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- MPEG Video Software Decoder
- (Version 2.1; May 1 1995)
-
- Lawrence A. Rowe, Ketan Patel, Brian Smith, Steve Smoot, and Eugene Hung
- Computer Science Division-EECS, Univ. of Calif. at Berkeley
-
- This directory contains a public domain MPEG video software
- decoder. The decoder is implemented as a library that will
- take a video stream and display it in an X window on an 8, 24
- or 32 bit deep display. The main routine is supplied to
- demonstrate the use of the decoder library. Several dithering
- algorithms are supplied based on the Floyd-Steinberg, ordered
- dither, and half-toning algorithms that tradeoff quality and
- performance. Neither the library nor the main routine handle
- real-time synchronization or audio streams.
-
- The decoder implements the standard described in the Committee
- Draft ISO/IEC CD 11172 dated December 6, 1991 which is
- sometimes refered to as "Paris Format." The code has been
- compiled and tested on the following platforms:
-
- HP PA-RISC (HP/UX 9.X, X11R5) (i.e., HP 9000/7XX and 9000/3XX)
- Sun Sparc (SunOS 4.X, Solaris)
- DECstation 5000 and Alpha
- Silicon Graphics Indigo
- MIPS RISC/os 4.51
- Linux
-
- If you decide to port the code to a new architecture, please let
- us know if there are any significant changes, so that we can incorporate
- them into our sources.
-
- This directory contains everything required to build and
- display video. We have included source code, a makefile, an Imakefile,
- installation instructions, and a man page. Data files can
- be obtained from the same ftp site this was located in.
- See the INSTALL file for instructions on how to
- compile and run the decoder.
-
- The data files were produced by XING. XING data does not take
- advantage of P or B frames (ie, frames with motion compensation).
- Performance of the player on XING data is significantly slower
- (half or less) than the performance when motion compensated MPEG
- data is decoded. We are very interested in running the software
- on other MPEG streams. Please contact us if you have a stream
- that does not decode correctly. Also, please send us new streams
- produced by others that do utilize P and B frames.
-
- Our future plans include porting the decoder to run on other
- platforms, integrating it into a video playback system that
- supports real-time synchronization and audio streams, and
- further experiments to improve the performance of the
- decoder. Vendors or other organizations interested in supporting
- this research or discussing other aspects of this project should
- contact Larry Rowe at Rowe@CS.Berkeley.EDU.
-
- Reporting bugs:
- If you find any bugs in this software, please send them to
- mpeg-bugs@plateau.cs.berkeley.edu. Since this software
- is unsupported, we make no guarantees about how long it will
- take to fix the bug, or if it will be fixed at all. Bug fixes
- will be cheerfully accepted. Please include as much detailed
- information as possible, including:
-
- 1) the version number of the program you are using (cf. VERSION)
- 2) the data file that caused the bug (if possible)
- 3) the OS version and machine type you ran the program on
- 4) the compiler used to compile the program
-
- ACKNOWLEDGEMENTS:
- We gratefully thank Hewlett-Packard, Fujitsu, the Semiconductor
- Research Corporation for financial support.
-
- We also want to thank the following people for their help:
-
- Tom Lane of the Independent JPEG Group provided us with
- the basic inverse DCT code used by our player.
- (tom_lane@g.gp.cs.cmu.edu)
-
- Reid Judd of Sun Microsystems provided advice and assistance.
-
- Todd Brunhoff of NVR provided advice and assistance.
-
- Toshihiko Kawai of Sony provided advice and assistance.
-