Danny Amor's Online Library/Danny Amor's Online Library - Volume 1.iso/html/faqs/faq/mpeg-faq/part4

Text File | 1995-07-25 | 39.8 KB | 1,015 lines

Subject: MPEG-FAQ: multimedia compression [4/6]
Newsgroups: comp.graphics,comp.graphics.animation,comp.compression,comp.multimedia,alt.binaries.multimedia,alt.binaries.pictures.utilities,alt.binaries.pictures,alt.binaries.pictures.d,alt.answers,comp.answers,news.answers
From: [e-mail] (Frank Gadegast)
Date: 22 Aug 1994 12:30:14 GMT

Archive-name: mpeg-faq/part4
Last-modified: 1994/08/22
Version: v 3.2 94/08/22
Posting-Frequency: bimonthly


BEGIN -------------------- CUT HERE --------------------- 4/6

 - dithering options: 4x4 ordered dither normal size
                      4x4 ordered dither double size
                      grayscale


2. Overview
===========

VMPEG complements the programs CMPEG (MPEG encoder) and DMPEG (MPEG
decoder and off-line player). It decodes MPEG encoded sequences directly
to the screen at (hopefully) reasonable speed. It is about eight times
faster than DMPEG, up to nearly 50% faster than the latest Xing MPEG player
(mjackson.mpg: XingIt V2.1: 10 frames/s, VMPEG: 14.5 frames/s) and, timed
on a 386DX/33, about 1/3 to 1/2 the speed of the Berkeley MPEG player
(mpeg_play) running on a Sparc10.

VMPEG is compiled with the GNU C compiler (gcc) into '386 code and runs
under the DOS extender GO32 by DJ Delorie which is included in the archive
file. VMPEG cannot be run from Windows or under OS/2.

The eightfold speed improvement over DMPEG was obtained by changing the
C compiler, by using algorithms which take advantage of the 32 bit
architecture of the '386 and by rewriting a few key routines in '386
assembler.

VMPEG is, however, not meant to replace DMPEG (at least not presently),
since it is lacking several of the features of DMPEG (like decoding
to a file, TrueColor display, Floyd-Steinberg dithering etc.) and the
quality of the decoded sequences is a bit lower (about 7 bit accuracy
instead of 8 bit, which is however completely masked by the dithering
noise and the 6 bit color register resolution of VGAs and SVGAs).

Stefan Eckart, [e-mail]


---------------------------------------------------------------------------

CMPEG:  Stefan Eckart's CMPEG, another Freeware MPEG maker!

Here is another MPEG creator!   This one supports 8086+, so if you
thought you couldn't make MPEGs, boy were YOU wrong. :-)   Can make
Xing (I-frame) or normal MPEGs (which contain I, P & B frames, and
offer better compression).   Be full aware of the fact that the
slower your machine, the longer it will take to compress your files
into an MPEG animation (does this need to be said?).  (Don't expect
eyeball-charring performance from your 286, please..)

Due to its small size, I am offering CMPEG here at a2i.  Access info:

---------------------------------------------------------------------------

DMPEG V1.1  Public Domain MPEG decoder by Stefan Eckart  June 1993
==================================================================

1. Features
===========

DMPEG is another MPEG decoder/player for the PC:


 - decodes (nearly) the full MPEG video standard
   (I,P,B frames, frame size up to at least 352x288)
 - can save decoded sequence in 8 or 24bit raw file for
   fast off-line display (two pass mode)
 - optional on-screen display during decoding
 - several dithering options for 8 bit displays:
     ordered dither, Floyd-Steinberg, grayscale
 - selectable color-space
 - runs under DOS, 640KB RAM, no MS-Windows or '386 required
 - compact (small code / small data models, 16 bit arithmetic)
 - supports VGA, many Super-VGAs (including VESA) and
   some TrueColor SVGAs


DMPEG is both an MPEG viewer AND converter.  When viewing, it is important
to note that it is markedly slower than the Xing player.  That is, unless
you CONVERT the MPEG to DMPEG's proprietary RAW format.  You then use a
special player, included, which will show the RAW format animation on VGA,
SVGA, or VESA screens!  And, hey 286 users, this one actually works on
80286 machines (albeit a little slowly).

The converter does a remarkable job, and I use it for the "essential" MPEGs
that I would like to view at the highest speed possible.  If you have the
anim loaded in RAMdisc then you have a really nice framerate even on a
lowly 386!  :)   In the newly released 1.1 version, the converter and
viewer are now included in one executable.

It is important to note that this viewer will allow users to see MPEGs that
the Xing player will not.  This is because DMPEG is programmed to view all
3 frametypes, while Xing's player isn't.  If the MPEG won't view using
Xing, try this player, DMPEG.

---------------------------------------------------------------------------

[ This is the README.DOS file out of the SECMPEG-archive. Read below in ]
[ the UNIX-section for more information about SECMPEG.                  ]

       SECMPEG is a program based on a rather  complex  algorythm
       to  ensure  a  confidentiality and a integrity service for
       the video-stream MPEG-I.


