Required Software:
BeSweet
BeLight
In the DVD and TV backup world, there's one audio tool you should be familiar
with, and that is BeSweet. No other tool is as suited for the tasks at hand.
BeLight is one of the many GUIs available for BeSweet, and is the most up-to-date
so I'm going to use it in this guide.
Step 0: First time setup
Copy both BeLight and BeSweet to the same folder.
Step 1: Encoding
To add files to be encoded, simply drag and drop them from Windows Explorer
to the input are in BeLight:

The easiest way to get on the way is to use one of the existing encoding presets:
AC3/MP2/MP3/WAV to MP3
Select
one, then press the Start Processing button and you're under way.
If you prefer more control, you can of course configure BeSweet just the way
you want it. First of all, you can configure all the codec
agnostic settings. Once you have done that, select the MP3 tab to
configure the MP3 encoder. The first choice you have to make is the encoding
mode:
Selecting
Bitrate allows you to use the bitrate based mode. In that mode, you can
enforce a certain bitrate. In Quality mode, the encoder will try to reach
the desired quality level and use whichever bitrate is necessary to reach the
desired quality.
In Bitrate mode, you an then use the bitrate slider to set your desired
bitrate. If you check Restrict Encoder to Constant Bitrate, you enforce
a CBR audio stream. If you don't check it, the audio stream will use variable
bitrate.
In Quality mode, you have the quality slider to work with. 100 is the
best quality you can achieve, 10 the lowest. If you hover over the slider's
current position, BeLight will show you an approximation of the bitrate you
should get at the current setting.

Finally, we have the Operational Options.
Check
Mono Encoding if your target format is mono (if your source is mono,
so should your target). You can click on Other Settings to access the more advanced
options of the MP3 encoder, but generally you shouldn't reconfigure them unless
you can explain what they do..
AC3/MP2/MP3/WAV -> Ogg Vorbis
Select
one, then press the Start Processing button and you're under way.
If you prefer more control, you can of course configure BeSweet just the way
you want it. First of all, you can configure all the codec
agnostic settings. Once you have done that, select the VORBIS tab
to configure the Vorbis encoder. The first choice you have to make is set the
number of channels of the output:
If
your source only has 2 channels, Stereo is the obvious choice here. If
your source has 5.1 channels and you want to keep all the channels, you have
to select 5.1.
In the Bitrate Management section, you configure which mode the encoder
is going to use:
Selecting
Bitrate allows you to use the bitrate based mode. In that mode, you can
enforce a certain bitrate. In Quality mode, the encoder will try to reach
the desired quality level and use whichever bitrate is necessary to reach the
desired quality.
In the Quality section, you can then quality of your output:
Move
the slider to reach your desired quality level. BeLight will automatically show
you which setting will achieve roughly which bitrate. Keep in mind that the
actual bitrate may vary.
In Bitrate mode, you can configure your desired bitrate in the Bitrate
section:
Selecting
Constant Bitrate Mode enables CBR encoding and limits the configuration
to selecting the desired bitrate. In Average Bitrate Mode, the encoder
can vary the bitrate, and you can set a maximum and minimum bitrate using the
Max. BitrateMin. Bitrate fields respectively. and
AC3/MP2/MP3/WAV -> MP2
Select
one, then press the Start Processing button and you're under way.
If you prefer more control, you can of course configure BeSweet just the way
you want it. First of all, you can configure all the codec
agnostic settings. Once you have done that, select the MP2 tab to
configure the MP2 encoder. The first choice you have to make is the encoding
engine:
Initially,
due to licensing restrictions, BeSweet had to use MP2Enc as an audio
encoder, but a license change in TooLame enabled its integration. For
the best quality, keep TooLame selected.
Using the slider in Bitrate Management, you can then configure the bitrate.
Keep
in mind that for VCD output, the bitrate must be 224 kbit/s, whereas for SVCD
output it can be lower. Most people use 160 or 192 kbit/s for SVCD.
Finally we have the Encoder Options:
Make
sure Encoding Mode is checked and set to Joint-Stereo. This setting
allows the encoder to find similarities between the left and right audio signal
and only encode those once, thus preserving bitrate that can be used elsewhere.
