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README.8hz-mp3
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1998-06-21
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-----------------------------------------------------------README---------------
Mon May 18 01:20:00 MET DST 1998
Contents
What is 8hz-mp3 ?
How to use it.
Known misfeatures.
How to contribute.
Version history.
Disclaimer.
List of Contributors.
-----------------------------------------------------------What is 8hz-mp3 ?----
8hz-mp3 is the name for our MPEG audio encoder,
SoloH's project "MpegEnc" gave us the idea to also have a go at an free encoder,
but with speed as our main goal, so we went at it.
We did it to learn something and have some fun while doing so.
It supports a number of platforms and will be ported to more eventually.
We took the same official ISO source as SoloH did and we poked around in it
for a couple of days. It's free as is his, but we target more platforms.
The result seems not to be too bad (we think).
At this moment this encoder only supports MPEG I layer III.
(but hey, what else would you want to encode anyway ??)
This encoder seems to be reasonably fast and it's totally free...
-----------------------------------------------------------How to use it--------
This program reads windows .wav (RIFF-WAVE-MSPCM) sample-files.
Only 16-Bit samples are supported.
8hz-mp3 encodes a .mp3 file with the same channel mode as the .wav file has.
(either mono or stereo)
| 8hz-mp3 1998 8Hz software
| USAGE : 8hz-mp3 [options] infile outfile
| OPTIONS : -h this help message
| -b bitrate set the bitrate, default 128kbit
| -c set copyright flag, default off
| -o set original flag, default off
Valid samplerates are : 32000, 44100 and 48000Hz
(eg, samples with other samplerates are rejected by the encoder.)
Valid bitrates are : 32,40,48,56,64,80,96,112,128,160,192,224,256 and 320
For example :
| 8hz-mp3 -b 128 -c -o blah.wav blah.mp3
(This will encode the sample blah.wav into blah.mp3, with a bitrate of
128kBit/sec with the 'copyright' and 'original' flags set to 'on')
The copyright and original flags do not add anything to the mp3 file, they
just let you specify the status of the music file.
-----------------------------------------------------------Known misfeatures----
These are the know misfeatures (bugs ?:)
*It is known to crash. (but not often *phew*)
*If you want the best quality, you should go with a Fraunhofer encoder.
These really are the best, by far. Speed or no speed.
Xing-engine based programs are blazing fast, but they cut-off at 16Khz,
so they have way less work to do.
8hz-mp3 is a nice go at something usefull, but quality wise it is under par.
(Quality is on the same level as the other (ISO Source based) free encoder
'MpegEnc' from SoloH: http:www.isafeelin.org/SoloH)
*Some residual debug output will from time to time be printed.
-----------------------------------------------------------How to contribute----
As it will be very exciting (and usefull :) to have the software on all kinds
of machines/OS' and due to the many requests we have decided to put the
source of the next version online, so everybody can port it to the platforms
they desire.
We'd like to 'coordinate' a wider effort to get these ISO sources fast and
better than they are now, many people have already mentioned they'd like to
help. When the sources for v0.2 are available we'll be waiting for all your
patches and updates to use them in the next version.
For more information read the deveopment page at : http://www.8hz.com/mp3/devel/
-----------------------------------------------------------Version History------
version 0.1b
Removed all MPEG Layer I/II support,
Removed all MPEG II support,
Rearranged some routines,
Optimised a little ( at least 40%, for intel based machines ).
version 0.11b (Microsoft windows 95/NT only)
Hacked a simple GUI.
-----------------------------------------------------------Disclaimer-----------
This software is the result of the experimenting we've done with the
original ISO sources, the primary goal of which was for us to learn.
These software programs are available to the user without any
license fee or royalty on an "as is" basis.
We disclaim all warranties and fitness for a particular purpose,
in short "use at your own risk".
In no event we will accept liability for any incidental, punitive,
or consequential damages of any kind whatsoever arising from the
use of this program.
We do not represent or warrant that the programs furnished hereunder
are free of infringement or any third-party patents, copyrights
or trade secrets.
-----------------------------------------------------------List of Contributors-
The performance increase, WAVE support and 'uncluttering' of the code:
8hz-mp3: (general email: 8hz-mp3@8hz.com)
alex@8hz.com (A.R. v. Ballegooy)
goran@8hz.com (G. Dokic)
This is the list of contributors the documentation with the original
ISO sources gives. (These people know their stuff, Respect!)
Bill Aspromonte Shaun Astarabadi R. Bittner Karlheinz Brandenburg
W. Joseph Carter Jack Chang Mike Coleman Johnathan Devine
Ernst Eberlein Dan Ellis Peter Farrett Jean-Georges Fritsch
Vlad Fruchter Hendrik Fuchs Bernhard Grill Amit Gulati
Munsi Haque Chuck Hsiao Toshiyuki Ishino Masahiro Iwadare
Earl Jennings James Johnston Leon v.d. Kerkhof Don Lee
Mike Li Yu-Tang Lin Soren Neilsen Simao F. Campos Neto
Mark Paley Davis Pan Tan Ah Peng Kevin Peterson
Juan Pineda Ernst F. Schroeder Peter Siebert Jens Spille
Sam Stewart Al Tabayoyon Kathy Wang Franz-Otto Witte
Douglas Wong
--------------------------------------------------------------------------------