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MP3/mp3PRO plug-in

How you can make an audio CD from mp3 or mp3PRO files.........................................1

The mp3PRO encoder .......................................................................................................2

How you can make your own mp3PRO files with Nero..................................................3

How you can make your own MP3 files with Nero........................................................12

How you can make an audio CD from mp3 or mp3PRO files

Launch 'Nero' and the dialog for creating a new disk

will appear. Select as disc type 'CD' and highlight

the 'Audio CD' icon on the left and the appropriate

tab ('index card') will open. The 'Audio CD' index

card will be on top. Activate the 'Write CD TEXT on

CD' check box if your recorder supports this

function.

Click on the 'New' button.

Now you only need to use 'drag and drop' to pull the

MP3/mp3PRO files from the file browser into the

compilation window together with your chosen audio

CD selection. Change to the directory containing the

MP3/mp3PRO files, highlight the files you want and

drag them into the compilation window.

Note the blue bar in the lower part of the window. It

will show how many minutes of music or how much

space is still left on the CD.

Summary of content (18 pages)

PAGE 1
MP3/mp3PRO plug-in How you can make an audio CD from mp3 or mp3PRO files.........................................1 The mp3PRO encoder .......................................................................................................2 How you can make your own mp3PRO files with Nero ..................................................3 How you can make your own MP3 files with Nero ........................................................
PAGE 2
When you are ready, click on the 'Burns the current compilation' button or select the 'Burn compilation' command in the 'Recorder' menu to start the burn dialog. The 'Burn Compilation' dialog box will now open – this is the same as what you see when you are making a new compilation. However, the 'Burn' tab (index card) is now on top. Check the following steps, paying particular attention to the writing speed and the method of writing. Click on the 'Burn' button to begin the writing procedure.
PAGE 3
The mp3PRO encoder You can encode audio files in the MP3 or mp3PRO format with the mp3PRO encoder plug-in. An mp3PRO file is about half the size of an MP3 file – but the quality is the same. Both formats share the 'mp3' file extension How you can make your own mp3PRO files with Nero Using Nero, you can create mp3PRO format compressed files (*.mp3) in two different ways. The first method allows you to encode existing audio files (*.
PAGE 4
You do not need to highlight the selected file(s) because all the files displayed will be encoded. Click on the dropdown button in the 'Output file format' and highlight 'mp3PRO (*.mp3)'. Click on the 'Browse' button in the 'Target file' area to indicate the directory where you would like the file to be saved. The 'Source file info' field is for your information and gives details about the quality of the file to be encoded. Click on the 'Settings' button to display the parameters for encoding.
PAGE 5
Bitrate: 'Bitrate' means the number of bits stored per second in the mp3PRO file. The higher this is, the smaller the amount of information that has to be removed from the original sound file. Therefore the higher the bitrate, the better the sound quality. Of course, the price paid for this sound quality is a larger file. The mp3PRO file format lets you encode at either a constant or a variable bitrate (VBR). Select the option you prefer and specify the bitrate.
PAGE 6
Expert settings If you click on the 'Expert' button, the dialog will be extended, allowing special options to be chosen that are not relevant to the 'normal' user. Original bit: This means that the mp3PRO file is an original and not a copy. This information can be important in relation to future copy protection options and is also of value to the user for information purposes. Private bit: The user can set this bit however he or she wants.
PAGE 7
Click on 'OK' if you are satisfied with the settings and to close the dialog. Click on the ‘GO' button to begin encoding. A window will appear and inform you of the progress of the encoding procedure.
PAGE 8
(2) Encoding audio CD tracks Select the 'Save Tracks' command in the 'Extras' menu. A window will open and show all the disk drives installed, i.e. the recorder, the 'normal' CDROM/DVD drive and (if appropriate) a Nero ImageDrive. Select the CD drive containing the original audio CD and click on 'OK'. A window will now appear with a list of the audio tracks that can be found on the original CD.
