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Topic: -q0 -h and --lowpass setting (Read 1521 times) previous topic - next topic

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  • lunasnow
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-q0 -h and --lowpass setting
if I use Lame

add -q0 or -h parameter can provide better quality ?

Should I use -q0 or -h setting?


--lowpass or -Y can provide better quality in same bits ?

(ex: "-b320 vs -b320 --lowpass 18"  or  "-V1.3 vs -V1 --lowpass 18"  or  "-V2.5 vs -V2 -Y" )
  • Last Edit: 27 December, 2012, 09:36:04 AM by lunasnow

  • [JAZ]
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-q0 -h and --lowpass setting
Reply #1
If you use a VBR setting (like -V0, -V2 etc..), the use of -q0 or -h won't make any difference. (It changes nothing)

The change in quality from using --lowpass or -Y is directly related to the signal (i.e. if it matters), and to how the codec can distribute the bits that would have been used by the data filtered (--lowpass) , made less precise (-Y).

In other words, if you use to encode classical music, neither --lowpass nor -Y might help much. If you encode heavy metal or similar, --lowpass or -Y might make quite a difference in bitrate.
If then you shift the quality to compensate for the bitrate, evidently it will have higher quality.