ARCHOS 400 - Manual (Page 34)

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MP3 Sound Codec
If MPG4 Translator detects a suitable MP3 codec on your PC, it will use
it, and your video file sound track will be MP3. Otherwise, it will use the
standard IMA ADPCM codec. There are MP3 encoders (usually packaged
together as an encoder and decoder) available on the Web for you to
download. If you choose to use the LAME codec, make sure that you have
a version built with the ACM front-end. You can find other MP3 codecs on
the web by using the search terms ACM, MP3 and CODEC in your favorite
web search engine. Once this MP3 codec is installed into your system,
MPG4 Translator will be able to create final video files with MP3 sound,
even if the source video file does not have an MP3 sound track.
If you are unsure what codecs (audio
and/or video) have been installed on your
computer, you can see the list by going to
the following location.
For Windows XP, click on Start > Settings
> Control Panel > Sounds and Audio
Devices Properties > Hardware >
choose Audio Codecs, then click on
Properties. You will find a list here of
all the audio codecs that are installed on
your computer. Decoding of MPEG 2 video
files is currently not supported by MPG4
Translator. These are usually .mpg or .mpeg
format files, not the required AVI file. There are other tools found on the
Internet (FlaskMPEG, Rippack, etc.) that may be downloaded in order to
help you with these file types. A good starting place is the website www.
digital-digest.com.