Basic command line switch reference
Only the most usual switches are described here. However those should be sufficient
for the vast majority of users.
||average bitrate encoding
|| fast mode
||stereo mode (s, j, f, m)
||VBR quality setting (0...9)
- * --abr n average
- Turns on encoding with a targeted average bitrate of n kbits, allowing to
use frames of different sizes. The allowed range of n is 4-310, you can use
any integer value within that range.
- * -b n bitrate
- For MPEG1 (sampling frequencies of 32, 44.1 and 48 kHz)
n = 32,40,48,56,64,80,96,112,128,160,192,224,256,320
For MPEG2 (sampling frequencies of 16, 22.05 and 24 kHz)
n = 8,16,24,32,40,48,56,64,80,96,112,128,144,160
Default is 128 kbs for MPEG1 and 80 kbs for MPEG2.
- * --decode decoding
- Uses LAME for decoding to a wav file. The input file can be any input type
supported by encoding, including layer I,II,III (MP3).
- * -f fast mode
- This switch forces the encoder to use a faster encoding mode, but with
a lower quality.
- * -h high quality
- Use some quality improvements. Encoding will be slower, but the result
will be of higher quality.
This switch is always enabled when using VBR.
- * --help help
- Display a list of all available options.
- * -m s/j/m stereo
- Joint-stereo is the default mode for stereo files with VBR when -v is more
than 4 or fixed bitrates of 160kbs or less. At higher fixed bitrates or higher
VBR settings, the default is stereo.
Normal stereo mode.
In this mode, the encoder will make use of a correlation between both channels
in order to achieve higher compression. This will enhance the quality of constant
bitrate recordings, and reduce the size of variable bitrate recordings.
The input will be encoded as a mono signal.
- * -V 0...9 VBR quality
- Enable VBR (Variable BitRate) and specifies the value of VBR quality.