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MKV is a format of media files. It can include a number of different file types of audio tracks and subtitle tracks, and its video encoding has a very large degree of freedom, which can be DivX, XviD, or even types of stream video such as Real Video, etc. In fact, it is a whole new type multimedia container format called Matroska. This advanced, open-source package format has shown us a very good prospect. Some people see it as a replacement for AVI.

MP4 format, like MKV, is just a packet format. It is widely used in portable media players. It has many different specifications and different players can only play certain specifications. MP4 format is defined on the base of MPEG4 Part 1 specification standard. But the format itself is quite common, not only used to store MPEG4 video formats. For example, Mp4 files may contain H.263 video stream and AMR audio track rail. So although it has no relationship with MPEG4 video compress algorithm, it is definitely a legitimate MP4 files and can be played by many players. In this sense, Mp4 is an independent packet format. Maybe the original design intent is only for MPEG4, but in fact users think it is very easy to use.

So if we have MKV files that cannot be played on devices like PSP, ipod, iphone and ipad, what shall we cope with them? Here we have a tool that can change MKV files into MP4 file. “MKV Transformer” is a powerful video converter and video editor for MKV formats. With it you can convert almost all kinds of popular formats such as RM, RMVB, VOB, DAT, VCD, DVD, SVCD, ASF, MOV, QT, MPEG, WMV, MP4, 3GP, DIVX, XVID, AVI into MKV format. Also you can change MKV files into AVI and MKV formats. It has the characteristic of easy using, high speed of converting and high level of video quality. It also supports the batch conversion.

The feature of this software is as follows:

(1) The interface is simple, easy to operate for users.

(2) Support all popular video formats to MKV and MKV to AVI and MP4 files.

(3) Support batch conversion.

(4) Use the newest codec with fast encodes speed and high video quality.

(5) Shut-down your computer after conversion is supported.

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Ecchi MKV Converter is a convert tool for HD videos in MKV format. It can transform MKV files into any format and it supports the export of high-definition formats. It loads the subtitle in MKV files automatically and allows users to choose the audio track they want. It has its own parameter auto-change technology which can achieve the fastest speed and smallest file volume in the premise of guaranteeing video quality.

It is currently the most professional MKV video converter software, film and television production by many professional organizations on the Internet. Echi MKV converter supports MKV format video converter to AVI, MP4, H.264, etc. and dozens of general and high definition video formats. It also and supports the video file played on iPad, iPhone, iPod, iTouch, the brand MP4, MP5 player, the brand mobile phones, SONY PSP, high-definition players, high definition TV broadcast equipment that you can easily transform your MKV files into formats that can be played on those devices by press the relative buttons.

The video format to be imported: MKV

The video format to be exported: generally used video formats such as MP4, WMV, AVI, REAL VIDEO as well as several of high definition video formats.

The main audio formats it supports are: WAV, MP3, OGG, WMA, M4A and lossless audio formats such as APE.

It supports video files directly export for portable devices such as phones, PSP, PS3, MP4 players，iDevices and so on.

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