***************************************************************************
********************** MPEG Player Readme  Version 2.0 ********************
***************************************************************************

This readme file contains late-breaking information on MPEG Player Version
2.0 and other information not covered in the MPEG Player User Guide.

Contents
--------

1.  What's new in v2.0
2.  Installation
3.  Volume control
4.  .INI file settings
5.  Removing the software
6.  Running XING software MPEG and MPEG Player hardware at the same time
7.  Troubleshooting

1. What's new in v2.0
---------------------

-   VESA Media Channel compliant software interface
-   Works with 64-bit GrafixStar range
-   Works with SmartDrive caching of CD-ROM
-   Improved accuracy in seeking, play from/to etc.
-   File load performance improvements
-   Enhanced CD-i support
-   Overall output volume control
 
2. Installation
---------------

Always install the VMC Controller software first for the GrafixStar range.
Install as described in the MPEG Player User Guide.

3. Volume control
-----------------

The Control Panel application, described in your MPEG Player User
Guide, now has an extra slider to set the maximum physical output
volume for MPEG audio.  Note that this setting is separate from the 
logical output volume which can be set by an application using the MCI 
SETAUDIO VOLUME command and effectively sets the range over which the
logical MCI volume operates.

Unless your MPEG audio volume is too high there should be no need to 
change the default (=1000) setting.

4. .INI file settings
---------------------

The VDI.INI file (in the Windows directory) now has a new section entitled

[MPEG Player Tuning]

and has various switches which are described below:

PreRollVideo=1		This controls whether video is "prerolled" when a 
			clip is opened.  Prerolling enables the first frame
			to be displayed but incurs a small overhead in the
			time to open the clip.  Setting this to 0 stops
			prerolling.

EstimateDuration=0	This is another switch which affects the time it
			takes to open an MPEG clip.  By default (ie. value 
			0)the driver behaves the same way as it did in v1.0
			and determines the duration of an MPEG clip by 
			analysing the timestamps both at the beginning and 
			end of the file.  If you set this switch to 1 then 
			the clip duration is estimated, based on the file 
			size and specified bit rate; this significantly 
			speeds up clip opening time but may give a less 
			accurate result.

DurationScale=100	This switch is only relevant when EstimateDuration 
			is set to 1, and allows the estimated duration to 
			be adjusted in cases where the estimate is too 
			short.  The effect of a clip's duration being 
			estimated too short is that its playback will stop
			prematurely.

			The value is expressed in terms of a percentage so 
			a value of 105 will factor the estimated duration 
			up by 5%.  It should not be necessary to use a 
			value greater than 105.

ReloadMicrocode=0	With v1.0 the video decoder's microcode was 
			uploaded every time a new clip was opened, which 
			again increased the opening time for the clip.  
			v2.0 by	default does not reload the microcode and 
			this should never be necessary.  However, if you 
			experience problems then try setting this to 1; if 
			you find this cures a problem then please report 
			this to VideoLogic.
		
AlignStreams=1		It is our experience that certain encoders generate 
			audio/video clips that are out of sync according
			to the timestamps for the audio and video streams.
			By default v1.1 will adjust such MPEG clips on the
			assumption that the audio and video streams start 
			at the same time.  
			If you experience problems with a/v sync then try 
			setting this switch to 0.

WarnEncryptedVideo=1	It is our experience that certain encoders generate 
			audio/video clips that are encrypted and do not 
			conform	to the MPEG 1 standard (ISO/IEC 11172).

			If you try to play an MPEG clip which is encrypted 
			then you will see a warning dialog displayed when 
			you open the clip.  To inhibit the warning dialog 
			set this switch to 0.  For more information about 
			encrypted MPEG files contact VideoLogic.

TimeOut=1000		This value sets a MINIMUM timeout for seek and play
			start-up during which interrupt detection is 
			critical.  If seek and/or play start-up do not 
			appear to be functioning correctly try increasing 
			this value (which is in milliseconds) to see if 
			this improves the driver behaviour.  NOTE that this 
			switch does NOT appear in VDI.INI by default.




