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FreeTrack Forum > FreeTrack : English Forum > Support : Tracking System > What is better resolution/FPS/Jitter combination

RSS > What is better resolution/FPS/Jitter combination, A4tech PF-130MG.

slako	#1 12/06/2008 - 12h40 Top
Class : Apprenti Posts : 2 Registered on : 12/06/2008 Off line	Hi everybody! Just purchased the A4Tech PK-130MG webcam. Has done some tests on my Vista x64 with webcam options without removing of IR filter under Freetrack Found the following played combinations: 1. Res=640x480, FPS=15, Jit=0 (driver says that 640x480 can be played on 30FPS, but freetrack shows 15) 2. Res=352x288, FPS=25, Jit=0 3. Res=352x288, FPS=30, Jit=5-7 4. Res=352x288, FPS=46, Jit=15 Which one is the better to be used with Freetrack? Thanks!
didja	#2 12/06/2008 - 13h46 Top
Class : Webmaster (admin) Posts : 1043 Registered on : 09/07/2007 Off line Www	Hi slako, Just forget 640x480, I guess it'll need to much CPU resources. now, let's have a peak to the FAQ... What does the 'jitter' measurement mean? Jitter counts the number of frames that deviate more than +/-15% of the average frame rate in a second. It indicates frame rate instability which can potentially cause a reduction in panning smoothness. If the deviation is small FreeTrack, when minimized, may be able to neutralise it, so a high jitter number does not necessarily mean there will be high jitter in the output. High jitter can be caused by anti-flicker being enabled or equivalently, outdoors mode being disabled. Then, better FPS are more important than jitters. Try choice 4 and if jitters cause problems, let's try choice 3 and then choice 2. But I think that 46 FPS and jitters=15 would be great ! Have fun ! Rémy Edited by didja on 12/06/2008 at 13h46.
slako	#3 12/06/2008 - 20h46 Top
Class : Apprenti Posts : 2 Registered on : 12/06/2008 Off line	Thanks a lot didja! Will assembly a cap tomorow and check it on fly.

FreeTrack Forum > FreeTrack : English Forum > Support : Tracking System > What is better resolution/FPS/Jitter combination

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