[mp3encoder] Is 16-bits the only sample size?

2004-02-27 Thread Bob Ingraham 
I apologize in advance if this question is naive,
but after reading through lame.h, I was wondering
if any sample size besides 16-bit is supported in
MPEG audio (such as 8, 24 or 32 bit sample sizes)?

I am working on a video/audio streaming algorithm
that requires me to adapt the multiple audio parameters
(such as number of channels and sampling frequency,)
in order to give more room to the video stream at
certain points in time.

Anyway, I was wondering if the sample size could be
altered as well.

Thanks,
Bob

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[mp3encoder] Re: Some Amd64 timings

2004-02-27 Thread Thomas 
Hello James

On 26.02.04, you wrote:

>> "Alexander" == Alexander Leidinger <[EMAIL PROTECTED]> writes:
> 
>> As gcc should be able to utilize MMX, SSE, SSE2 and 3dnow
>> with inline assembly now, it would be nice if someone would
>> try to use it instead of using a 3rd party assembler.
> In short, they should be easier to use well than raw assembly,
> whether inlined or external.

What about the much more powerful Altivec/VMX ?

Regards
-- 
Pegasos PPC

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[mp3encoder] [gss03@doc.ic.ac.uk: Re: Help! can't encode with lame...]

2004-02-27 Thread Warren Toomey 
- Forwarded message from guy strelitz <[EMAIL PROTECTED]> -

  Date: Fri, 27 Feb 2004 14:02:59 +
  From: guy strelitz <[EMAIL PROTECTED]>
  To: [EMAIL PROTECTED]
  Subject: Re: Help!  can't encode with lame...

Quoting [EMAIL PROTECTED]:

> You are not allowed to post to this mailing list, and your message has
> been automatically rejected.  If you think that your messages are
> being rejected in error, contact the mailing list owner at
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Sorry.  I'm very stressed at the moment, had a quick read of the contact page,
and  clearly didn't quite understand how it worked.

Is there any way you can post my message (below)?
It'll be a tremendous help if I can get some assistance with this.


Thanks.
And sorry to take your time so.


Guy.

--

Subject: Help!  can't encode with lame...


I hope it's not a chutzpah mailing this request to this list.  I don't know
where else to ask...

And you may recognise this post from the Audiocoding.com forum, where I've just
posted the same issue wrt faac.  Apologies for pestering you twice over!


I have a raw PCM audio file. Mplayer reports it as:

- Uncompressed PCM audiop
- 44100 Hz
- 2 ch
- 16 bit (0x10)

It was obtained by running avi2raw on a 10-second clip captured sing ffmpeg at
192 bits/sec. And it plays just fine.

However my best efforts to encode using lame result in 2 - 3 seconds of dense
hiss through mp4player.

Command line:

- lame -h -r vid.pcm vid.mp3


And lame reports:

- Assuming raw pcm input file
- LAME version 3.95
- Using polyphase lowpass  filter, transition band: 17249 Hz - 17782 Hz
- Encoding vid.pcm to vid.mp3
- Encoding as 44.1 kHz 128 kbps j-stereo MPEG-1 Layer III (11x) qval=2
- Frame  |  CPU time/estim | REAL time/estim | play/CPU |ETA
- 51/54 (94%)|0:00/0:00|0:00/0:00|   12.111x|0:00
- average: 128.0 kbpsMS: 54 (100.0%)

- Writing LAME Tag...done
- ReplayGain: -11.8dB


I'm not on the lame mailing list, so please copy any replies to me.

I'll be so grateful for any help. You just might save my masters degree!


Many thanks --

Guy.

- End forwarded message -
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