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Monster Media 1994 #1
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OS/2 Help File
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1994-03-16
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11KB
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241 lines
ΓòÉΓòÉΓòÉ 1. Help for File ΓòÉΓòÉΓòÉ
Use File to open an MPEG movie.
ΓòÉΓòÉΓòÉ 1.1. Help for Open ΓòÉΓòÉΓòÉ
Use Open to display a window that enables you to choose an MPEG movie.
ΓòÉΓòÉΓòÉ 2. Help for Options ΓòÉΓòÉΓòÉ
Use Options to change the color and size playback style and also to show a
Status box with relevant movie statistics. pieces.
A check mark appears next to your color/size selection when the selection is
active.
ΓòÉΓòÉΓòÉ 2.1. Help for Display Styles ΓòÉΓòÉΓòÉ
Select one of the three display styles below. The default playback style is
Color
ΓòÉΓòÉΓòÉ 2.1.1. Help for Color ΓòÉΓòÉΓòÉ
Use Color to select 128 color playback of the movie.
ΓòÉΓòÉΓòÉ 2.1.2. Help for Gray Scale ΓòÉΓòÉΓòÉ
Use Gray Scale to select 128 shade gray scale playback of the movie. You will
usually see slightly better frame rates than with the Color option above.
Also, some movies have "garish" color and selecting gray scale will make them
more pleasing to the eye.
ΓòÉΓòÉΓòÉ 2.1.3. Help for Double Size ΓòÉΓòÉΓòÉ
Use Double Size to select a double size playback of the movie. You will see
dramatically lower frame rates than with the Color or Gray Scale options above.
Also, the movie will appear very "chunky".
ΓòÉΓòÉΓòÉ 2.2. Help for Loop ΓòÉΓòÉΓòÉ
Use Loop to cause the movie to continuously loop during playback. The only way
to stop it is to click in the movie area with either mouse button.
ΓòÉΓòÉΓòÉ 2.3. Help for Status ΓòÉΓòÉΓòÉ
Use Status to bring up the Status dialog box. This will display the name of
the movie, the size in pixels and real-time statistics on the number of frames
processed (for each of the I, B and P frame types) and the running
frames/second value. Click Cancel at any time to close this dialog box.
ΓòÉΓòÉΓòÉ <hidden> Help for Open ΓòÉΓòÉΓòÉ
Use Open to select an MPEG movie:
1. Select the down arrow to the right of the Drive list to display all the
drives on your system.
2. Select a drive from the Drive list.
3. Select a directory from the Directory list.
4. Select a file name from the File list or type in a file name.
5. Select the Open pushbutton to play the movie you want to view.
For a detailed explanation of each field, select from the list below:
o Open file name
o Type of file
o Drive
o File
o Directory
o Open
o Cancel
ΓòÉΓòÉΓòÉ 3. Keys Help for PMMPEG ΓòÉΓòÉΓòÉ
There is no key specific help for PMMPEG.
To stop the movie in mid-play, click anywhere on the movie with either mouse
button.
ΓòÉΓòÉΓòÉ <hidden> Help for Open Filename ΓòÉΓòÉΓòÉ
Type the name of the movie you want to open in the Open filename field and
select the Open pushbutton.
ΓòÉΓòÉΓòÉ <hidden> Help for Type of File ΓòÉΓòÉΓòÉ
Select the down arrow to the right of the Type of file field to display the
available file types.
ΓòÉΓòÉΓòÉ <hidden> Help for Drive ΓòÉΓòÉΓòÉ
The Drive list displays the drives on your system. Select the drive that
contains the files you want to view.
ΓòÉΓòÉΓòÉ <hidden> Help for File ΓòÉΓòÉΓòÉ
The File list displays all the files in the directory you selected from the
Directory list. Select the file you want to open.
ΓòÉΓòÉΓòÉ <hidden> Help for Directory ΓòÉΓòÉΓòÉ
The Directory list displays the directories on the selected drive. Select a
directory to display the list of files from that directory in the File list
box.
ΓòÉΓòÉΓòÉ <hidden> Help for Open ΓòÉΓòÉΓòÉ
Select Open to accept all information in the window, remove the window from the
screen and view the movie.
