Subject: Re: [linux-audio-user] How do you make an ogg?
From: Laura Conrad (lconrad_AT_laymusic.org)
Date: Sat Oct 12 2002 - 17:39:42 EEST
>>>>> "Mark" == Mark Knecht <markknecht_AT_attbi.com> writes:
Mark> You might also ask how to get the mp3 file UP to the size of the ogg
Mark> file? ;-)
I could, but for this particular purpose small size is more important
figure of merit than high quality. The major use of these files is to
put up rehearsal recordings the day after rehearsal, so that members
of the group can listen and hear what they need to practice. Probably
everybody is using their computer speakers to listen to them. My
computer speakers are better than average, and I can *just* hear the
difference between the MP3 quality and the .wav quality if I listen
very hard. And it isn't an important difference in terms of hearing
what I need to practice.
Mark> I have no experience with ogg encoders, but my guess would be that you
Mark> want to reduce bit rate first, if that's an option, and maybe try variable
Mark> bit rate encoding if it is supported. You will, however, certainly hear the
Mark> difference.
OK, setting various bitrates, I get:
[lconrad_AT_tuba renfaire]$ ls -l hercules*
-rw-rw-r-- 1 lconrad lconrad 4411392 Aug 17 09:51 hercules1.mp3
-rw-rw-r-- 1 lconrad lconrad 48685100 Aug 17 09:01 hercules1.wav
-rw-rw-r-- 1 lconrad lconrad 12222427 Oct 12 10:30 hercules2-b128.ogg
-rw-rw-r-- 1 lconrad lconrad 7612630 Oct 12 10:27 hercules2-b64.ogg
-rw-rw-r-- 1 lconrad lconrad 49956480 Aug 18 16:36 hercules2.cdr
-rw-rw-r-- 1 lconrad lconrad 12222427 Oct 12 10:17 hercules2-M128.ogg
-rw-rw-r-- 1 lconrad lconrad 12222427 Oct 12 10:24 hercules2-M64.ogg
-rw-rw-r-- 1 lconrad lconrad 4526080 Aug 18 14:14 hercules2.mp3
-rw-rw-r-- 1 lconrad lconrad 12220015 Sep 3 12:30 hercules2.ogg
-rw-rw-r-- 1 lconrad lconrad 49956104 Aug 18 14:09 hercules2.wav
(There's an example of using -M as the maximum bitrate, but the -M
option isn't listed, and doesn't seem to have any effect.)
hercules2-b64.ogg is usable, although I don't think it's as high
quality as the mp3, which is encoded with "lame -b 128". And it's
still twice as big. Is this something that will change with newer
versions of oggenc?
-- Laura (mailto:lconrad_AT_laymusic.org , http://www.laymusic.org/ ) (617) 661-8097 fax: (801) 365-6574 233 Broadway, Cambridge, MA 02139
This archive was generated by hypermail 2b28 : Sat Oct 12 2002 - 17:39:26 EEST