SECMPEG.ZIP (c) 1993 by Frank Gadegast and Juergen Meyer
========================================================

This is my DOS-port of the MPEG-filter called "secmpeg".
Read the provided file README and the man-page first.

It was compiled with Gnu's DOS-port of their GCC-compiler,
called DJGCC Version 2.4.1 and NDMAKE Version 4.5. So please
read the GNU-Licence-file 'LICENCE.GNU'.

You find the DOS executable in this distribution under
'secmpeg.exe'.


NEEDS and INSTALL
-----------------

Cause of DJGCC, the final executable is not running under
DPMI (so not in a Windows-DOS-Box) nor on a 286-machine.

The Gnu-environment-executable 'GO32.EXE' has to be somewhere
in the PATH. If running on a 386, the GNU-387-emulationfile
'EMU387' has to be, where the environment variable GO32 is
pointing to, so if the emu-file is in D:\LIB enter:

set GO32=emu d:/lib/emu387

       Permission to use, copy, modify, and distribute this soft-
       ware and its documentation for any purpose and without fee
       is hereby granted, provided that the archive remains  com-
       plete,  that  this author notice will appear in all copies
       and as long as you don't try to make money off it, or pre-
       tend that you wrote it.

---------------------------------------------------------------------------

[ The first tool to test a MPEG-I-stream ! Including statistics, frame- ]
[ order, decoding times !! Now you can test, if archives are ok or if a ]
[ file uudecoded ok without playing it ! This code is surely based on   ]
[ the berkeley-decoder.                                                 ]


MPEGSTAT.ZIP (c) 1993 by PHADE Software
=======================================

This is my DOS-port of the MPEG-filter called "mpegstat".

It was compiled with Gnu's DOS-port of their GCC-compiler,
called DJGCC Version 2.4.1 and NDMAKE Version 4.5. So please
read the GNU-Licence-file 'LICENCE.GNU'.


WHERE IS IT ?
=============

It will be posted the alt.binaries.pictures.utilities group these days.
Reposts come as requested.

It will stored on our ftp-server in the next days (probably there):

        host: ftp.cs.tu-berlin.de (130.149.17.7)
        file: /pub/msdos/dos/graphics/mpegstat.zip



NEEDS and INSTALL
-----------------

The Gnu-environment-executable 'GO32.EXE' has to be somewhere
in the PATH. If running on a 386, the GNU-387-emulationfile
'EMU387' has to be, where the environment variable GO32 is
pointing to, so if the emu-file is in D:\LIB enter:

set GO32=emu d:/lib/emu387

That should do, Phade ([e-mail])

---------------------------------------------------------------------------

[ Well, and soon as it was out, I ported Berkeley's new MPEG-ecndoder ]
[ to DOS as well, here the README.DOS file. For more information see  ]
[ below in the UNIX-section.                                          ]

ENC11DOS.ZIP (c) 1993 by PHADE Software
=======================================

This is my DOS-port of the MPEG-encoder called "mpeg_encode"
by the Berkeley Research Group.

It was compiled with Gnu's DOS-port of their GCC-compiler,
called DJGCC Version 2.4.1 and NDMAKE Version 4.5. So please
read the GNU-Licence-file 'LICENCE.GNU'.


WHERE IS IT ?
=============

It will be posted the alt.binaries.pictures.utilities group these days.
Reposts come as requested.

It will stored on our ftp-server in the next days (probably there):

        host: ftp.cs.tu-berlin.de (130.149.17.7)
        file: /pub/msdos/dos/graphics/enc11dos.zip


NEEDS and INSTALL
-----------------

The Gnu-environment-executable 'GO32.EXE' has to be somewhere
in the PATH. If running on a 386, the GNU-387-emulationfile
'EMU387' has to be, where the environment variable GO32 is
pointing to, so if the emu-file is in D:\LIB enter:

set GO32=emu d:/lib/emu387


That should do, Phade ([e-mail])

---------------------------------------------------------------------------

[ This is Xing's new Public-Domain-Player. It is enhanced, but still   ]
[ has of bugs. You have to deinstall the old .DLL's and the MCI-driver ]
[ to have it running proper. The DOS-MPEG-Player included in this file ]
[ (named MPEGVIEW.EXE) doesn NOT run with all Soundblaster-compatible  ]
[ cards and kills the machine quit often.                              ]

         XingIt! MPEG Player Software Demo
               (August 27,1993)

The file MPEGVIEW.EXE installs Xing Technology, Inc.'s XingIt! MPEG
Player Software Demo for IBM PC compatibles. Xing's "XingIt!" real-time
video MPEG capture board, including encoding software, video and sound editor,
and the full-featured player is available direct from Xing Technology,
Inc. in Arroyo Grande, CA (See below for order info).

The file MPEGVIEW.EXE is a self extracting archive. To install the player,
create a new directory on your hard drive and copy MPEGVIEW.EXE into it.
Change to that directory and type MPEGVIEW to extract the player files.

