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Service Hints & Tips |
Document ID: LWIK-3U9GV9 |
TP 770/E/ED - Installing the video capture driver for Windows NT
Applicable to: World-Wide
o Before installing, make sure that you have installed the following software in the computer:
- Video Features Disk IV for Windows NT 4.0 V1.10 or later (click here to download)
- Utility Disk for Windows NT V4.11 or later and close any application that uses this driver (click here to download)
- If you use the earlier version of utility disk and video feature disk such as V1.02 or older version, sometimes system hang when the video capture application shows the captured image on the screen. It is required that you will update the Windows NT 4.0 display driver to version 1.10 or later.
If you have not installed these updated drivers, please get the latest drivers from IBM Web site and install them first.
Installing Video Capture Driver
Before installation, ensure that all applications which use the IBM MPEG-2 device are closed. If you run Media Player, close this application.
To download the latest video capture driver, click here.
1.) Start Windows NT 4.0
2.) Insert the installation diskette in the diskette drive.
3.) Run Start Menu --> Settings --> Control Panel.
4.) Double click the mouse on Multimedia icon in the Control Panel window.
5.) Multimedia Properties window shows up. Click the mouse on Devices button.
6.) Click the mouse on Add button. A window titled Add shows up. It shows a List of Drivers. Select Unlisted or Updated Driver by double clicking the mouse on the entry.
7.) Click the mouse on OK button or hit the Enter key.
8.) Install Driver window shows up. Enter the drive letter, e.g. a:, corresponding to the Floppy Drive containing our installation diskette, in the window.
9.) Click the mouse on OK button or hit the Enter key.
10.) A window titled Add Unlisted or Updated Driver shows up. Select 9397 Video Capture and click the mouse on the OK button or hit the Enter key.
11.) System does some processing to install the driver. It takes a few seconds and the window disappears.
12.) The installation procedure is over...
Known Issues and Helpful Hints:
1.) Windows NT color depth changes will affect the captured data (preview, overlay). The user should close the video capture application before changing color depth, and then restart the application.
2.) The driver has power management support, by being a client of Thinkpad Power Management Port Driver. This requires the user to have installed Utility Disk. In its absence, the driver will not function properly if the hardware changes power states. If the captured image does not appear proper, then the user has to restart the capture application.
3.) Before running a capture application that uses this driver, the user should close any application (for e.g. Media Player) which uses the IBM MPEG-2 driver. Also if a capture application is running, the user should not attempt to start an application which uses the IBM MPEG-2 driver, or any other application which uses the capture driver.
4.) For preview mode, the user is given a choice of image dimensions based on the available space in video memory. For overlay mode, the user can choose from all sizes (40x30 to 640x480).
5.) Following are known problems when using Vidcap32.exe as the capture application:
a) The user sizes the capture display window and sets capture format such that the scrollbars are visible. Then the user sets the scrollbar(s) to any position other than top on vertical scrollbar and left on horizontal, and then resizes the display window or changes the capture format such that scrollbars are no longer visible. The captured image now appears split either vertically or horizontally. This is because Vidcap32.exe continues to inform the driver about the scrollbar(s) settings though they are no longer visible. To fix this, the user has to resize display window or change capture format such that scrollbar(s) are visible again, and then reset the scrollbar(s).
b) The user selects a size for overlay which is greater than the maximum supported for preview. The driver displays a dialog box informing the user that the size selected should not be used for preview. If the user changes to preview mode with the same size, the image displayed could be distorted, and the cursor may be corrupted. To fix this, the user has to select a valid size using the Video Format dialog box. To restore the cursor, the user has to drag to the bottom of the screen. Vidcap32.exe assumes that preview & overlay are both supported for the same sizes. So if the application is in overlay mode, and the user selects preview mode without selecting a valid size, the driver is informed that it should preview to the same size. But since an image of this size cannot be captured in the frame buffer, the captured image looks distorted and the cursor image is also affected. This problem is also present when using Digital Video Producer.
6.) Overlay mode is not supported for the following resolution, color depth & refresh rate combinations.
- 1024 X 768 X 256 colors, 75/87Hz
- 1024 X 768 X 64K colors, 87Hz
- 1280 X 1024 X 256 colors , 60/87Hz
To uninstall the video capture driver, do the following:
1.) Run "Start Menu" --> "Settings" --> "Control Panel".
2.) Double click the mouse on "Multimedia" icon in the "Control Panel" window.
3.) "Multimedia Properties" window shows up. Click the mouse on "Devices" tab. It shows a list of drivers.
4.) Select the '+' next to Media Control Devices in Multimedia devices. "(MCI)IBM MPEG-2 Decoder" shows up under the tree. Select this and click "Remove" button.
5.) Select "Yes" to proceed. MPEG-2 driver will be removed.
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Hint Category |
Enhanced Video, Installation/Removal Procedures | |
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Date Created |
07-05-98 | |
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Last Updated |
05-04-99 | |
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Revision Date |
02-04-2000 | |
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Brand |
IBM ThinkPad | |
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Product Family |
ThinkPad 770, ThinkPad 770E/ED | |
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Machine Type |
9548, 9549 | |
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Model |
Various | |
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