3GP to MPA: Extract Audio from 3GP(3GP Mobile Video) Video to MPA(MPEG Audio) with River Past Audio Converter, 3GP2MPA converter, conversion
What is
3GP?
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
Player.
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 convert from 3GP video to other formats with River Past software, please
have Apple QuickTime
installed.
What is
MPA?
There are three "layers" in the MPEG-1
Audio specification.
In MPEG Audio Layer-1, a simple 32-subband audio compressor using a floating
point representation for subband samples. Resolution and scale factor are stored
for groups of 12 subsamples. MP1 is only used for Philips DCC Digital Compact
cassette with data rates of 384 kbps.
Both MPEG-1 and MPEG-2 files use MPEG-1
Audio Layer-2.
MPEG-1 Audio Layer-3 becomes
the widely popular MP3.
MPEG.ORG is an excellent source for additional
information on MPEG format and usage.
To encode MPEG Audio, you will need River
Past MPEG-2 Booster Pack in addition to your audio software.
Additional Requirements
To extract audio from 3GP(3GP Mobile Video) video to MPA(MPEG Audio) with River Past Audio Converter, you must have River Past MPEG-2 Booster Pack installed.
Launch River Past Audio Converter
Once River Past Audio Converter is installed properly, launch Audio Converter.
Add File
Click on the "Add File" button on the tool bar. The standard file open dialog appears. Select "3GPP/3GPP2 - Mobile Phone Video (*.3gp;*.3g2)" in its "Files of type" combo box.
Select the file you want to convert and click "Open". The file will be added to the conversion file list.
Note: To convert from 3GPP/3GPP2 files, you must have Apple QuickTime installed.
If you are not able to add the file, please verify your QuickTime installation since we use QuickTime to decode 3GP video. Try to play the file in QT Player.
If QT Player cannot play the file, you will need to reinstall QuickTime.
River Past Audio Converter
Select Output Format
Use the setting panel on the bottom of the window to control the output format. Click on the toggle to the left of the "Format" label to expand the panel. Select "MPA - MPEG Layer-2" as the "Audio Type".
You can change the sample rate, channel (stereo or mono) and bits/sample, and bitrate.
Note: The MPEG-2 Booster Pack must be installed for the "MPA - MPEG Layer-2" output option to show.
Select output directory
Expand the "Output Directory" panel. Use the "Browse" button to select an output directory.
Convert
Click the "Convert" button on the tool bar.
River Past Audio Converter
