Video Mode
PAL: The TV system used in Europe and Australia. 625 lines by 50Hz.
NTSC: The TV system used in United States, Canada and Japan. 525 lines by 60Hz.
Since an Audio DVD is in fact a DVD-Video disk, it needs to include a video stream. Although the image is not used (black image) and all DVD players support both systems, the video mode can be important when you want to see the onscreen display used by the DVD player to display title, track and time information. It is recommended that you choose the mode that is used in your country, or the system that matches closest.
On disk insert
Stop: This matches normal CD behavior, which does not automatically play when you insert a disk.
Play first album: This matches normal DVD behavior, which automatically starts playing.
Volume name
This is the name that will be used as DVD name.
Encoding mode
PCM: Pulse Coding Modulation
- The same system as used on CD.
- CD uses 44.1kHz 16 bits, DVD-Video uses 48/96kHz 16/20/24 bits.
MP1: MPEG-1 Layer 1
- This system was originally designed for use on Philips DCC (Digital Compact Cassette).
- The goal was to obtain at least CD quality, with a compression factor of 4.
- Recommended bit rate: 384 kbps.
- Warning: Might not work on all DVD players, first test this mode with a rewritable disk.
MP2: MPEG-1 Layer 2
- This system was originally designed for use on the Video-CD.
- The goal was to obtain near CD quality with a lower bit rate then with MP1.
- Recommended bit rate: 224 kbps.
DVD-Video does not support MP3, simply because this is not part of the specification.
Video Stream
Full stream
- Recommended to use with PCM mode.
- The most compatible video stream, should work with all DVD players.
- All player functions are enabled.
- Disadvantage: takes quite some space in the stream, therefor not really suitable for MP1 or MP2 mode.
One frame per GOP
- Recommended for use with MP1 or MP2 mode when 'one frame per song' does not work.
- Might not work on all DVD players, first test this mode with a rewritable disk.
- Fast forward and rewind functions will not work.
- Disadvantage: takes quite some space in the stream, but less then 'full stream' mode.
One frame per song
- Recommended for use with MP1 or MP2 mode.
- Might not work on all DVD players, first test this mode with a rewritable disk.
- Fast forward and rewind functions will not work.
- After stop and resume, the time on the DVD player display might not work until the next song.
- Advantage: does almost take no additional space in the stream.
Psycho Acoustic Model
1 Musicam
- Simple tonal and noise masking threshold generator.
- Recommended for lower complexity applications like MP1.
2 AT&T
- More sophisticated cochlear masking threshold generator.
- Gives better subjective quality at low bit rates, therefor recommended for MP2.
Multiplier
The multiplier is a bit the opposite of oversampling. A DAC uses oversampling to create multiple values of one sample, usually to increase the resolution of the actual conversion (which is limited to a few or even only one bit).
The multiplier works the other way around by using multiple values to calculate one sample. The different values are combined using a carefully selected weighted function.
Mathematically the most optimal values for the multiplier are prime values (2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59 and 61). Unfortunately prime values are also the slowest to calculate. The fastest values to calculate are a power of 2 (4, 8, 16, 32 and 64), but these are in theory also the least optimal values.
So in short: use prime values for best sound quality, and use non-primes for more speed. Also the higher the multiplier, the slower the process.
Usage: DVD2one2 ar|audioremaster [-option] ...
-i[input filename]
Input filename. If omitted, standard console input is used.
-o[output filename]
Output filename. If omitted, standard console output is used.
-m[multiplier]
Multiplier value. Values 2-64 are accepted. Default is 2.
-s[samplerate]
Samplerate value. Values 48000 and 96000 are accepted. Default is 48000.
Using the commandline interface it is possible to access the Audio Remaster engine from the SqueezeCenter to upsample in realtime.
Below is the basic convert.conf script:
flc flc * *
# FT:{START=--skip=%t}U:{END=--until=%v}
[flac] -dcs %START% %END% -- $FILE$ | [DVD2one2] ar -m7 | [flac] -cs --totally-silent --compression-level-0 -
wav flc * *
# F
[DVD2one2] ar -i$FILE$ -m7 | [flac] -cs --totally-silent --compression-level-0 -
ape flc * *
# F
[mac] $FILE$ - -d | [DVD2one2] ar -m7 | [flac] -cs --totally-silent --compression-level-0 -
Using on PC Windows
Assuming that DVD2one V2 is installed in its default folder C:\Program Files\DVD2one V2, change [DVD2one2] in above script to "c:\program files\dvd2one v2\dvd2one2" (including the quotes).
The convert.conf file can be found in C:\Program Files\SqueezeCenter\server.
Using on Mac OS-X
If DVD2oneX V2 is installed in the Application folder, change [DVD2one2] in the above script to /Applications/DVD2oneX2.app/Contents/MacOS/DVD2onex2
If DVD2oneX V2 is installed on your desktop, change [DVD2one2] in the above script to ~/Desktop/DVD2oneX2.app/Contents/MacOS/DVD2onex2
The convert.conf file can be found in /Library/PreferencePanes/SqueezeCenter.prefPane/Contents/server.