Judder on HDCAM output???

O

Omar67

Active member
Hello,

I hope this letter finds everyone well. I shot a film on the HVX200. I shot it at 1080i/24p and recorded on a FIRESTORE FS100. The project came into my avid system at 1080i/29.97. I then exported the tilm to a QUICKTIME (DXnHD) file for an output that was supposed to take place at a professional dubbing house to HDCAM tape. When the file was brought in to FINAL CUT pro (at the dubbing house), it looked perfectly fine on the computer. When we are trying to lay down the movie to tape, there is a strong judder when the actors move. It does not appear on the computer monitor on playback, but it does appear on the actual HD monitor as it will on HDCAM tape.

What are we doing wrong? Why does it look okay on the computer monitors? but not on the actual tape or HD monitors? When exporting this to a file, should i change the frame rate to 23.97? Should I have exported it at 23.97 instead of 29.97 even though i edited at 29.97?

anyone ever have this issue?

Omar
 
Haven't expereinced the issue, but want to offer some comments that may help you trouble shoot.

FCP only displays interlacing when the viewer or canvas is set to 100%. Could be an interlacing problem that was not noticed because the canvas was set to something other than 100%.

Is it possible that the FCP import removed the pull down or added an extraneous pull down?

Is it possible that your sequence preset (command + 0) is set to something other than your footage or desired output?

Happy troubleshooting and please report what you find out.


Jason
 
two things could be happening:

1. frame rate of your footage and timeline might not match
2. there is a natural "juddery" type thing that often occurs with moving subjects in progressive footage.
 
Ooooooooooh how juddery? I have shot alot on the camera. Several features. But i have to say this is the first time i have actually seen 1080I images on a HD (tube not digital) Monitor. Most of the features i have shot and stored on HD tapes, but the clients always wanted the NTSC versions. Those NTSC versions were not juddery at all. They have the same motion effect that are on a computer monitor etc. Is that judder effect that much stronger comparing NTSC to HD?

Omar
 
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