Displaying 20 results from an estimated 2000 matches similar to: "cbr/vbr decoding - supported sample rates"
2003 Mar 07
0
problem with encoding cbr (updated)
Hi,
Regarding to my previous question, I think I have found out from oggenc source code that the correct way to initialize encoding is:
vorbis_encode_init_vbr (or vorbis_encode_setup_managed for cbr etc.)
vorbis_encode_ctl (to turn off or use avg bitrate management)
vorbis_encode_setup_init
By this way, there is no problem with encoded stream. However, there is no documentation of the three
2003 Mar 07
0
problem with encoding cbr
Hi,
I am trying to encode PCM to OGG based on example code in OggVorbis SDK Win 1.0.
There is no problem with "vorbis_encode_init_vbr(&vi, 1, 44100, 0.4f);" setting.
However, using "vorbis_encode_init(&vi, 1, 44100, 96000, 96000, 96000);" setting gives such a warning by ogginfo: "Warning: EOS not set on stream 1"
I have modified ogginfo to display exact
2002 Aug 14
0
vorbis enc and ogg documentation
Hi,
How can I find more information about vorbis enc and ogg api ? sdk seems to have not enough information.
Thanks in advance.
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2003 Jan 31
1
AW: AW: PlusV algorithm -> CBR
Fredag, 31 januar 2003, skrev du:
<p>>Next thing is, that I would like to clarify the difference between
a codec's
>latency (which I would die to know in exact figures for the vorbis
codec one
>day - as well as block sizes, but that's another story) and the
(bandwidth)
>"smoothing window" latency - call it buffering or whatever.
One thing is the codec
2002 Aug 03
1
vbr / cbr / abr API calls
Hi,
Maybe this is documented somewhere, if so, please send me a link to the
documentation.
My question is: how to set up different (VBR, CBR, ABR) modes when
calling the Ogg Vorbis API?
Currently I do:
CBR:
ret = vorbis_encode_setup_managed( &vorbisInfo,
getInChannel(),
getOutSampleRate(),
2015 Jan 23
0
Opus for speech: VBR vs CBR
On 01/21/2015 07:51 PM, Daniel K wrote:
> Hi guys,
>
> I'm using Opus for speech in wide-band mode (sampling rate 16000) and
> 20ms frames with signal type set to SIGNAL_VOICE.
>
> I have a few questions here:
>
> 1.
> When I choose VBR mode, the codec seems to choose the bitrate on its own.
> However, that seems to be an issue on mobile devices. In some cases,
2008 Mar 02
1
Speex: complexity, VBR, ABR, CBR, quality
Hi All;
If someone used speex and has experience with its
settings, then who can help to explain the following:
1) When it is recommended to use VBR (vbr => true)?
2) If there relation between setting the vbr => true
and the abr value (for example to be 0 or 1 or 10) and
the relation between this value and abr (true /
false).
3) Any relation between the quality value and the abr
value?
2015 Jan 22
2
Opus for speech: VBR vs CBR
Hi guys,
I'm using Opus for speech in wide-band mode (sampling rate 16000) and 20ms
frames with signal type set to SIGNAL_VOICE.
I have a few questions here:
1.
When I choose VBR mode, the codec seems to choose the bitrate on its own.
However, that seems to be an issue on mobile devices. In some cases, when I
configure the bitrate to say 20kbps, I see that the outgoing codec bitrate
at
2001 Jul 03
2
ABR or CBR?
Just in case my quotation causeed misunderstnaing...
Forget about what I quoted before. Probably, by CBR, Monty meant ABR
since CBR is stupidly patented and this is the reason why Vorbis has
no CBR option. If you know this, it cannot be a problem but I see there
is a question asking what is ABR in the mailing list.
>On Thu 28 Jun 2001, 23:27:41 PDT, Monty (xiphmont@xiph.org)Wrote:
>then
2010 Feb 26
2
Are two passes useful in CBR mode ?
Hi,
I try to use the video tag to post videos on my blog
I'm using ffmeg2theora to transcode videos in theora
Resolution of 320x240 pixels and constant bitrate (CBR) of ~400 kbps
seems to be ok for publishing on my blog.
I've read that CBR is a better choice than VBR for web publishing
regarding the way TCP/IP works.
