MPEG-4, commonly known as MP4, is a format file created to provide DVD quality of audio and video in a very small file size. It is ideal for playing on portable MP4 players like the iPod Video and mobile phones that are equipped with a technology to playback MP4 files.
There are sites on the web that allow you to download YouTube videos and save them in MP4 format. These sites do not require a converter as they use compressed domain transcoder technology to converts FLV to MPEG quickly and with less losses.
On the other hand, you can download a converter software to convert videos from YouTube into different formats like the MP4. Some converters can convert YouTube videos into several formats while a few can convert into one or two file formats.
FLV stands for Flash Live Video and it is the type of video file used by YouTube, Reuters and Google videos. Some converters retain the FLV extension file of the video instead of converting into another format. There are video and audio players that can play FLV files.
The 3GP is a multimedia file created by the Third Generation Partnership Project of 3GPPP used on 3G mobile phones. It can also be used by 2G and 4G mobile phones. With this technology, it is possible to play and view videos from mobile phones and Pods.
The file extension .3GP is a simplified standard of the MP4 designed to reduce the amount of storage required and decrease the bandwidth requirements established to accommodate for mobile phones.
Another file format into which you can convert YouTube videos is the AVI. AVI stands for Audio Video Interleave, and it is a multimedia container format that allows you to playback synchronously audio and video files like the DVD video format.
The AVI files support multiple streaming audio and video, and also use the file format extensions created by the Matrox OpenDML group. AVI was creadtMicrosoft in 1992 as a component of its videos for Windows Technology.
DivX files use the media format DMF or DivX Media Format with .divx as its file extension. As a media container format, it is used for the MPEG-4 Part 2 codec. Its features include interactive video menus, multiple subtitles, multiple audio tracks, and multiple video streams.
You can convert YouTube videos into .divx files and have them played on your DivX player, which you can download for free from certain websites. Another option file for you to consider is the wmv.
WMV stands for Windows Media Video. It was originally developed by Microsoft for internet streaming applications as a competitor of RealVideo. If you convert YouTube videos into WMV file, you must have Windows Media Player, RealPlayer, MPlayer, VLC Media player or KMPlayer.