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-
- This archive contains the PMREXX script "Repeat.CMD".
-
- PURPOSE
- =======
- The function of Repeat.CMD is to play a given multimedia file
- a number of times in a row, or to keep playing it continuously.
- For example, you can use it with OS/2's built-in Software Motion Video
- to create a continuously running video clip on your screen.
-
- DIRECTIONS FOR USE
- ==================
- Repeat.CMD must be run as a PMREXX script. That is, you cannot run it
- directly from the command line; you must start PMREXX, passing
- Repeat.CMD as its first argument. For example:
-
- [E:\MMOS2\MOVIES] start pmrexx repeat file=MACAW.AVI
-
- This will start playing the video clip MACAW.AVI. To have it play
- a certain number of times and then stop, use:
-
- [E:\MMOS2\MOVIES] start pmrexx repeat file=MACAW.AVI count=3
-
- To stop the play, close the PMREXX session (NOTE: not just the
- device!) from the Window List. For example, if you gave the
- command in the first example above, you would have two entries
- in the Window List: "The PM/REXX Interface" and "IBM Ultimotion(TM)".
- To stop the video clip, select "The PM/REXX Interface" from the
- Window List, click the right mouse button to get the pop-up menu,
- and choose "Close".
-
- The best way to use Repeat.CMD is to create a Program Reference object.
- If you specify FILE='%*' in the Parameters field, you can
- play any multimedia file by simply dropping it on the Program Reference.
- This archive includes a REXX script, INSTALL.CMD, that installs two such
- Program References on your Desktop. (You can drag these to a more
- appropriate location; e.g. the Movies folder.)
-
- ARGUMENTS TO REPEAT.CMD
- =======================
- Repeat.CMD can take a number of "keyword=value" pairs as arguments.
- The keyword must be one of: FILE, DEV, FROM, TO, TIMEFMT, or COUNT.
- Each keyword may occur at most once on a single command line.
- The keyword is not case sensitive. There may not be any space
- between the keyword and the "=", nor between the "=" and the value.
-
- The meaning of the keywords is:
-
- FILE=filename Play the given multimedia file. If FILE
- is given, and DEV is not given, the file
- is examined to decide which device it should
- be played on.
- If the filename contains spaces, it must
- be enclosed in single or double quotes,
- as in: FILE='file name'.
-
- DEV=device Play the given device.
-
- Either the FILE or the DEV argument (or both)
- must be specified, the other arguments are
- optional.
-
- TIMEFMT=format Specify the time format. Exact values depend
- on the device.
-
- FROM=start Specify the starting position. Exact values
- depend on the device, and presumably on the
- TIMEFMT. On the Software Motion Video device,
- if TIMEFMT is not given, the position is specified
- simply as a frame number (zero being the first frame).
-
- TO=end Specify the ending position. See FROM.
-
- COUNT=count Specify the number of times the play command
- is to be performed. If COUNT is omitted, the
- playing repeats forever (until you stop it
- from the Window List).
-
- ACKNOWLEDGMENTS
- ===============
- This script was created by modifying the example REXX Script, PLAY.CMD,
- included in the MMOS2 directory of the Multimedia PM package.
-
- CAVEATS
- =======
- Repeat.CMD was primarily intended to play Software Motion Video clips.
- It has not been tested with other types of multimedia files.
- It might need slight modifications because, if you do not specify
- the FROM argument, it inserts a "from 1" into the play command;
- depending on the device and the TIMEFMT, that might not be
- appropriate.
-
- The script has been tested with HPFS file names for the FILE argument.
- If you need to use values with spaces in them for the other arguments,
- slight modifications to the MCI commands might again be necessary.
- See the REXX code.
-
- AUTHOR
- ======
- Ari Schot, 29 September 1993
- Internet: delft@fwi.uva.nl
-