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AVI is a multimedia container format introduced by Microsoft. It can store video and audio using various codecs and is widely supported across devices and platforms. Although less efficient than newer formats, AVI remains popular for its simplicity and compatibility.
MKV is a flexible, open-source multimedia container format. It can hold video, audio, subtitles, chapters, and metadata in a single file. MKV is widely used for high-definition movies and streaming, supporting multiple audio tracks and subtitle languages.
Convert your .avi files to .mkv right in your browser — no downloads, no installs. Everything happens securely in the cloud.
We never store your files permanently. Only you can access them, and they’re automatically deleted from our servers within 2 hours.
Turn your AVI files into MKV in just a couple of clicks. No registration, no limits — and it’s 100% free.