MPEGVIEW.EXE also contains a DOS version of the player, MPEG.EXE.
To run the DOS version, change to the directory where you extracted
MPEGVIEW.EXE and type "MPEG MPEGFILENAME.MPG".

---------------------------------------------------------------------------

[ Well, this is just class. The Stanford-Codec is now available for ]
[ DOS-users. The file is usually called PVRGMPEG.ZIP, it supports   ]
[ IPB-Frames and Xing-Format ! Sometimes called MPGCODEC too.       ]

From: [e-mail]
Subject: PVRG MPEG CODEC
Date: 15 Jun 93 20:09:52 +0100

This archive contains the following files:

    README.1ST      This file
    PVRGMPEG.EXE    My port of the PVRG MPEG CODEC
    PPM2CYUV.EXE    My port of the PVRG YUV file splitter
    CYUV2PPM.EXE    My port of the PVRG YUV file combiner
    MAKEMPEG.TXT    Details of how I did the port
    USEMPEG.TXT     Details on using PVRGMPEG
    SHORT.MPG       A XING compatible version of short.mpg supplied
            by PVRG with the source code.
    SHORT*.GIF      The 10 frames in GIF format to make SHORT.MPG

I hope I have not offended anybody by putting this archive together. I offer
no warranty of any description with respect to my porting.

All of the EXE files were compiled by me from Publicly available source code
from the FTP sites listed in MAKEMPEG.TXT.

I would like to thank the PVRG group for writing such an excellent encoder
and for their help in getting at the Alpha release of v1.2 so quickly (I can't
name this person as the PVRG copyright notice forbids it). Also I would like
to thank Jelle van Zeijl for sending me the XING patch originally written by
Mats Loftvist which has subsequently been included the Alpha release of v1.2.

Have fun and please mail me to let me know how you get on. A copy of any
interesting movies would be appreciated.

This is the MAKEMPEG.TXT file from pvrgmpeg.zip it may help you port the PVRG
MPEG CODEC to your platform.

Hi All you Eager MPEG Makers, here is how to port the PVRG MPEG
encoder/decoder to DOS/PC (386).

Tools required:
    Well the ones that I used.

        GNU C version 2.2.2
        An uncompress util for UNIX .Z files
        An untar util for UNIX tar files
        Text Editor (sorry some code needs tweaked)
        Note: Diff from the GNU File utilities, could be used instead
Source required:
        1)
        /pub/mpeg/MPEGv1.2.alpha.tar.Z
            from havefun.stanford.edu

        /pub/mpeg/MPEGDOCv1.1.tar.Z
            from havefun.stanford.edu
            documentation still to be updated.

    2)      The DOS port of PPM2CYUV called ppm2cyuv.exe
    3)      Image Alchemy from a number of ftp sites.
            eg /mirrors4/garbo.uwasa.fi/graphics/alch16.zip
                at wuarchive.wustl.edu

Image Alchemy may be replaced with giftoppm.exe from the pbmplus set of
graphics tools.

Graham Logan
June 15th 1993
[e-mail]


---------------------------------------------------------------------------
 III.2 | WINDOWS
----------------

[ Usally called MPGAUDIO.ZIP ]

Now there is the MPEG AUdio Player for Win3.1 !

This program is Shareware. To encode your own MPEG Audio files, you need
to buy the MPEG AUdio Software Encoder program for Win3.1 .

[ Look above. ]


---------------------------------------------------------------------------
 III.3 | WINDOWS-NT
-------------------

[ This new version of it, is running now extremly nice, the subsystem ]
[ is no harm at all. The file should be known as MPEGW32E.ZIP.        ]

From: [e-mail] (Michael Simmons  - division)
Subject: MPEGPLAY for WINDOWS and NT Now has VCR like Controls
Date: 8 Dec 1993 01:37:36 GMT

It is also available via ftp from decel.ecel.uwa.edu.au as
/users/michael/mpegw32e.zip

MPEGPLAY V1.50 (c) 1993 Michael Simmons

This is Release Version 1.50 of my port of the Berkeley mpeg player.

I have redesigned the interface.

Some of the new features are:
(1) Push button VCR like controls.
(2) A Seperate Video Window.
(3) Automaticaly Displays the 1st frame of the MPEG.
(4) Redraws the current frame when needed.
(5) Displays MPEG File Name, Image Dimensions and File Size in Video Caption
(6) Saves all Player window positions correctly when exiting.

Please Email me with any suggestions you may have on improving the player!

This player can play standard mpeg files that include P and B frame
encoding, and large 354x288 movie files.
It has several display options including mono, gray scale, color dither and
Full color (for Hicolor graphic cards).

This program is SHAREWARE Please read the About box and Help file for
information on registering your copy. The registered version does not
display the About box at startup. It also handles files bigger than 1MB.

