CompuServe Thread

#Is Targa+64 NTSC good?

2 messages in this thread
#40863From: Ana Francisca GervasApr 19, 1993 3:34 PM
Bailey, Me again. If I'm not wrong, I think that you get wrong concept (probably we both are wrong <g>). From my modest understanding, when you are in 512 or 756 lines resolution, interlaced, the targa is "outputting" (is this the right word?) an NTSC signal (14.318 MHZ, H:15.734 KHz, V:30 Hz). The diferences are in the way the signal is sending to the monitor/VTR. The Targa+ has three outputs: composite video, SVHS Y/C, and RGB output. The Targa has an encoder/decoder for the first two outputs, and the RGB is "pure" video output, with the three channels (Red, Green and Blue) and one H/V sync channel (difficult to translate this -simple- concepts from spanish). The encoder/decoder of the Targa has less quality than those (expensive) profesional encoders/decoders or one of those others transcoders. So, for the best output you'll need an external device to convert those separate signals for an output that will be accepted by your video. Or you can take an VTR that admit direct RGB input (because they have an encoder/decoder, transcoder or whatever it's inside of it -and please (this is for one of those wonderfull master gurus that forms the evanescent spirit of this marvellous forum <g>) if I'm wrong, COULD YOU EXPLAIN IT TO ME TOO??? <- Sorry, but this things happens when you have just become from read Ionesco's The Bald Soprano 🙂 Ana
#40898From: Bailey BrownApr 19, 1993 11:51 PM
Ana, I am a unix programmer at work, but at home I am a PC guy with a AMI 486DX2/66 VLB with 16meg (one 16meg simm with room for 3 more), an 877meg SCSI-2 hard drive, local bus SCSI-2 controller and local bus S3 805 graphics, Nec 4FG monitor, and a Toshiba XM-3401B CD in an 8bay tower case. The S3 805 board (made by NDI) works well with 3DS because it can use the 1024x768x256 mode for wireframe editing and 640x480x24bit for rendering. Thanks for the explanation of RGB->NTSC encoding. I think I will use onboard encoding for now and get the external encoder later if I need it. I talked to a video mailorder place and they said the Sony encoder for the EVO-9650 costs about $2K. Someone was telling me about the Matrox Professional Producer board. He said it is as good as the ATVista for about half the price. Have you heard anything about this board? I am tempted to sticke with the known quantity–Targa+–but the idea of getting much better quality at the same price from a company I've heard of before is appealing. Bailey