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Topic: Does "Lame -m j -V 4 -q 2 -lowpass 11 -b 64" produce a VBR o (Read 2216 times) previous topic - next topic

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  • njsain
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Does "Lame -m j -V 4 -q 2 -lowpass 11 -b 64" produce a VBR o
The parameters "-m j -V 4 -q 2 -lowpass 11 -b 64" and Lame version 3.98r are reported by mediainfo when I open a audiobook mp3 file I downloaded from e-music. Both mediainfo and mp3tag report this file as being a CBR file, but from reading the VBR documentation here http://lame.sourceforge.net/vbr.php using the -V option produces a VBR file even without the -v parameter and the -b parameter sets the minimum bit rate instead of forcing a constant bit rate. Is that correct or am I missing something? What would be the advantage of using -V 4 when encoding a CBR file?

Nathan

  • lvqcl
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Does "Lame -m j -V 4 -q 2 -lowpass 11 -b 64" produce a VBR o
Reply #1
Encode a file with "-h -b 64" and MediaInfo will show the parameters you quoted.

  • njsain
  • [*]
Does "Lame -m j -V 4 -q 2 -lowpass 11 -b 64" produce a VBR o
Reply #2
Thanks lvqcl! Any idea why mediainfo is reporting the encoding settings that way? Is it a mediainfo error or is it from the Lame header of the file?

  • [JAZ]
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Does "Lame -m j -V 4 -q 2 -lowpass 11 -b 64" produce a VBR o
Reply #3
-m j, V4 (when using only -v) are defaults (and -h equals to -q2).
I think it probably has to do with the Lame header, which stores a "quality" value and some related data (but not the switches themselves).
From there, part of the information can be obtained, but part of it might have no sense.