Matroska
Open SourceMatroska, often referred to by its file extension MKV, is a flexible, open-standard, and freely available multimedia container format. It is designed to encapsulate an unlimited number of video, audio, picture, or subtitle tracks into a single file, providing a future-proof framework for multimedia delivery.
Key Features
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Highly flexible, supports a wide range of audio, video, and subtitle codecs.
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Can contain multiple audio and subtitle tracks in a single file.
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Supports advanced features like chapters, metadata, and attachments.