5.  Removing the software
-------------------------

Use the Remove button in the Control Panel Drivers list for [MCI] 
VideoLogic MPEG Player 2.0.
Delete this file from the Windows \SYSTEM sub-directory:
	VDIVIC.CPL

Delete these files from the Windows directory only if Captivator Pro (or 
other VMC option card) is NOT installed:
	VDI.INI
	SCANSTAT.INI

Delete these files from the \VLPOWER directory (or wherever you installed 
MPEG Player):
	README.TXT
	VDIVIC.ICO
	MPINST.EXE    	(GrafixStar range only)
	VICISR.DLL
	MPEGMCI.HLP
	CODECDRV.DLL
	VDIVIC.HLP
	MPEGPLYR.DLL
	VLMPGAPI.DRV
	SCANDLG.HLP
	SAMPLE.MPG
Only delete these files if Captivator Pro (or other VMC option card) is NOT
installed:
	VLPPAPI.DLL
	VDIVMC.DLL    	(GrafixStar range only)
	VDI.DLL		(928Movie and PCIMovie only)
	PSTREAM.DRV	(GrafixStar range only)

For GrafixStar cards, run the GrafixStar or VMC Controller Setup in the 
GrafixStar group and select the Remove option provided.  This will give a
choice of modules to be removed so select VMC Controller only.


6.  Running XING software MPEG and MPEG Player hardware at the same time
------------------------------------------------------------------------

If you are a current user of Xing MPEG, and have just upgraded to
hardware MPEG, you will find that although you can access either software
or hardware MPEG playback from the Device menu under Media Player, the 
Xing MPEG Player application no longer displays video.
     
If you do wish to be able to run hardware AND software MPEG, then either 
do so from Media Player, selecting the appropriate driver as required, or
perform the following modifications to your system files:
     
     After installing the MPEG Player software, edit SYSTEM.INI, and go to 
     the [mci] section. There you will see two lines which start with 
     "Mpegvideo" - one, pointing to XMPLAYER (the Xing Player driver), will 
     have a number after the text "Mpegvideo". To make the Xing Player 
     application show software MPEG again, change these lines so that the 
     XMPLAYER line starts
     
         Mpegvideo=
     
     and the other line (pointing to the VideoLogic MPEG Player driver) 
     starts
     
         Mpegvideo1=
     
     This will allow you to use the Xing application, but it will also mean 
     that double-clicking an MPEG file in File Manager, or an icon 
     associated with an MPEG file in Program manager, will start Media 
     Player, and run the software MPEG driver by default. To change this 
     side-effect, edit WIN.INI, and go to the [mci extensions] section.
     
     Change all lines which reference standard MPEG extensions (e.g. .mpg), 
     which currently look like
     
         mpg=Mpegvideo
     
     to say (for example)
     
         mpg=Mpegvideo1
     
     Now double-clicking on an MPEG file will run Media Player, and use 
     the VideoLogic MPEG Player driver by default.
     
The effects of these changes will be seen on restarting Windows.


7.  Troubleshooting
-------------------

My CD-i interactive title won't play:
Most of these, e.g. "Titanic: an interactive exploration", are NOT
digitalvideo (MPEG) and so cannot be played on PC MPEG cards.  They are 
designed for a Philips CD-i player.

I get no video window when I play MPEG movies using the XING Player:
The MPEG Player driver is incompatible with the XING Player application. 
Use Media Player instead.  Also see section 6 above.

My CD-i digitalvideo movie is displayed with the wrong aspect ratio:
Some NTSC titles, e.g. "Star trek - the undiscovered country", are an
unconventional width.  Just stretch the window downwards.

Only the first track on a Video-CD can be played:
Some Video-CDs have the copyright and title information on separate tracks
with the main movie as the last track.  The VideoLogic CD-i driver can only
access track 1.
Use the VideoLogic MPEG Player device in Media Player to access the tracks
as separate files (*.DAT) on the CD drive.

The video window is black when I use a virtual desktop mode:
MPEG Player works fine with the SmartDesktop Zoom facility but cannot work 
in most of the large virtual desktop sizes selected in the Display 
application Edit Mode.
Use a regular display mode instead.
