Abusing SoundBuffer for file conversion

[wintertime]

I just want to make sure that using a quick Ruby script like this is a sensible thing to do and I'm not doing something very wrong.

require 'sfml/audio'
include SFML

fn_in=ARGV[0]+'.flac'
fn_out=ARGV[0]+'.ogg'

sb=SoundBuffer.new
sb.loadFromFile fn_in
sb.saveToFile fn_out
 

What got me a little nervous was that converting some 5MB .wav files with some other program produced nearly 1MB .ogg files and a script like above produced files at about half the size.
Now I know there is most likely just a different encoding quality, though I could not hear a difference and I'm happy about the reduced size from that little experiment with the script. Just to be sure, there are no obvious shortcuts taken like reducing stereo to mono, right?

[Laurent]

No, there's no such thing

[wintertime]

Thank you, that spares me of having to look for some new utility that understands .flac, after I spend too much time already searching for suitable asset files like fonts and music.