To install the player under Windows 3.1(tm), Unzip the file disk1.zip
to a floppy disk. Then run the setup.exe file via the Progman File-Run Menu
Item. Note: You will need to install the Win32s extensions to Windows 3.1
inorder to run this player. Should you wish to remove these extensions
please refer to the section near the end of this Readme.txt file.
Then follow the instructions for running the player under windows NT.

To install the player under Windows NT(tm) copy the files mpegplay.exe and
mpegplay.hlp to a common directory. Then create a new program item for the
mpegplay.exe file via the File New option of the Program Manager.

Read the Disclaimer in the online Help before loading any mpeg movie files.


The lastest version of this software can be found first on decel.ecel.uwa.edu.au
in the users/michael directory


DISTRIBUTION:

This File must not be separated from the rest of this archive.

Due to licensing conditions of the WIN32s(tm) System this archive can only be
Redistributed in the following ways:
(1) Archive site to End user.
(2) Archive site to Archive site.
The following means of redistribution are not permitted:
(1) End user to End user.
(2) End user to Archive site.

Redistribution from Archive site to Archive site may only be performed by
the operators of those sites.
An Archive site is taken to be any large collection of software which is
operated by a person or group of persons for the primary purpose of
redistributing that software.
An End user is taken to be the person or group of persons who use this
software.

Known Bugs:
(1) The Mono Dither is not working properly.
(2) The 2x2 Colour Dither has patches of incorrect colour.
(3) Bug/feature The Player runs slow when ever the mouse is moving.
(4) Will still give Exception errors but this is much rarer.

Changes V1.0 -> V1.2
(1) Re complied using the latest (March) WIN32 Beta.
(2) Includes the latest (March) Win32s windows 3.1 extension.
(3) Fix bug in finding help file. The working directory can now be different
    to the Command Line directory.
(4) Increase number of clicks at startup to 4
    (I have only received one registration!!)

Changes V1.2 -> 1.25
(1) Major rewrite of source code to cleanup bugs
(2) Now saves options in a .ini file
(3) Can split a multi stream MPEG into separate files.
(4) Loop is now a separate option
(5) Can be set to skip over B and P frames ( best to stop and rewind player 1st)
(6) Decrease the number of About Box clicks to one
(7) Can started via the file manager (associate .mpg with the player)
(7b) Also startable from other applications i.e. NCSA Mosaic.
(8) Recompiled with the release version of the Visual C++ for NT compiler
(9) includes the Win32s version 1.1 files
(10) Can change InputBufferSize in .ini file (i.e. InputBufferSize=80000)
(11) Don't have to Close MPEG before OPEN ing
(12) MPEG images are properly clipped when they are displayed
(13) Hopefully no one will have any display problems now (try Use Small DIBS)

Changes V1.25 -> V1.30
(1) Increased speed 10-20% (mainly P B frames and gray,Full/Hi Color dither).
(2) Fixed bug, old mpegs causing exceptions (bus.mpg,flower.mpg,flowb.mpg etc).
(3) Decreased the memory usage.
(4) Added HiColor Dither (Uses 16 Bit DIBS,These are not supported by many
    drivers yet, NT emulates support in the GDI).
(5) Dropped Fs2 and Fs4 dither (use Fs2Fast)

Changes V1.30 -> V1.50
(1) Added Push button, VCR like controls.
(2) Now has a Seperate Video Window.
(3) Automaticaly Displays the 1st frame of the MPEG.
(4) Redraws the current frame when needed.
(5) Displays MPEG File Name, Image Dimensions and File Size in Video Caption
(6) Saves all window positions correctly when exiting.
(7) Detects when saved windows position is off the screen.
(8) Added Experimental Set+Blt Mode for transfering images to the screen.


ACKNOWLEDGMENTS:

This code was derived from the U.C. Berkeley MPEG Player (version 2.0)
developed by L.A. Rowe, K. Patel, and B. Smith ([e-mail]).
That code included the following copyright:

/*
 * Copyright (c) 1992 The Regents of the University of California.
 * All rights reserved.
 *
 * Permission to use, copy, modify, and distribute this software and its
 * documentation for any purpose, without fee, and without written agreement is
 * hereby granted, provided that the above copyright notice and the following
 * two paragraphs appear in all copies of this software.
 *
 * IN NO EVENT SHALL THE UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY PARTY FOR
 * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT
 * OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF THE UNIVERSITY OF
 * CALIFORNIA HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * THE UNIVERSITY OF CALIFORNIA SPECIFICALLY DISCLAIMS ANY WARRANTIES,
 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANT ABILITY
 * AND FITNESS FOR A PARTICULAR PURPOSE.  THE SOFTWARE PROVIDED HEREUNDER IS
 * ON AN "AS IS" BASIS, AND THE UNIVERSITY OF CALIFORNIA HAS NO OBLIGATION TO
 * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
 */
/*

OTHER ACKNOWLEDGMENTS:
Frank Gadegast (the MPEG FAQ Maintainer) for his help full suggestions.

