Thread View: comp.multimedia
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Started by Henry Chung
Fri, 14 Aug 1992 23:55
More info on Video Blaster
Author: Henry Chung
Date: Fri, 14 Aug 1992 23:55
Date: Fri, 14 Aug 1992 23:55
72 lines
2588 bytes
2588 bytes
OK, several people sent me E-mail asking for more infomation on Vblaster. Here is a brief description of its features. VIDEO ACQUISITION: - software selectable video source from 3 composite video inputs -supports NTSC and PAL system WINDOWS/OVERLAYING: -windows positioning and sizing on sigle pixel boundaries -VGA graphics and video overlay via graphics color key (256 keys) MASKS: -color keying, luminance and chrominance masking IMAGE ACQUISITION -supports PCX,TIFF,BMP,MMP,GIF,JPEG, and TARGA -resolution 640x480 VGA -supports up to 2 millions true colors IMAGE MANIPULATION -live and still image zooming and scaling -freeze, save and load video images -Crop and resize images -hue,saturation,brightness and contrast control -vertical and horizontal panning AUDIO MIXING -mix amplify stereo sound (0.5W output at 4 ohms load) -mix audio sources: stereo line-in, CD audio, stereo FM, microphone (note: You can input audio from SoundBlaster with a special cable from Creative lab. Vblaster does not come with any audio cables.:( ) -full software control of fade-in, faade-out,left/right volumes and mcrophone mixing INPUTS: -female RCA jacks for 3 video signals (75 ohms impedance) -D-15 connector for VGA output -Ribbon connection ofr VGA feature connector -Mono jack for microphone input -female RCA jacks for line input OUTPUTS -stereo jack speaker output -D-15 connector to SVGA monitor I/O memory address -software selectable I/O address -software selectable frame buffer base address (1-15M) -software selectable IRQ (irq 5, 10, 11, 12) Video frame buffer resolution -1024x512 SYSTEM COMPATIBILITIES AND REQUIREMENTS -IBM PC-AT and higher compatibles -full length 16 bit slot -VGA or multisync monitor runnning at 50-70Hz with horizontal scanning rate of about 31.5Kz. - not more than 15M of system RAM. The package comes the following software: -Video kit software -MMPLAY -VBDEMO -TEMPRA GIF -TEMPRA SHOW -MACROMIND ACTION! Hope this infomation can answer some of your questions about vblaster. Feel free to post any questions or send me e-mail if you want more information /Henry
Re: More info on Video Blaster
Author: Stefan Hartmann
Date: Sat, 15 Aug 1992 23:03
Date: Sat, 15 Aug 1992 23:03
81 lines
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In <1992Aug15.042205.8458@ryn.mro4.dec.com> chungh@armory.enet.dec.com (Henry Chung) writes: >OK, several people sent me E-mail asking for more infomation on Vblaster. >Here is a brief description of its features. >VIDEO ACQUISITION: >- software selectable video source from 3 composite video inputs >-supports NTSC and PAL system >WINDOWS/OVERLAYING: >-windows positioning and sizing on sigle pixel boundaries >-VGA graphics and video overlay via graphics color key (256 keys) >MASKS: >-color keying, luminance and chrominance masking >IMAGE ACQUISITION >-supports PCX,TIFF,BMP,MMP,GIF,JPEG, and TARGA >-resolution 640x480 VGA >-supports up to 2 millions true colors >-software selectable frame buffer base address (1-15M) >Video frame buffer resolution >-1024x512 Hi, (I just deleted a few specs), so what is the real size of image grabbing ? Is it grabbing from a PAL source, where there are 576 visible scan lines only 480 scanlines or 512 ??? Is the horizontal grabbing 640 or 1024 pixels ? A major bug seems to be the memory mapping, so ypu can only have 12 Mbytes Rams or 8 Mbytes RAM with 16 or 8 Simm slots. You can't use 4 pieces of 4MB Simms which gives 16 MB Ram which i gonna buy now !!!! :-(((( >-VGA or multisync monitor runnning at 50-70Hz with horizontal scanning >rate of about 31.5Kz. So does this only support 31.5 KhZ ? Or is it adjustable ? With only 31.5 Khz you have at 640x480 only 60 Hz and at 720x400 (text mode) only 70 Hz ! 800x600 would only be with about 40 Hz !!! But somebody claimed it should work on the Speedstar ?!? How do you set the horizontal frequency to get it run in 800x600 ? >- not more than 15M of system RAM. >The package comes the following software: >-Video kit software >-MMPLAY >-VBDEMO >-TEMPRA GIF >-TEMPRA SHOW >-MACROMIND ACTION! >Hope this infomation can answer some of your questions about vblaster. >Feel free to post any questions or send me e-mail if you want more information >/Henry Best regards Stefan Hartmann. email to: leo@zelator.in-berlin.de -- ************************************************************* * Stefan Hartmann This is how to contact me: * * EMAIL: leo@zelator.in-berlin.de * * Phone : ++ 49 30 344 23 66 FAX : ++ 49 30 344 92 79 * *************************************************************
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