Subject: Re: [linux-audio-user] ogg confusion
From: Pete Harlow (peter.harlow_AT_thales-transportservices.com)
Date: Wed Jul 07 2004 - 09:48:12 EEST
From man oggenc:
Set bitrate management mode. This turns off the normal VBR
encoding, but allows hard or soft bitrate constraints to be
enforced by the encoder. This mode is much slower, and may also
be lower quality. It is primarily useful for creating files for
Specifying a maximum and average bitrate, and enforcing these.
oggenc infile.wav --managed -b 128 -M 160 out.ogg
Robert Jonsson wrote:
> On Tuesday 06 July 2004 14.35, Jan Depner wrote:
>>That sets the nominal bitrate. What you are seeing is the actual
>>bitrate for sections that don't need to be encoded at 128. In other
>>places it will go above 128. Play your .ogg on xmms and watch the
>>bitrate display. I don't use the -b switch when I encode. I normally
>>just use -q 5.
>>On Tue, 2004-07-06 at 04:19, Atte André Jensen wrote:
>>>I'm trying out oggenc under linux/unstable, but I'm confused! Using
>>>"oggenc -b 128" ends with a file with bitrate around 60-70 acording the
>>>the report printed by oggenc...
> If I remember correctly vorbis does not have a constant bitrate option. The -b
> is probably used only for "hinting" at which bitrate you wish to have. It
> could very well be as Jan suggests, it will get higher after a while, or it's
> simply a bug.
> Anyway you are probably better of using the -q switch.
> For your information. Testing done lately
> suggests that the alternative vorbis encoder
> http://www.geocities.jp/aoyoume/aotuv/ gives superior quality (to the
> standard encoder, and pretty much anything else).
This e-mail and any attachment may contain confidential and privileged material intended for the addressee only.
If you are not the addressee, you are notified that no part of the e-mail or any attachment may be disclosed,
copied or distributed, and that any other action related to this e-mail or attachment is strictly prohibited,
and may be unlawful.
If you have received this e-mail by error, please notify the sender immediately by return e-mail, and delete
this message. Thales, its subsidiaries and/or its employees shall not be liable for the incorrect or incomplete
transmission of this e-mail or any attachments, nor responsible for any delay in receipt.
This archive was generated by hypermail 2b28 : Wed Jul 07 2004 - 13:55:21 EEST