DVD (also known as "Digital Versatile Disc" or "Digital
Video Disc") is
a popular optical disc storage media
format. Its main uses are video and data storage. Most DVDs are of the same
dimensions as compact discs (CDs) but store more than six times as much data.
DVD-Video discs respectively refer to
properly formatted and structured video content. It uses MPEG-2
for video compression, with AC-3,
MPEG audio for multi-channel audio support.
To decode DVD, you will need both GPL
MPEG-2 Decoder, and AC-3
The 3rd Generation Partnership Project
(3G/3GPP) is a collaboration agreement that was established in December 1998.
The 3GPP and 3GPP2 specifications call out specific types of media that can
exist in .3gp and .3g2 files.
Once you move a video from cell phone to your PC, the easiest way to play
it is to use Apple's QuickTime
In general, if a cell phone record a 3g2 video, it should conform to the
3G2 standard. However, a cell phone may not has the ability to play all variety
of 3G2 videos due to limited codec support on the cell. Thus, it is easy to
convert a cell phone 3G2 to a video format playable on a computer, but it is
not so easy to convert a PC video to a 3G2 which is compatible with your particular
brand of cell phone.
To encode 3G2 video in River Past software, you will need River
Past 3GP Booster Pack, and need to have Apple QuickTime
River Past Video Cleaner