ΓòÉΓòÉΓòÉ <hidden> Help for Cancel ΓòÉΓòÉΓòÉ
Select Cancel to remove the window from the screen without viewing a movie.
ΓòÉΓòÉΓòÉ 4. Help for PMMPEG ΓòÉΓòÉΓòÉ
Use PMMPEG to display digital movies conforming to the MPEG specification.
PMMPEG can handle both I-Frame only movies and IBP-Frame movies. It cannot
currently handle MPEG movies with embedded sounds.
Related Information:
o MPEG File Info
o Origin of the Code
o Movie Sites
o Known Bugs
o Author Contact
ΓòÉΓòÉΓòÉ 4.1. MPEG File Info ΓòÉΓòÉΓòÉ
This program 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 player expects MPEG-1 video streams only. It can not handle multiplexed
MPEG streams or video+audio streams. The player uses the paris entropy coding
table set (which we believe to be the MPEG-1 standard), but can not handle any
bitstreams that use the "berlin" entropy coding table set. Berlin data is
relatively rare so there shouldn't be too much to worry about here, but be
aware of the difference when looking for streams to play.
XING is a popular DOS/Windows-based MPEG encoder/player that 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.
ΓòÉΓòÉΓòÉ 4.2. Origin of the Code ΓòÉΓòÉΓòÉ
o Computer Science Division-EECS, Univ. of Calif. at Berkeley. Lawrence A.
Rowe, Ketan Patel, and Brian Smith wrote a Unix and X Windows-based MPEG
decoder and viewer. This program is based on their version 2.0 release.
To get the original source, ftp to toe.cs.berkeley.edu, directory
/pub/multimedia/mpeg/mpeg-2.0.tar.Z.
These folks have set up several mailing lists for their code.
- mpeg-list-dist@CS.Berkeley.EDU
General information on the decoder for everyone interested should be
sent to this list. This should become active after 11/20/92
- mpeg-list-request@CS.Berkeley.EDU
Requests to join or leave the list should be sent to this address. The
subject line should contain the single word ADD or DELETE.
- mpeg-bugs@CS.Berkeley.EDU
Problems, questions, or patches should be sent to this address.
o Tom Lane of the Independent JPEG Group provided the basic inverse DCT code
used by the Berkeley player. (tom_lane@g.gp.cs.cmu.edu)
o I, Mike Brown, ported the Unix/X code to OS/2 and Presenation Manager and
"integerized" the heavy floating point in the inverse DCT routine.
This program and all of the gathered components are in the public domain.
ΓòÉΓòÉΓòÉ 4.3. Movie Sites ΓòÉΓòÉΓòÉ
You can get MPEG movies from computers around the world. The well-known ones I
have found are:
o emx.cc.utexas.edu /pub/mht/mpeg
o s2k-ftp.cs.berkeley.edu /pub/multimedia/mpeg
o havefun.stanford.edu /pub/mpeg
o phoenix.oulu.fi /pub/mpeg
o burrito.raleigh.ibm.com /pub/pics/mpeg
ΓòÉΓòÉΓòÉ 4.4. Known Bugs ΓòÉΓòÉΓòÉ
Some movies have encoding errors. Most of these will be caught and safely
ignored but some will cause the application to suddenly exit or Trap. Work is
ongoing to bulletproof the code against these encoding errors. Please send me
the title and location of any movies that fail.
Movie playback is not real-time. Faster CPU and video cards will help to
improve the situation and internal optimization is ongoing. Use grayscale to
get the fastest playback, at the expense of losing color.
ΓòÉΓòÉΓòÉ 4.5. Author Contact ΓòÉΓòÉΓòÉ
Author name: Mike Brown
You can reach me at mbrown@sescomp.com (or use the syntax required by your
system to send Internet email).
I look forward to reports of new movie sites, new feature requests and of
course bug reports. If you "register" your use, I'll send a broadcast message
as new versions are released.
The official ftp site will be ftp.cdrom.com.
ΓòÉΓòÉΓòÉ <hidden> ΓòÉΓòÉΓòÉ
A symbol that shows that a choice is currently active.