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- #
- | README file for
- |
- | ELSA Videosoftware for Windows 95
- |
- |
- | Copyright (c) 1996-97 ELSA AG, Aachen (Germany)
- |
- | ELSA AG Internet : http://www.elsa.de
- | Sonnenweg 11 LocalWeb : +49-(0)241-938800
- | D-52070 Aachen
- |
- | ELSA Inc. Internet : http://www.elsa.com
- | 2231 Calle De Luna
- | Santa Clara, CA 95054
- | USA
- |
- | ELSA Asia Inc. Internet : http://www.elsa.com
- | 7F-11, No. 188, Sec. 5
- | Nanking East Road
- | Taipei 105
- | Taiwan, R. O. C.
- |
- | ELSA Japan Inc. Internet : http://www.elsa.com
- | Mita Suzuki Building 3F
- | 5-20-14 Shiba, Minato-ku,
- | Tokyo, Japan 108-0014
- |
- | 12.05.98 CSkopinski
-
- Table of Contents
-
- 1. Overview
- 2. Installation
- 3. Videoviewer
- 4. Recording Videos
- 5. Notes
-
- ----------------------------------------------------------------------
-
- 1. Overview
-
- This file describes the installation and handling of
- ELSA Videosoftware.
-
- The Videosoftware consists of:
-
- - Video for Windows Capture Driver.
- - Software for previewing video.
- - Software for viewing teletext.
- - Software for selecting video-input
- and -format.
-
- All videocomponents are started from the WINman suite.
-
- The Videosoftware requires DirectX 5.
-
- The Teletextsoftware requires a PAL and WST (World Standard
- Teletext) compliant videosignal.
-
- ----------------------------------------------------------------------
-
- 2. Installation
-
- Use the CD∩s Setup.exe to install the Videosoftware
-
- ----------------------------------------------------------------------
-
- 3. Videoviewer
-
-
- After starting Videoviewer searches all video-inputs for
- a connected video-source. It stops and shows, if an active
- video-source is found.
-
- If you like to select another source, use menuitem "Video
- Source" described later.
-
- This Videoviewer is handled clicking the left or right mouse-
- key.
-
- When clicking the left mousekey, the windows systemmenu
- appears.
-
- When clicking the right mosuekey, a specific context-menu
- appears.
-
- 3.1 Functions
-
- 3.1.1 Teletext...
-
- Selecting this menuitem starts the Teletextviewer.
-
- 3.1.2 Videosource...
-
- Selecting this menuitem opens a dialog, where you can
- select a video-source or correct the video-colors.
-
- 3.1.3 Videoformat...
-
- Selecting this menuitem opens a dialog, where you can
- select the size of the video and a video-format.
-
- 3.1.4 Screenshot
-
- Saves a BMP-File of the current picture into the temporary
- file directory ( e.g. C:\TEMP ) of your harddisc. The file
- is named SCRNxxxx.BMP. xxxx is a number, which is
- automatically incremented to preserve the file from being
- overwritten when making a series of screenshots.
- Alternatively you may use the 'S' hot key for saving
- instead of the menu.
-
- 3.1.5 Always on top
-
- Selecting this item keeps the Videoviewer window always
- on top of all other windows. Its always visible.
-
- 3.1.6 Hide Titlebar
-
- Selecting this menuitem hides the Videoviewers titlebar.
-
- 3.1.7 Resize to input
-
- Selecting this menuitem resizes the window to the actual
- video input size. "Videoformat" allows selection
- of video input size.
-
- 3.1.8 About...
- About ELSA...
-
- Selecting this menuitem shows information about the program
- and ELSA.
-
- 3.1.9 Exit
-
- Quits the Videoviewer.
-
- ------------------------------------------------------------------------
-
- 4 Recording Videos
-
-
- The programme MainActor is included for video recording.
- However, any "Video for Windows"-compatible software can be
- used for recording videos.
-
- Large amounts of data are created during video recordings.
- The following tips may help you to achieve a drop-free
- recording:
-
- - Close all other programmes and especially DOS boxes during
- video recording.
-
- - Defragment the hard disk before recording.
-
- - Use a separate hard disk for recording.
-
- - Use the ELSA Video Compression.
-
- - Deactivate the audio recording function if you do not wish
- to record sound.
-
- 4.1 Data formats
-
- You can record videos using various data formats. You can
- determine which data format you wish to use in the dialogue
- "video format", which can be called up using the WINman Suite
- or out of your video application. You can choose from the
- following data formats:
-
- - RGB16: The data format RGB16 works in the RGB colour space.
- 5 bits/pixel are stored for each of the three colour
- components.
