CompuServe Thread

#SVHS ??dropouts??

9 messages in this thread
#61889From: SCOTT HIGGINSOct 15, 1993 6:00 PM
I am having a problem, but I am not sure that the problems are due to dropouts, they are completely blank frames. I am using FUJI H471S Master Quality SVHS tape on an AG-7750(using SoftVTR). I just purchased a case of this tape. I was told that this tape would work very well. I rendered 200 frames last night and had 5 blank frames. This is the first rendering that I have done with 3DSr3. I was doing a video-post rendering, to fields. I was using STARS, the KF Scene and a ALPHA logo aligned in the lower left corner. It does not look like a normal dropout problem. I have had some dropouts when I rendered to consumer grade SVHS tape. The dropouts on the consumer grade tape were only a few lines in width, not whole frames. I hope someone has some ideas. What is the best SVHS tape that is available.
#61894From: Yost GroupOct 15, 1993 7:03 PM
Are you using a Targa64? There's a note in the 3DSr3 readme.doc about how the 64 has an inherent firmware bug that could cause this, and provides a solution for it. (I don't have it here, or I'd send it to you.) Martin Foster would know more about that. If it's not a Targa64, you've got some other sort of hardware problem. – Jack
#61903From: SCOTT HIGGINSOct 15, 1993 7:50 PM
Jack, Sorry I neglected to list all of the Hardware. I am using an ILL-Pro CND/4M/A in a 486-66 w/32 megs. I have never had this problem with blank frames before. Thanks SSH–Graphic Realities–
#62009From: MARTIN G FOSTEROct 16, 1993 8:57 PM
Scott, here's something to look for. When the edit happens, is the framebuffer displaying the image you want it to layoff correctly? In other words is the framebuffer display black/blank or are you seeing the correct image. To see this you'd need one monitor showing your framebuffer output and a seperate one for your tape deck.
#61953From: Oct 16, 1993 3:41 AM
Scott: >> They are completely blank frames. It's not a dropout problem, sounds more like a striping or a sync problem to me. It would probably have nothing to do with the tape itself. Could you have a switch set the wrong way when you blanked the tape? Greg Pyros
#62090From: Randy SteeleOct 17, 1993 8:13 PM
Scott, We too have had the same problem. I found that sending a do nothing targedit command would clear up some of the frames, but some would still slip through. The r3 states that using the tplusloa.exe will clear it up entirely but I haven't confirmed this. You will need to write a batch file to save the rendered image and then edit it using the copycom (if a diaquest). You can still do it via the video post, but it isn't as easy as the direct vtr output. The gettga.exe will also give you blank frames. It isn't your tape or your vtr. I didn't have this while rendering across our network via batch files. But now using one of the machines direct I began experiencing this problem too. It is an odd thing. I'm trying to find another easier solution.
#62109From: John TissavaryOct 17, 1993 10:34 PM
I, too, have had the Targa+ send blank frames to my VTR. The problem has not recurred, so I haven't been able to do anything about it other than insert edit the missing frames. Please let me know if you discover anything further. Thanks, John Tissavary (La Luna cie)
#62117From: MARTIN G FOSTEROct 18, 1993 1:00 AM
John, do you have a targa+ 64?
#62125From: John TissavaryOct 18, 1993 2:17 AM
No, I've got a 16/32+, but I've had the same thing happen once. John Tissavary (La Luna cie)