If your audio is mono, you may want to set this to Mono instead.
AC3/MP2/MP3/WAV -> AC3
Select
one, then press the Start Processing button and you're under way.
If you prefer more control, you can of course configure BeSweet just the way
you want it. First of all, you can configure all the codec
agnostic settings. Once you have done that, select the AC3 tab to
configure the AC3 encoder. The first choice you have to make is set the number
of channels of the output:
If
your source only has 2 channels, Stereo is the obvious choice here. If
your source has 5.1 channels and you want to keep all the channels, you have
to select 5.1.
In the Bitrate section, you can then configure the bitrate.
5.1
AC3 is normally encoded at 384 kbit/s, whereas 2.0 AC3 normally uses 192 kbit/s.
Going below 256 kbit/s for 5.1 AC3 will result in significant quality degradation,
and the same applies when going to 128 kbit/s or lower for 2 channel audio.
AC3/MP2/MP3/WAV -> AAC
Select
one, then press the Start Processing button and you're under way.
Note that the presets are divided into two sections: HE and LC, corresponding
to HE AAC and LC AAC respectively. If you have standalone compatibility in mind,
better check if your device supports HE AAC. For PC playback, you can safely
use HE AAC.
If you prefer more control, you can of course configure BeSweet just the way
you want it. First of all, you can configure all the codec
agnostic settings. Once you have done that, select the AAC tab to
configure the AAC encoder. The first choice you have to make is set the number
of channels of the output:
If
your source only has 2 channels, Stereo is the obvious choice here. If
your source has 5.1 channels and you want to keep all the channels, you have
to select 5.1.
In the Bitrate Management section, you can then configure the bitrate.
Check
Constant Bitrate Mode to enable CBR output, and select a bitrate afterwards.
In Variable Bitrate Mode, you can only chose from a list of presets.
Streaming or Normal are most applicable for DVD backups. To get an idea of which
preset gives you which bitrate range, click through the AAC presets and look
for the appropriate preset name.
Finally we have the AAC Nero Encoder Options:
Check
Profiles to select between the HE and LC AAC profile. AS
previously mentioned, not every hardware device can handle HE AAC, but if it
can, HE AAC allows for lower bitrates at the same quality than LC AAC.
Check Quality to select the encoding mode: Fast uses a new encoding
engine whose results may surpass the results of the High mode. Despite
what Fast might make you think, encoding speed is the same for both modes.
The other options should not concern you. Export ISO 13818-7 AAC Track
allows you to get a raw .AAC file rather than an AAC track inside an MP4 file.
Downmix to Mono would enable mono downmix, but if you need this, better
active it in the BeSweet options instead.
BeLight Codec Agnostic settings
The Azid Settings are broken into two parts: Dynamic Compression,
which is accessible from the main GUI window, and all the other settings which
are only available in the Advanced Settings window.
Dynamic
Compression does the same thing your player does during playback of an AC3 file:
it reduces the dynamic range so that you can hear weak signals (like voices)
better. Leave this at Normal or set it to Light (most players
use normal).
BeSweet can resample your audio source using the high quality SSRC resampler.
There are two scenarios where you should consider resampling: Your source doesn't
have a sampling rate of 48000 Hz and you're encoding a file that is to be put
on a DVD. DVDs require 48000 Hz, so resampling is a must. The other scenario
is that you have a 48000 Hz source and are encoding for a VCD/SVCD, which requires
41000 Hz. I consider this an optional resampling in this scenario, because DVD
players generally can handle (S)VCDs even with an audio sampling rate that is
not specs compliant.
Either
way, if you need resampling, check Output Sampling Rate and select the
appropriate sampling rate from the dropdown.
BeSweet offers different ways of increasing the volume of the output, so you
won't have to turn the volume knob on your stereo when watching one of your
DVD backups, and wake up all your neighbors if you forget to turn the volume
back and putting in an audio CD after watching a movie. One of those options
is using Boost.
Checking
Boost Mode allows you to select one of the different volume boost options.
The options differ in how much different frequencies are being boosted. If you
want to use this option, I suggest you experiment to find the proper setting.
