Problems with DV output in slowmo

drtelemark wrote on 3/3/2002, 10:19 PM

I have rendered numerous projects in Videofactory 1, VF2 and now in VV3a with slow motion segments. The problem I always run into is a stuttering or blurring effect during slow motion segments when the camera is in motion a bit (usually not too much but just following the subject). What settings can I adjust to improve the output. The video is captured in the standard NTSC format, lower field first.

Second, when outputting to tape today running at 90% speed on some segments of video, the video seemed to cycle about every 3 seconds with short burst of stuttered looking video, then back to normal during all the segments that were at 90% speed. Looked very odd. The WMV file I made (at 3 mbps) was entirely fine. Seems to be isolated to DV output to tape only. Any help would be appreciated.

Comments

sqblz wrote on 3/4/2002, 6:15 AM

My grain of salt.
Avoid slowmo of scenes that you took with horizontal pan of a scene containing vertical lines (or the opposite).
Whenever you have lines moving transversally across the scene you will have stutter because of the interpolation.

vitamin_D wrote on 3/4/2002, 7:58 AM

You may want to check out Motion Perfect at http://www.dynapel.com/private/mp_overview.htm -- this is for interpolating frames from already rendered footage.

- jim

Control_Z wrote on 3/4/2002, 8:05 PM

I had this trouble with VV3 also. Not many scenes, but one or two and none of the usual deinterlace/resample/best quality stuff worked. I didn't have the choice of not using those scenes as they were integral.

I've never had good luck with MotionPerfect, but after a day or two of fooling with it I just used Premiere6 which handles it all very easily without jumping through any hoops. Clearly something wrong.