HOW TO REMOVE THE WIN32s EXTENSIONS to WINDOWS

(1) exit to DOS.
(2) backup your hard disk.
(3) delete the Win32s directory and all its files.
(4) edit the system.ini file in the window directory.
    and remove the line device=C:\WINDOWS\SYSTEM\WIN32S\W32S.386
(5) return to windows
(6) remove the Win32 Applications Progman group

Windows NT, Win32s, Windows 3.1 are trademarks of the Microsoft Corporation.

Michael Simmons B.E.E.               The Department of Management
Computer Officer                   University of Western Australia
Phone: (w)[phone]          Stirling Highway Nedlands WA 6009
Phone: (h)[phone]                      Australia
Fax:      [phone]           Email: [e-mail]

---------------------------------------------------------------------------
 III.4 | OS/2
-------------

[ Read the RETRIEVED-MAIL-section for more infos ! ]

mp.lha               gfx/show    45K  83 MPEG player for EHB display.


---------------------------------------------------------------------------
 III.5 | X-WINDOWS and UNIX
---------------------------

[ Here it is !! The first, fully-featured MPEG-player with X11-interface. ]
[ XPLAY exists currently in Version 1.0, patches are available. The next  ]
[ Version 1.1 is currently in development. Thats the announcement !       ]


            XMPLAY [Version 1.1] - Sun Apr 10 14:51:22 MDT 1994

      This distribution is the result of a project worked out at the
      Technical University (TU) Berlin, held in Winter 93/94 by
      Tom Pfeifer. The basic idea is created by Frank Gadegast,
      the programing work was then done by Juergen Meyer, Metin
      Cetinkaya and Frank Gadegast.

This software is ftp-able from:

        host: ftp.cs.tu-berlin.de (130.149.17.7) or
              quepasa.cs.tu-berlin.de
        file: /pub/incoming/xmplay-1.0.tar.gz
        file: /pub/incoming xmplay-1.0.patch.tar.gz

[ Just to remember .gz means, its compressed using GNU's zip, called ]
[ gzip. Use gunzip to uncompress.                                    ]


XMPLAY [Version 1.1]

XMPLAY is a very nice directory-browser under X11 to use XMPEG,
the interactive X11-MPEG-player.

MPEG is a video-format described by the ISO-standard ISO CD11172.
This implementation here can handle MPEG-stream written down
at the MPEG-group-meeting in Paris '92. It can handle IPB-frames
but no system- nor audio-information.

Additional you get a little utility called MPEGINFO, showing you, if called
with the filename of a MPEG-file the most important parameter it can read
dirrectly from its header, like size, picture rate or frame-style.

It should work under nearly every system, 'cause it's programed without
MOTIF, the X11-Toolit or other stupid things, that are always causing
problems. It only needs the X11-library, no matter if you're using
Release 3, 4 or Release 5.

In addition it has lots of defines to let it run under BSD, SYSV, ISC,
Solaris, SunOS, A/UX, SCO or XENIX and you don't have to hack a difficult
Imake- or Makefile and you will not have trouble with build-in pathnames !!!

It's specially made for those systems, that don't have super hardware
or that have problems with the Toolkit or MOTIF.


XMPEG [Version 1.1]
===================

XMPEG is a MPEG-video-player based on the MPEG-widget-implementation
from Jim Frost and the MPEG-movie-player "mpeg_play" from the Portable
Video Research Group at Berkeley.

It just adds a few buttons and is normally getting called
from XMPLAY, but can be used as stand-alone to include into other
programs. Its programmed with the same methods than XMPLAY.


You can ftp XMPLAYe from 'quepasa.cs.tu-berlin.de' from the
directory '/pub/msdos/incoming'.


If you get problems (not really possible) to compile it or if you have
comments send them to the authors, reachable at:

    [e-mail] (responsible for compiling and X11)
    [e-mail] (responsible for the mpeg-code) or
    [e-mail]


---------------------------------------------------------------------------

[ And here the otehr BIG sensation: We have MPEG-I-audio-source-code. ]
[ From the ISO somebody organized the example encoder/decoder-source. ]
[ And from the TU-Berlin, there is Tobias "Doping" Badings' free      ]
[ implementation of an C++ decoder. Thats a BIG step forward, yeh ?   ]
[ And theres even more ...                                            ]

---------------------------------------------------------------------------

[ You can find this under the name MPEGAUDI or ftp it from the IUMA-  ]
[ server sunsite.unc.edu in pub/electronic-publications/IUMA. For a   ]
[ further description of IUMA look into the WHERE-INFOS section.      ]

Last updated 1/5/94

The good news is that source is now available. Look in /IUMA/mpeg_players
for the file mpegaudio.tar.Z

We will continue to gather source and executables and hope that some
enterprising shareware authors or academics will provide various platforms
with real-time players. According to Jared V Boone below, the Xing
real-time player for Windows plays only the lower half of each subband of
only one of the two channels. By my ears, that's pretty good.