The volume increase option I suggest is using BeSweet's OTA.
Check
Mode to enable an volume increase option. Depending on which audio codec
tab is active, you have 3 options: HybridGain, PreGain and PostGain.
If possible, use HybridGain. HybridGain is a combination of the
other two modes: PreGain decodes the audio to find out how much the volume
can be increased without causing any overflows. This requires two passes over
the audio, and is thus the slowest mode. PostGain encodes the audio at
the original volume level and then increases the volume after encoding using
special mechanisms that are not available for all codecs. HybridGain
applies a 10db from the start, and then uses the same mechanism as PostGain
to increase the volume level after encoding where applicable.
If you load an audio source, BeLight will automatically look at the filename,
and if it contains a delay value, will fill in the delay value. If you have
a source for which this is not done, check Delay and enter the appropriate
value on your own. Note that delays can be negative (meaning the first X milliseconds
of the audio will be skipped), or positive (in which case BeSweet adds X milliseconds
of silence at the beginning).
View or Edit BeSweet Command Line allows you to preview the commandline
BeLight has created, and to edit the commandline.
All other generic settings are available if you click on the Advanced Settings
button.
First of all we have the Azid Settings
If
your input is a 5.1 channel AC3 (the default for most DVDs), and your output
is to have only 2 channels, you'll want to put the LFE (subwoofer) channel into
the main stereo channels and reduce its volume level to prevent distortion during
explosions and such. Hence check LFE to LR Channels and set it to -3dB.
If your input is a 2 channel source or your output is to have 5.1 channels,
uncheck this option.
Output Mode allows you to configure the surround downmix mode. Check
if if your input has 5.1 channels and the output has 2.0 channels. Stereo
creates a 2.0 channel downmix without any surround channels. Setting it to dplii
creates a Dolby Surround 2 compatible downmix which yields the best quality
for Dolby Surround 2 compatible stereos, while remaining compatible to stereo
and Dolby Surround capable setups. Finally, dpl would create a standard
Dolby Pro Logic Downmix.
Dialog Normalization Reduction can be used to reduce audio volume normalization
for the center channel.
Checking Normalize to allows you to force normalization to a specific
volume level (that is to level out the dynamic range so that voices and other
quiet sounds on the original DVDs can be heard properly in the end). I suggest
not to use this option but instead use the BeSweet OTA options in the
main window.
Using the SoundTouch options, you can change the length of your audio
track:
The
one option you are most likely to use here is the Convert Frame Rate from
option. Simply plug in the original framerate of your source and the framerate
of your converted video and BeLight will adjust the audio length accordingly
so that the audio will remain in synch with the video.
Since changing the length of an audio track will change the speed of the audio
track, voices will no longer sound the same. That is where the other options
come in. Using the Pitch option, you can effectively adjust the tone of voices
to match the original movie (something which is not done when American movies
are brought to European DVDs, or the other way around). Since SoundTouch is
a rather complex subject, I suggest that you use the options not explained here
with great care, and refer to the BeSweet
commandline manual for the full gist on what all those options do and how
they are supposed to be used.
If you want to limit encoding to a certain range of the input file, you can
use the Partial Encodings options.
Check
Start Point to make BeSweet start encoding at the desired point in seconds
from the start of the audio track, and check End Point to set the point
up to which BeSweet will encode.
I won't go into the External Plugins as they are too complex to be treated here,
so let's proceed directly to the Others options.
If
you are interested in using the SuperEqualizer, please refer to the SuperEqualizer
thread in the forum.
You can use Append Silence of to add silence to the beginning of your
output. I don't see much use for that in DVD backups, because you can also use
the Delay option to add silence, so this seems kind of redundant.
By default, when writing MP3 files, BeSweet adds an ID3 tag identifying the
file and indicating that it was created by BeSweet. You can check No ID3
Tags to disable this mechanism.
You should always keep Output Log File checked so that BeSweet's operations
will be logged, and that potential errors can easily be identified. By default,
BeSweet will overwrite its logfile for each operation, so you can check Append
Log Output to the end of existing file to make sure nothing is overwritten.
For a complete reference of all BeSweet options, please refer to the BeSweet
Commandline Reference.
THE END