7 Jul
2004
7 Jul
'04
9:02 a.m.
From man oggenc:
<quote>
--managed
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
streaming.
Specifying a maximum and average bitrate, and enforcing these.
oggenc infile.wav --managed -b 128 -M 160 out.ogg
</quote>
Regards,
Pete.
Robert Jonsson wrote:
On Tuesday 06 July 2004 14.35, Jan Depner wrote:
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.
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.
Jan
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
http://www.rjamorim.com/test/multiformat128/results.html
suggests that the alternative vorbis encoder
http://www.geocities.jp/aoyoume/aotuv/ gives superior quality (to the
standard encoder, and pretty much anything else).
/Robert