What is MP4?
Mp4 refers specifically to MPEG-4 Part 14. A standard audio and video container that is part of the MPEG-4 specification. The official file extension's name is .Mp4
It is similar to the popular video format AVI, but MP4 has more advantages:
MP4 support for embedded subtitles (AVI can have, but only used in DivX6), MP4 is better than AVI which supports for video coding standard H.264, also known as MPEG4 AVC. As codified, an MP4 file can be created with several different types of codec including DivX and XviD. But as DivX and XviD are relatively well served by the encoded AVI file (which is much more popular), it is more common you find a MP4 which consists of streams created by unusual codecs.
What is MKV?
MKV is a container for the video data. Thus, MKV can contain data from several different types of encodings (or codecs) for video, its greatest usefulness is the synchronization of video data with audio, with the titles and subtitles etc.
Which program you can trust to convert MP4 to MKV directly?
Direct MKV Converter can convert video to mkv directly without compression. It supports input formats such as avi, wmv, asf, mpg, vcd or dat. If extra codecs are installed, the program may convert more video files like divx, xvid, ogm or dv to mkv. Because the program does not decode and encode video, the speed is extremely fast, but the conversion may not succeed each time.
For more information, please go to http://www.008soft.com/
Step by step of converting mpeg4 file with the file extension .MP4 to MKV, after you have downloaded the above powerful program.
1. Click the Open Video button, select a video file.
2. Enter an output mkv file name if necessary.
3. Click the Convert button to convert video to mkv file.
Done!




