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Download App for only $15MKV (Matroska) is a flexible open container that supports multiple audio, video, and subtitle tracks, while AVI is a classic Microsoft container format with broad software compatibility. This conversion is frequently needed for editing software compatibility, social media uploads, device playback, or reducing file size without sacrificing quality. MediaForge handles MKV to AVI conversion directly in your browser via FFmpeg compiled to WebAssembly — no file size limits, no cloud uploads, and no registration required. Drop your MKV file above, hit convert, and download your AVI output immediately.