Mkv and MP4

[JoshPC]

Can someone tell me what is different between the two video formats

[Arty]

Compression. 

Usability 

http://www.macxdvd.com/mac-dvd-video-converter-how-to/mkv-vs-mp4.htm

http://forums.anandtech.com/showthread.php?t=2295992

https://www.reddit.com/r/PleX/comments/2t9kbr/mkv_vs_mp4/

[Zero_Hour]

MKV, the file format for Matroska Multimedia Container, is an open standard free container format, a file format that can hold an unlimited number of video, audio, picture or subtitle tracks inside a single file. It is intended to serve as a universal format for storing common multimedia content, like movies or TV shows. MKV can hold all of the same digital elements of MP4. MKV can also compress high quality videos into smaller files.

P4 is short for MPEG-4 and succeeds the MPEG-1 and MPEG-2 formats. Like MKV, it's a container format because it includes video, audio, images, playlists, chapter markers and subtitles defined by MPEG. This container format allows to combine different multimedia streams into one file. This file format is created to contain timed media information in a flexible, extensible format in order to interchange, manage and edit multimedia.

@http://www.macxdvd.com/mac-dvd-video-converter-how-to/mkv-vs-mp4.htm

[Zero_Hour]

MKV, the file format for Matroska Multimedia Container, is an open standard free container format, a file format that can hold an unlimited number of video, audio, picture or subtitle tracks inside a single file. It is intended to serve as a universal format for storing common multimedia content, like movies or TV shows. MKV can hold all of the same digital elements of MP4. MKV can also compress high quality videos into smaller files.

P4 is short for MPEG-4 and succeeds the MPEG-1 and MPEG-2 formats. Like MKV, it's a container format because it includes video, audio, images, playlists, chapter markers and subtitles defined by MPEG. This container format allows to combine different multimedia streams into one file. This file format is created to contain timed media information in a flexible, extensible format in order to interchange, manage and edit multimedia.

@http://www.macxdvd.com/mac-dvd-video-converter-how-to/mkv-vs-mp4.htm

[wyattzx]

.MKV is a container file, that holds both the .mp4 (video) and .aac (audio) files. Though these filetypes are interchangeable, these are the two most common. The .mkv container itself is not a playable file, so much as it reads the audio and video from within the file, and plays it back. They're commonly used for movies so that you can hold multiple subtitle tracks, or even audio and video tracks.