MKV to AVI Converter
Need to convert this file type? Drop it below — or drop any other file and we'll auto-switch. Outputs are auto-deleted after 2 hours; share links expire after 4.
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Drop multiple images to combine them into one PDF, Word document, or PowerPoint presentation — or convert each image separately.
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Convert MKV to AVI online
Use this MKV to AVI converter to turn MKV files into AVI right in your browser — ideal for legacy Windows video and older recordings.
When should you convert MKV to AVI?
- To reduce file size and make uploading and sharing easier
- When you need it for legacy Windows video
- When you need it for older recordings
- To open your files in apps that prefer AVI
What happens to your file
MKV to AVI is a full re-encode, not a container swap: the video is decoded and re-compressed with MPEG-4 Part 2 at qscale 5, and the audio is re-encoded to MP3 (libmp3lame) at VBR quality 4. AVI is written with the older MPEG-4 Part 2 codec rather than H.264, because that is what legacy AVI players and editors actually decode. It is a weaker codec: at matching quality the file is usually larger than the H.264 original.
Settings this conversion runs with
| Engine | ffmpeg |
|---|---|
| Video codec | MPEG-4 Part 2 |
| Video quality | qscale 5 |
| Audio codec | MP3 (libmp3lame) |
| Audio bitrate | VBR quality 4 |
What changes
- The MKV picture is decoded and re-compressed with MPEG-4 Part 2, so this is a generation loss: the output is built from an already-compressed source, not from the original camera data. Converting MKV to AVI and back will soften the clip a little more each time.
- Only one video and one audio stream reach the AVI file. Additional audio languages, embedded subtitle tracks, and chapter markers are not carried across.
About MKV and AVI files
MKV video
Strengths
- holds many tracks
- flexible container
- high quality
Limitations
- not supported on all devices
AVI video
Strengths
- widely recognized
- simple container
Limitations
- large files
- dated format
MKV vs AVI
| Format | MKV | AVI |
|---|---|---|
| Compression | Lossy | Lossy |
| Transparency | — | — |
| Best for | high-quality video, multiple audio and subtitle tracks | legacy Windows video, older recordings |
Related tools
Frequently asked questions
- Does converting MKV to AVI re-encode the file?
- MKV to AVI is a full re-encode, not a container swap: the video is decoded and re-compressed with MPEG-4 Part 2 at qscale 5, and the audio is re-encoded to MP3 (libmp3lame) at VBR quality 4. AVI is written with the older MPEG-4 Part 2 codec rather than H.264, because that is what legacy AVI players and editors actually decode. It is a weaker codec: at matching quality the file is usually larger than the H.264 original.
- What should you know before converting MKV to AVI?
- The MKV picture is decoded and re-compressed with MPEG-4 Part 2, so this is a generation loss: the output is built from an already-compressed source, not from the original camera data. Converting MKV to AVI and back will soften the clip a little more each time.
- Is this MKV to AVI converter free?
- Yes. You can convert MKV to AVI online for free, with no account and no watermark.
- Do I need to install software or sign up?
- No. Use the converter from your browser without installing software or creating an account. Files are uploaded to our servers for processing.
- Will converting MKV to AVI reduce quality?
- AVI uses lossy compression, so the file can get smaller while some visual quality may change.
- Are my files safe?
- Yes. Files are processed only to complete the conversion and are auto-deleted after 2 hours. We never share them.