Another worthy undertaking would be porting the source to the DSPs
increasingly being found on motherboards and add-in cards, such as the Mac
AV series' AT&T 3210 or the Turtle Beach MultiSound's Motorola 56001, for
real-time full-quality encoding and playback.

That would be cool. =)

-IUMA staff

Here's the latest word on other non-commercial MPEG audio players for Unix
workstations.

I found this in a zip file, the test suite missing, as well as the Makefile.

I hacked together a quick makefile, and altered the musicout code so that if
the destination filename is "stdout" it writes the song to stdout so you can
pipeline it into sox then into /dev/audio or your equivilant.  (Handling
30 meg files takes mucho diskspace I dont have :)

Basically, all you need to do is run it in a pipeline:

decode snd.mp2 stdout | sox [your favorite opts] > /dev/audio (or equiv)

>Some of those favorite opts:
>sox -t .raw -r 44100 -s -w -c 2 file.mp2.dec -t .au -r 8000 file1.au
>sox -t .au -c 2 -w -s file1.au -t .au -c 1 -b -u file2.au avg

I have both encoded and decoded with this.  I decoded a song off the IUMA
archives, and encoded a topgun soundtrack I digitzed myself.  One thing to
note, at the default encoding bitrate of 384 bits, things dont compress hardly
at all, you'll want to input something like 128 bits, which does on average
8-10:x1 compression.

Encoding takes a *LONG* time... :)

-Crh
    Charles Henrich Michigan State University [e-mail]
                     http://rs560.msu.edu/~henrich/

---------------------------------------------------------------------------

From: "Tobias 'Doping' Bading" <[e-mail]>
Subject: Re: MPEGFAQ31: call for papers
Date: Wed, 4 May 1994 17:49:12 +0200 (MET DST)

MPEG Audio Player maplay
------------------------

Features of the actual version 1.1:
 - realtime playing of layer I/II MPEG audio streams on SPARC 10 machines with
   the dbri device and on Indigo audio ports with 16 bit and 32, 44.1 or 48 kHz
 - support of all modes (single channel, stereo, joint stereo and dual channel)
   and bitrates (except free mode currently)
 - decoding of streams to stdout into a raw pcm format for further format
   conversions to .au, .wav etc
 - free-ware
 - written in C++ using the GNU C++ compiler version >= 2.5.1
 - already tested on
     Sun SPARCs with SunOS 4.1.3 or Solaris 2.3,
     Silicon Graphics Indigos with IRIX IRIX 4.0.5F,
     DECstations with ULTRIX 4.2

Promised enhancements for the next version:
 - increased decoding efficiency
 - support for /dev/dsp under Linux
 - 8 kHz u-law support for SPARC 1 and 2 (but without CD-quality ;-)
 - ???

You can find the sources of the actual version on the Internet Underground
Music Archive (IUMA) ftp server sunsite.unc.edu (198.86.40.81) in
/pub/electronic-publications/IUMA/audio_utils/mpeg_players/Workstations

New versions, patches etc will be posted to alt.binaries.multimedia and will
find their way to the IUMA.
Announcements will be made in alt.binaries.multimedia, comp.multimedia,
alt.comp.compression, comp.compression, alt.binaries.sounds.misc and
de.alt.binaries.sounds.d. Persons who already contacted me with new ideas,
comments, adjustments, problems etc will be informed via email, too.

Enjoy the sound,
                 Tobias Bading   ([e-mail])

---------------------------------------------------------------------------

Date: Sun, 2 Jan 1994 22:57:48 -0800
From: Jared V Boone <[e-mail]>
Subject: MPEG decoder...

I have an MPEG decoder that I can make available.  It is in C and I have
succeeded in compiling it under Windows NT Visual C++ and NetBSD 0.9 with GNU
 V2.4.  The code is rather rough, only decodes Layer II, and is rather
slow.  However, I figure if I release the code to the public, some rocket
scientist can make it ran fast...  My only conditions are that I am acknowleged
and notified when someone uses the code in a freeware/shareware/commercial
product.  Let me know if you're interested.

    - Jared Boone, Oregon State University
      ([e-mail])

P.S.  I'm also working on an encoder.  It appears that Xing's encoder is not
all that great (sound quality), and also does not conform to the MPEG-I spec.
If you'd like, I can keep you posted on this as well...

---------------------------------------------------------------------------

[ Well, have a look with archie to find MPEGTOOL ]

MPEGTool is an application which combines  MPEGTool  encoder  and
MPEGTool statistics with X11/Motif based Graphical User Interface
(GUI). MPEGTool encoder is an MPEG-1 encoder for RGB and CCIR-601
format  input video sequences. MPEGTool statistics is a graphical
statistics tool which can be used to analyze the statistical pro-
perties of the encoding process. MPEGTool allows a user to speci-
fy several of the MPEG parameters such as the intraframe  to  in-
terframe ratio, and the quantizer scale through its GUI.

MPEGTool has been tested on Sun SparcStation and HP9000  current-
ly.   To  compile  under  these  machines,  see  instructions  in
Makefile.