PAGE 9
Encoding quality: The quality of the psychoacoustic model with Nero is excellent. Naturally, a compromise needs to be found between the complexity of the model and the computing time needed. Depending on the intended application of the mp3PRO file, the quality of the encoding (i.e. of the acoustic model) can be set at 'fast', 'medium' and 'highest'. With the highest quality, encoding takes place at approx. normal speed on a PII350, i.e. three minutes of music will be encoded in three minutes.
PAGE 10
Variable bitrate: With a variable bitrate, the audio file is not encoded with a specified, constant bitrate but the encoding depends on the individual elements of the audio file instead. Complex elements are compressed less than simple ones, so that the result is an mp3PRO file that depending on the desired quality offers the best possible, loss-free result. The medium quality has proved itself to be a fairly good compromise between sound quality and file size.
PAGE 11
Allow Downmix: This option makes it possible to 'downmix' the input signal from stereo to mono. This has advantages when encoding a stereo source with a very low data rate - and where encoding in mono only would make sense. Padding: Because mp3PRO blocks within an mp3PRO file can be of different sizes and because some mp3PRO player programs cannot cope with MP3PRO different sized blocks, this option can be selected to specify how to deal with mp3PRO blocks of different size.
PAGE 12
How you can make your own MP3 files with Nero Using Nero, you can create MP3 format compressed files (*.mp3) in two different ways. The first method allows you to encode existing audio files (*.wav) that are located on your hard disk or a CD-ROM (but not on an audio CD). The second method permits the tracks on an audio CD to be encoded. With Nero, you can convert up to 30 files into the MP3 or mp3PRO format and then obtain the mp3PRO encoder plug-in from our Website.
PAGE 13
Click on the 'Enable mp3PRO' button again if mp3PRO is activated and if you want to encode files in the MP3 format. Encoding audio files as MP3 files is always bound up with losses. When encoding, psychoacoustic models are used to remove "inaudible" acoustic elements from the audio file. Most test listeners can hardly (or not at all) distinguish between the sound from MP3 files that have been stored with a sufficiently high bitrate from the original files.
PAGE 14
Constant bitrate: A bitrate of 128 KB per second has proved itself to be a fairly good compromise between sound quality and file size. At this bitrate, audio files, very roughly speaking, are compressed by somewhat more than a factor of 10. This means that a normal track of around three to four minutes in length (in CD quality; in other words 44.1 kHz, 16 Bit, stereo) can be compressed to a 3 - 4 megabyte MP3 file by these means.
PAGE 15
Click on 'OK' if you are satisfied with the settings and to close the dialog. Click on the Go' button to begin encoding. A window will appear and inform you of the progress of the encoding procedure.
PAGE 16
(2) Encoding audio CD tracks Select the 'Save Tracks' command in the 'Extras' menu. A window will open and show all the disk drives installed, i.e. the recorder, the 'normal' CDROM/DVD drive and (if appropriate) a Nero ImageDrive. Select the CD drive containing the original audio CD and click on 'OK'. A window will now appear with a list of the audio tracks that can be found on the original CD.
PAGE 17
Encoding quality: The quality of the psychoacoustic model with Nero is excellent. Naturally, a compromise needs to be found between the complexity of the model and the computing time needed. Depending on the intended application of the MP3 file, the quality of the encoding (i.e. of the acoustic model) can be set at 'fast', 'medium' and 'highest'. With the highest quality, encoding takes place at approx. normal speed on a PII350, i.e. three minutes of music will be encoded in three minutes.
PAGE 18
Variable bitrate: With a variable bitrate, the audio file is not encoded with a specified, constant bitrate but the encoding depends on the individual elements of the audio file instead. Complex elements are compressed less than simple ones, so that the result is an MP3 file that depending on the desired quality offers the best possible, loss-free result. The medium quality has proved itself to be a fairly good compromise between sound quality and file size.