MPA to OGG: Convert Audio from MPA(MPEG Audio) to OGG(OGG Vorbis Audio) with River Past Audio Converter, MPA2OGG converter, conversion

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.

What is OGG?

Ogg Vorbis (sometimes just called Vorbis) is an open source patent-free audio compression format, developed as a replacement for proprietary digital audio encoding formats, such as MP3, VQF, and AAC. Vorbis files (which have an .ogg extension) compress to a smaller size than MP3 files, which reduces bandwidth and storage requirements. According to many reports, Vorbis provides better sound quality than MP3.

To encode OGG Vorbis audio with River Past software, please have either Torbias' OGG DirectShow Filters or Radlight Ogg Media Filters 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 "MPA - MPEG Audio" 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.

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 "OGG - OGG Audio" as the "Audio Type".

Note: To convert to OGG files, you must have OGG Vorbis DirectShow filters installed.

You can change the compressor, and depending on the compressor, you can change the sample rate, channel (stereo or mono), bits/sample, and bitrate.

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