- In addition one filler bit per pixel is stored, which
- results in a storing capacity of 16bits/pixel.
- The colour resolution of such a picture is equivalent to a
- Real-Colour-Picture under Windows.
- The advantage of RGB16 is that this format is directly
- recognised by Windows. The disadvantage is an extremely
- high storage requirement.
- A picture with a resolution of 320x240 pixels occupies
- 150kB. A picture with 640x480 pixels requires four times
- the amount of data, i.e.600kB.
-
- - YVU9 requires less storage room. namely 9 bits/pixel.
- It works in the YUV colour space and offers 256 grey
- gradations per pixel (in comparison to 32 grey gradations
- with RGB16). Compression is achieved by reducing the colour
- resolution. A colour mean is stored for each 4x4 pixel.
- The human eye can detect anomalies in brightness much
- better than anomalies in colour, foso that optically there
- is hardly any difference to an uncompressed picture.
- A YVU9 picture with 320x240 pixels requires approximately
- 84kB. A YVU9 picture with 640x480 pixels requires four
- times the amount of data, 336kB.
-
- In order to portray a video recorded with YVU 9 on your
- system, you must have installed an Intel Indeo(tm)-Codec
- or you must use the supplied MainActor programme.
-
- Reports such as "data format cannot be read" or "No
- compatible driver is installed" mean that an Intel
- Indeo(tm)-Codec is not installed.
-
- - The ELSA Video Compression reduces the amount of data
- compared to YVU9 even further. A special process results
- in only ca. 3-5 bits/pixel being stored.
-
- As with YVU9 ELSA Video compression works in the YVU
- colour space. The compression ratio depends on the
- picture material to be compressed. Noise-free picture
- material is simpler to compress than noisy picture
- material. Picture material with large, single colour
- areas is simpler to compress than a detailed multicoloured
- picture. Using the ELSA Video Compression a picture with a
- resolution of 320x240 pixels requires between 20kB und
- 40kB. A picture with 640x480 pixels generally achieves
- a higher compression than a picture with 320x240 Pixel
- and requires ca. 120kB.
-
- 4.2 ELSA Video Compression (ELSA Quick Codec) in operation.
-
- The ELSA Video Compression is dealt with by your computer
- while you record a video in real time. Using the ELSA Video
- Compression has several advantages:
-
- - Videos with higher refresh rates can be recorded.
-
- - The drop rate decreases.
-
- - Videos can be recorded with a higher resolution.
-
- - Longer video sequences can be recorded on a hard disk
- than would otherwise be possible without compression.
-
- AVIs which have been recorded with the ELSA Video
- Compression require a Codec installed in the system in
- order to be played back. This is a programme which
- transforms the compressed information into a Windows-
- compatible standard format. Such a Codec is supplied on
- your ELSA CD and is automatically installed when the
- video software is installed.
-
-
- While recording a video, you should proceed in two stages:
-
- - Initially record a video using the ELSA Video Compression
- in order to benefit from the advantages described above.
-
- - Then transform the AVI with MainActor into a commonly used
- compression format such as MPEG, Indeo (tm) or Cinepak (tm).
-
- If you want to play back a video recorded with ELSA
- compression, it is recommended that you use the Media Player
- from Windows and a Real or Truecolour graphic mode. Using a
- monitor setting of 8 bits/pixel will possibly result in the
- video being screened or reproduced with a reduced colour
- count.
-
- You cannot play back AVIs recorded with ELSA Video
- Compresion on systems on which the ELSA Video Compression
- has not been installed.
-
- MainActor in the version 1.6 (or higher) is necessary to
- portray the ELSA Video Compression.
-
- The decompression of the ELSA Video Compression is optimized
- for maximum picture quality so that recompression is achieved
- as loss-free as possible. As a result, playback in real time
- with MainActor is only possible on the fastest computers.
-
- ----------------------------------------------------------------------
-
- 5. Notes
-
- 5.1 The videosoftware requires invisible offscreenmemory.
- This requirement changes with videoresolution.
- On the other side, the free offscreenmemory changes with
- desktop resolution. Therefore the videosoftware capabilities
- change with changing desktop resolution.
-
- 5.2 Recommended Desktop resolutions:
-
- - 800x600 Pixel, 16bpp, 75Hz
- - 1024x768 Pixel, 16bpp, 75Hz
-
- 5.3 Switching desktop resolution or colordepth without restarting
- the system leads to system crash, if videosoftware has been
- used before.
-
- 5.4 Switchwing between DOS-window and -fullscreen leads to system
- crash, if videosoftware has been used before and a TV-Set is
- connected.
-
- 5.5 To view ELSA compressed video you need MainActor Version 1.6
- (or higher).
-