("In TCP it takes a while for a connection to increase its
2003 Jan 29
1
AW: PlusV algorithm -> CBR
fwiw, there are definitely applications that would use Vorbis but can't until there is a _strict_ CBR mode. Meaning, architecturally the datarate simply cannot exceed X no matter what happens to the quality. Send silence if you have to, but limit the datarate.
-dbm
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2014 Sep 04
0
[Xiph] #2027: multistream_encode(_float) fails on hard cbr encodes in libopus v1.1
#2027: multistream_encode(_float) fails on hard cbr encodes in libopus v1.1
-----------------------------------------+------------------------------
Reporter: thinktink | Owner: jmvalin@?
Type: defect | Status: closed
Priority: P3 | Milestone:
Component: Opus |
2014 Sep 04
0
[Xiph] #2027: multistream_encode(_float) fails on hard cbr encodes in libopus v1.1
#2027: multistream_encode(_float) fails on hard cbr encodes in libopus v1.1
-----------------------------------------+------------------------------
Reporter: thinktink | Owner: jmvalin@?
Type: defect | Status: closed
Priority: P3 | Milestone:
Component: Opus |
2001 Jun 17
3
Using a CBR when encoding to *.ogg
Greetings Fellow Vorbis Gurus!
How can I encode, using CDex, at a CBR (constant bit rate) rather than the VBR?
Also, can one take a 128kbs MP3 file and re-encode it to ogg? If so, please
explain the procedure.
By the way, I'm using a Windows based system.
Thank you!
/jp/
dojpaul@coffey.com
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2015 Dec 11
3
opusdec forces decode at 48k ?
opusdec -V
opusdec opus-tools f2a2e88 (using libopus unknown)
I've got an opus file encoded from a .wav off a cd, 44100Hz:
opusinfo 2-24-Overture_in_C_\(In_Memoriam\).opus
Processing file "2-24-Overture_in_C_(In_Memoriam).opus"...
New logical stream (#1, serial: 38134f1f): type opus
Encoded with libopus unknown
User comments section follows...
ENCODER=opusenc from opus-tools
2003 Sep 09
1
Should Speex VBR Introduce Distortion?
Hi All,
I've run into a small hiccup in encoding my audios with Speex. When I
encode audience laughter and applause with 'speexenc' (version 1.0.1),
the result is quite acceptable... until I enable VBR. Then it distorts
horribly.
My understanding of VBR is that it frees the encoder to vary the number
of bits emitted to better maintain the quality requested, and so I would
have
2010 Oct 02
1
Memory allocation in 64 bit R
Hi Everyone,
I am getting the following error message
Error: cannot allocate vector of size 2.6 Gb
In addition: Warning messages:
1: In dim(res$res) = dim(bi) :
Reached total allocation of 8122Mb: see help(memory.size)
2: In dim(res$res) = dim(bi) :
Reached total allocation of 8122Mb: see help(memory.size)
3: In dim(res$res) = dim(bi) :
Reached total allocation of 8122Mb: see
2008 Oct 10
0
Discontinuous encoding and VBR tradeoffs
I'm writing a voice communication application, and I've got a few
issues that I'd like to get ironed out, but I don't know enough about
the speex implementation.
First of all, this application is mainly used for conferencing - many
people are in a room and only 1-2 are ever talking at a time. So,
always encoding and transmitting everyone's audio stream would be
rather
2006 May 18
1
Unable to register channel
Hii all
I bought te110p card.
I configured zaptel.com ;
span=1,1,0,ccs,hdb3,crc4
bchan=1-15,17-31
dchan=16 and zapata.conf is;
switchtype=euroisdn
signalling=pri_net
group=1
context=nortel
dchannel => 16
channel => 1-15,17-31 I receving the following error
on my gentoo;
May 18 13:48:44 WARNING[8755]: Ignoring canpark
May 18 13:48:44 WARNING[8755]: Ignoring dchannel
May 18 13:48:44
2008 Oct 10
0
Discontinuous encoding and VBR tradeoffs
I don't know why you're getting sound carrying over to the next time you
encode - that doesn't sound normal to me. Have you tried saving and
examining the raw audio you're feeding to the encoder? Have you tried
encoding and decoding that using speexenc/speexdec?
I use Speex in VBR mode for a VoIP app. I'm always recording and running
the audio through the preprocessor