GUI of MPEGTool is based on Motif toolkit from the Open  Software
Foundation  (OSF),  so  Motif (Xm) libraries as well as X Toolkit
(Xt)  libraries  and  Xlib  are  required  to  compile  MPEGTool.
Although  MPEGTool can be executed under several window managers,
Motif window manager (mwm) is recommended. We've tested mwm, Open
look  window  manager  (olwm), Tab window manager (twm). With the
twm, we recommend to  put  'DecorateTransients'  in  your  .twmrc
file.

MPEGTool supports disk and tape device for video data  input  and
MPEG  code  output. Also, MPEGTool creates statistics data on the
disk. Statistics data requires around 1/350  to  1/250  of  video
data  size  and  MPEG  code requires 1/10 to 1/5 depending on the
parameter.

MPEGTool encoder encodes RGB/CCIR-601  format  video  input  data
from  tape  or  disk device by MPEG-1 specification and write the
encoded data into tape or disk. In addition, the statistics  data
can be stored into disk device for MPEGTool statistics analysis.

We can set several encoding parameters from MPEGTool Encoder win-
dow.  For setting device related parameters, click Configure but-
ton and modifying parameters in  MPEGTool  Encoder  Configuration
window. To start Encoding, click Start and MPEGTool begins encode
if there is no parameter error or device related error.

MPEGTool statistics creates types of graphs to analyze  statisti-
cal properties of MPEG encoded video stream. Four types of graphs
can be selected, Distribution, Generation Record, Autocorrelation
and  Interarrival Time. First three of these plot each statistics
of   MPEG   code   in   five   levels,   Bit/Frame,    Bit/Slice,
Bit/MacroBlock,  ATM/Frame and ATM/Slice. Interarrival Time plots
the time elapsed between arrivals of ATM packets within a  frame.
The interarrival times are calculated from the bits generated per
macroblock within a frame.  This interarrival time is  normalized
to units of X seconds (where X will depend on the hardware imple-
mentation of the coder).

"MPEGTool: An X windows  based  MPEG   encoder   and   statistics
tool", Proceedings of ACM Multimedia '93, Anaheim, CA

This paper contains  more  details  and  several  examples  about
MPEGTool.   PostScript  file of this paper is placed on anonymous
ftp on atum.ee.upenn.edu.

---------------------------------------------------------------------------

  What is "SECMPEG" ?
  ===================

  SECMPEG is first a newly defined stream, that ensures the service
  of confidentiality and integrity for a MPEG-I-video-stream. 'Cause
  of the amount of multimedia-data it is NOT possible to use the same
  crypto- or checking-techniques for multimedia-data then for normal
  files or streams.

  Therefore we defined a new stream, containing additional security
  information. We tested and filtered the MPEG-I-stream to ensure that
  only important and relevant data is encrypted or checked. The newly
  desinged methods are not proofed but quite good tested. We can't be
  sure so far, if these method really do what they are designed for.

  It is second a tool, that can insert and delete the confidentiality
  and integrity data into/from a MPEG-I-stream.

  If you get any results to proof our methods, we hope to here from you !

  More information is available from te authors, like some PostScript-
  files, pictures and graphs.


  Where is it ?
  =============

  It will be posted the alt.binaries.pictures.utilities and the security-
  relevant groups these days. Reposts come as requested.

  It will stored on our ftp-server in the next days (probably there):

        host: ftp.cs.tu-berlin.de (130.149.17.7)
        file: /pub/msdos/dos/graphics/secmpeg.zip

  or probably in the unix-directory somewhere.


  How does it compile ?
  =====================

  The program already compiles under

  - SunOS 4.1.x            using cc or gcc
  - SunOS 5.0              using cc or gcc
  - Solaris 2.1            using cc or gcc
  - INTERACTIVE Unix 2.2.1 using cc or gcc
  - Linux                  using gcc
  - MS-DOS                 using gcc or Borland C 2.0 (tcc),
                           the dos-port shoulb be included as
                           executable in the archive

  You need a compiler, that understands ANSI-C so far, but the rest is
  straight forward C, so it should compile nearly everywhere.


  What can you do ?
  =================

  Permission to use, copy, modify, and distribute this software and
  its documentation for any purpose and without fee is hereby granted,
  provided that the archive remains complete, that this author notice
  will appear in all copies and as long as you don't try to make money
  off it, or pretend that you wrote it.


  Authors
  =======

  Juergen Meyer                Frank Gadegast
  Sonnenallee 50               Leibnizstr. 30
  12045 Berlin GERMANY         10625 Berlin GERMANY

  Access: [e-mail]   Access: [e-mail]

---------------------------------------------------------------------------

Tom Pfeifer ([e-mail]) announces:

[ mpegstat.tar.Z was uploaded to mm-ftp.cs.berkeley.edu, the DOS-port ]
[ is available on ftp.cs.tu-berlin.de                                 ]

This is mpegstat v1.0 - an analyzing took for MPEG-I video streams for Unix.
It is based on the Berkeley MPEG player v2.0, utilizing the Berkeley parsing
and decoding routines for the MPEG data stream.


