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mkv/avi to mp4


mkv/avi to mp4 converts mkv and avi files in h264 video to mp4 files without reencode the video stream. Subtitle will be embed as soft subtitle. Convert speed is fast as video is not reconverted. Works on iPad, etc. mp4box, mkvextract, beSweet, eac3to, mediainfo are used.

Free software
Released:Sep 19,2010
File size:9.6MB
9 votes

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Latest version

1.0.8 (September 19, 2010)


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Download mkv/avi to mp4 1.0.8  [9.6MB]  [Win]  [Portable]

Download old versions

Download mkv/avi to mp4 old versions

Supported operating systems



Free software

Version history / Release notes / Changelog

- Add option menu for more flexible control, include subtitle size, switch on/off auto return, etc.
- Add the function to specify subtitle directly.
- Add detailed media info tab.
- update eac3to to v3.24, upgrade mkvtoolnix to 4.3.0[2010-09-04]

- Fixed the subtitle conversion bug.
- Fixed the bug that failed to change profile level to 3.1

View full changelog

All features

- Video: Convert mkv/avi files in h264 to mp4 files without re-encode video stream.
- Audio: Support audio format : dts/ac3/mp3, it will be converted to AAC.
- Subtitle: support srt subtitle, it will be embed as soft subtitle (ttxt) into mp4. srt files need to be put in the same folder with mkv, and use the same name, ex: for aaa.mkv.
- Convert speed is fast and don't need fast CPU as it only convert audio, video stream will be copy directly.
- Works on iPad. Subtitle can be recognized properly in iPad, the font size is also adjusted to get best view in iPad.
- mp4box, mkvextract, beSweet,eac3to,mediainfo are used.

- As this tool use Nero AAC Encoder which is free but can not be redistrubted.
You will need to go to visit nero web site to download it freely.
And then copy NeroAacEnc.exe to the same folder with mkv2mp4.exe
- Run mkv2mp4.exe

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9 reviews, Showing 1 to 5 reviews

Been using this for a couple of months to remedy a problem with some TV MKV WEB-DL and movies both, which will not play on either of my stand alone BR players. Simple and very quick conversion and every file has the same quality as the MKV and plays perfectly in my BR players. I would highly recommend this software. It has also made the files smaller as it changes the audio.

May 22, 2013 Version: 1.0.8 OS: Windows 7 64-bit Ease of use: 10/10 Functionality: 10/10 Value for money: 10/10 Overall: 10/10

Converted an MKV with DTS as audio, default settings, have Quicktime, when uploading to YouTube:

Alert icon
The video you uploaded may have audio/video sync issues. Please refer to this article for advice on how to correct this issue should it arise.

Final product on YouTube was adequate but the speech seemed out of sync by a few milliseconds (hardly noticeable).

Cool software, thanks!

Jan 31, 2012 Version: 0.218 (January 02, 2012) OS: WinXP Ease of use: 10/10 Functionality: 10/10 Value for money: 10/10 Overall: 9/10

we recently bought sony ex520 and i converted MKV files to mp4(to size less than 4gb) but they always stop playing half way when used fwd with an error message "playback ot available". I tested various encoders like handbreak, xvid4psp,freemake etc. but no use. finally i tried mkv2mp4 to change the container and then reencoded using freemake to reduce the size below 4gb. (mkv file is a Blueray disk rip to 4.35gb, play time 2hrs.45min). excellent result and worth trying. just one thing it lacking is encoding function to resize the mp4 file.

May 21, 2011 Version: 1.08 OS: Vista Ease of use: 10/10 Functionality: 10/10 Value for money: 10/10 Overall: 8/10

Just have a try my software, I can promise you, it can help you alot.

Jan 11, 2011 Version: 1.0 OS: Windows 7 Ease of use: 8/10 Functionality: 4/10 Value for money: 7/10 Overall: 5/10

First, it crashed on my system, too. After downloading the source and running a debug it was obvious the MediaInfo.dll in the "mkv/avi to mp4" package that caused the problem. I didn't want to change the code and tried to substitute the MediaInfo.dll.
Fixed the problem replacing the delivered MediaInfo.dll (0.7.33) with the newest version (0.7.39). And it worked!
Great program, thanks!

Jan 10, 2011 Version: 1.0.8 OS: Windows 7 64-bit Ease of use: 10/10 Functionality: 10/10 Value for money: 10/10 Overall: 10/10

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