High efficiency with modern codecs and flexible track support.

Moderate efficiency optimized for streaming with progressive download.

Quality

Superior quality potential depending on codec choice.

Good quality for web delivery; limited compared to modern formats.

File Size

Variable: small to large, based on streams and settings.

Medium (5–20 MB per minute) optimized for web streaming.

Compatibility

Supported by VLC, MPC, FFmpeg; limited native web support.

Native support in Adobe Flash Player and legacy web browsers with Flash plugin.

Streaming Support

Supports HTTP streaming and HLS with proper packaging.

Excellent progressive streaming support via Flash Media Server and RTMP.

Use Cases
  • High-definition archiving
  • Multi-track media projects
  • Legacy web streaming
  • Flash-based applications
  • Online video portals
Advantages
  • Flexible, open-source container
  • Rich feature support
  • Established streaming format
  • Wide Flash Player support
Disadvantages
  • Requires modern players for full support
  • Obsolete with Flash deprecation
  • Limited mobile and HTML5 support
Tooling & Ecosystem
  • FFmpeg
  • MKVToolNix
  • VLC
  • Adobe Flash Media Server
  • FFmpeg
  • Video.js with Flash fallback
Metadata Support

Extensive metadata: chapters, tags, attachments.

Basic metadata support: cue points and stream info.

Why Convert MKV to FLV?

Converting MKV to FLV makes your videos compatible with legacy Flash-based websites and applications, enabling progressive download and RTMP streaming.

Our converter uses FFmpeg to transcode or remux your streams into FLV container, optimizing for web delivery with minimal buffering.

FLV remains a widely supported format for older browsers and Flash players, ensuring accessibility for users on legacy platforms.