MPEGSTAT is  a  useful utility for analyzing MPEG-I video
streams. It is based on the Berkeley  MPEG  movie  player.
MPEGSTAT reads  a  video  stream from a file or stdin and
shows the frame type pattern as it is found while parsing.
After  the  stream  is  completely  parsed it displays the
frame pattern as it would be displayed by a  MPEG  viewer.
It then generates a summary of various mpeg format related
statistics.  MPEGSTAT works for MPEG movies that are Paris
format compatible.


Authors
=======

Multimedia  systems  project - Technical University of Berlin, Germany

Tom   Pfeifer,   Dept.   of    Computer    Science, [e-mail]

Jens  Brettin - Alexander Schulze - Harald Masche - Dirk Schubert

/*
 *
 * Copyright (c) 1993 Technical University of Berlin, Germany
 *
 * for the parts of the Berkeley player used:
 *
 * Copyright (c) 1992 The Regents of the University of California.
 * All rights reserved.
 *
 */

---------------------------------------------------------------------------

[ This brand-new encoder is really nice. Supports parralell computation ! ]
[ There is also a really nice TKTCL-X11-Interface included !!!            ]

[ I already ported this to DOS (surely without the parallel stuff.        ]

From: Larry Rowe <[e-mail]>
Date: Fri, 30 Jul 1993 17:15:56 -0700
Subject: MPEG Video Encoder Release


The Berkeley Plateau Research Group is happy to announce the
release of Version 1.0 of its MPEG video encoder.
The encoder is available via anonymous ftp from mm-ftp.cs.berkeley.edu
(128.32.149.157) in /pub/multimedia/mpeg/mpeg_encode-1.0.tar.Z.
That directory includes a sample uncompressed video sequence
(flower.tar), our software MPEG video player, and some MPEG movies.
    Larry and Kevin

Below is a copy of the README file:
------------------------------------------

                 MPEG-1 Video Software Encoder
                 (Version 1.0; July 30, 1993)

     Lawrence A. Rowe, Kevin Gong, Ketan Patel, and Dan Wallach
    Computer Science Division-EECS, Univ. of Calif. at Berkeley

This directory contains the freely distributed Berkeley MPEG-1 Video
Encoder.  The decoder implements the standard described in the ISO/IEC
International Standard 11172-2.  The code has been compiled and tested
on the following platforms:

 HP PA-RISC (HP/UX 8.X, X11R4) (i.e., HP 9000/7XX and 9000/3XX)
 Sun Sparc (SunOS 4.X, X11R5)
 DECstation 5000 and Alpha

If you decide to port the code to a new architecture, please let
us know so that we can incorporate the changes into our sources.

This directory contains everything required to build the encoder
and run it.  We have included source code, makefiles, binaries
for selected platforms, documentation, and test data.  Installation
instructions are given in the file named src/INSTALL.  A man
page is given in the file doc/mpeg_encode.1.

The encoder will accept any input file format as long as you provide
a script to convert the images to PPM or YUV format.  Input file
processing is described in the file doc/INPUT.FORMAT.  Options to control
input file processing and compression parameters are specified in
a parameter file.  Very little error processing is done when reading
this file.  We suggest you start with the sample parameter file
examples/template.param and modify it.  See also examples/default.param.

We have also provided a Tcl/Tk script, named encode.tcl, that can
be used to set parameters interactively (see the misc/ directory).
The misc/ directory contains utility you might find useful including:
programs to do PPM/YUV conversion and programs to convert Parallax
XVideo JPEG files into PPM or YUV frames.

The motion vector search window can be specified, including half-pixel
block matching, in the parameter file.  We have implemented several
search algorithms for P-frames including: 1) exhaustive search,
2) subsampled search, and 3) logarithmic search.  We have also implemented
several alternatives for B-frame block matching including: 1) interpolate
best forward and best backward block, 2) find backward block for best
forward or vice-versa (called CROSS2), and 3) exhaustive cross product
(i.e., go out for coffee and a donut!). The search algorithms are controlled
by options in the parameters file.  For tips on choosing the right search
technique, see doc/TIPS.

We have done some tuning to produce a reasonable encoder, but there are
many more optimizations that we would like to incorporate.  These
extensions are listed in the file EXTENSIONS.  If you succeed in
implementing any of them, please let us know! We have established
several mailing lists for messages about the Berkeley MPEG work:

[e-mail]
   General information on the MPEG-1 decoder and encoder for
   everyone interested should be sent to this list.

[e-mail]
   Requests to join or leave the list should be sent to this
   address. The subject line should contain the single word
   ADD or DELETE.

[e-mail]
   Problems, questions, or patches should be sent to this address.

Our future plans include porting the encoder to run on other
platforms and completing a portable parallel version of the code
that will run on a network of workstations.  Vendors or other
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