AVI to MKV Converter
Drop your AVI video here
Convert AVI to MKV — free, fast, server-powered
Video is uploaded, converted server-side, then auto-deleted after 60 min.
How to Convert AVI to MKV Online
Drag & drop or click Browse. Max 2 GB.
Choose bitrate for output quality.
Click Convert, wait for FFmpeg, then download. Auto-deleted after 60 min.
Why Convert AVI to MKV?
Converting AVI to MKV upgrades your video to a modern container with support for subtitles, chapters, and multiple audio tracks — all features AVI lacks.
About the AVI Format
AVI is one of the oldest video container formats, introduced by Microsoft. It can hold video and audio data compressed with various codecs, or even uncompressed video. AVI files tend to be large but maintain high quality, making them common in video editing and legacy media libraries.
AVI was introduced by Microsoft in 1992 as part of Windows 3.1. Despite its age, it remains widely used due to its simplicity and broad codec support, though modern formats like MP4 and MKV have largely replaced it for distribution.
✅ Advantages
- Simple, widely recognized container format
- Supports many different video and audio codecs
- High compatibility with Windows-based software
- Good for archival of uncompressed video
❌ Disadvantages
- Large file sizes compared to modern formats
- No native support for subtitles or chapters
- Limited streaming capability
- Outdated metadata and indexing features
About the MKV Format
MKV is a flexible, open-source video container that can hold virtually unlimited video, audio, and subtitle tracks in a single file. It supports nearly every video and audio codec available, making it the preferred format for high-quality video archival, Blu-ray rips, and media libraries.
The Matroska format was launched in 2002 as an open-source alternative to proprietary containers. Named after Russian nesting dolls (Matryoshka), it was designed to be a universal container for multimedia content.
✅ Advantages
- Supports virtually any video/audio codec
- Multiple audio tracks and subtitle streams in one file
- Chapter support and rich metadata
- Open-source and royalty-free
- Excellent for high-quality archival
❌ Disadvantages
- Not natively supported by many mobile devices
- Poor browser support for web playback
- Not accepted by most social media platforms
- Slightly larger overhead than MP4
Frequently Asked Questions
Why convert AVI to MKV instead of MP4?
MKV is better if you need multiple subtitle tracks, audio languages, or chapter markers. For simple playback and sharing, MP4 is usually sufficient.
Does this conversion re-encode the video?
If the original AVI codec is compatible with MKV (most are), the streams can be remuxed without re-encoding, preserving original quality.