HydrogenAudio

Lossy Audio Compression => MP3 => MP3 - General => Topic started by: arandor on 2020-07-17 05:23:01

Title: A Couple of Lame v3.100 Questions
Post by: arandor on 2020-07-17 05:23:01
1. I've seen the LAME `-V` parameter written as `-V0` and `-V 0`. Are they the same or does the presence of a space have some significance?

2. The Hydrogenaudio Wiki entry for LAME (http://wiki.hydrogenaud.io/index.php?title=LAME#Technical_information) says that `-V 0` is an alias for `--preset extreme` and that neither uses a lowpass filter. In fact, it says `-V 0` is the only `-V` option that does not use a lowpass filter. However, I have used LAME v3.100 with three different GUI apps as well as the command line and they all use a lowpass filter with `-V 0`. If I specify `-V 0` and no other parameters at all, LAME v3.100 uses the following encoder settings: `-m j -V 0 -q 0 -lowpass 22.1 --vbr-new -b 32`.

Is it supposed to be using a lowpass filter? Does the Hydrogenaudio wiki entry for LAME need to be updated to reflect the use of a 22.1 KHz lowpass filter with `-V 0'?

Thanks
Title: Re: A Couple of Lame v3.100 Questions
Post by: lvqcl on 2020-07-17 17:33:49
If I specify `-V 0` and no other parameters at all, LAME v3.100 uses the following encoder settings: `-m j -V 0 -q 0 -lowpass 22.1 --vbr-new -b 32`.
MediaInfo doesn't show actual encoding parameters, it's just a guess.
Title: Re: A Couple of Lame v3.100 Questions
Post by: arandor on 2020-07-17 17:50:34
Quote
MediaInfo doesn't show actual encoding parameters, it's just a guess.

Thanks for the info!
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