MPEG-1 to M4A: Extract Audio from MPEG-1(MPEG-1 Video) Video to M4A(MPEG-4 Audio) with River Past Audio Converter, MPEG-12M4A converter, conversion
The first MPEG format for compressed video, optimised for CD-ROM. MPEG-1
was designed for the transmission rates of about 1.5 Mbps achievable with Video-CD
and CD-i. Its compression algorithms
allow better than VHS quality video and almost CD quality audio to be compressed
onto and streamed off a single speed (1x) CD-ROM drive. MPEG encoding can introduce
blockiness, colour bleed and shimmering effects on video and lack of detail
and quantisation effects on audio. The official name of MPEG-1 is International
MPEG.ORG is an excellent source for additional
information on MPEG format and usage.
Because of its exceptional performance and quality, Advanced
Audio Coding (AAC) is at the core of the MPEG-4,
3GPP and 3GPP2
specifications and is the audio codec of choice for Internet, wireless and digital
broadcast arenas. AAC provides audio encoding that compresses much more efficiently
than older formats, such as MP3,
yet delivers quality rivaling that of uncompressed CD audio.
To encode MPEG-4 audio, you need to have River
Past MPEG-4 Booster Pack in addition to your audio software.
To extract audio from MPEG-1(MPEG-1 Video) video to M4A(MPEG-4 Audio) with River Past Audio Converter, you must have River Past MPEG-4 Booster Pack installed.
Launch River Past Audio Converter
Once River Past Audio Converter is installed properly, launch Audio Converter.
Click on the "Add" button on the tool bar. The standard file open dialog appears. Select "MPG - MPEG Video" 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 "M4A - MPEG-4 Audio" as the "Audio Type".
If you have MPEG-4 Booster Pack installed, but don't see M4A as an output option, you have a problem with QuickTime installation.
Please make sure you have the latest QuickTime installed. Occasionally, QuickTime may be corrupted due to conflict with some other software. In any case, reinstalling QuickTime should fix this problem.
You can change the sample rate, channel (stereo or mono) and bits/sample, and bitrate.
Note: To convert to MPEG-4 audio, you must have River Past MPEG-4 Booster Pack installed.
Select output directory
Expand the "Output Directory" panel. Use the "Browse" button to select an output directory.
Click the "Convert" button on the tool bar.
River Past Audio Converter