moire/herringbone/crosshatched patterns in pan/crop
by Bruce Wertovitch
on
Aug 12, 2008 at 2:59:45 pm
I'm using Sony Vegas 8 and love using the can/crop option to add motion to my still pictures. However, I get tremendous moire/herringbone/crosshatched patterns across the picture. Any straight line jumps all over. Pictures of my deck floor or vinyl sided house, which has a large number of straight lines, are impossible to watch in pan/crop. Even trees and grass show the effect. I'm viewing on a plasma, wide screen TV. Any suggestions on how to eliminate this effect?
Thanks,
Bruce
Re: moire/herringbone/crosshatched patterns in pan/crop by Bruce Wertovitch on Aug 12, 2008 at 4:45:16 pm
Thanks for the help. I openned the digital pictures in Adobe Photoshop 6 and the picture properties tells me the pixel dimensions are 22.9 M with 3264 pixels wide by 2448 pixels high. I'm shooting with a Cannon 8M camera at highest resolution. Can I use Adobe Photoshop to reduce the resloution as you suggested? How do I go about that and what should I reduce it to?
Re: moire/herringbone/crosshatched patterns in pan/crop by Steve Rhoden on Aug 12, 2008 at 5:24:52 pm
Indeed, those resolutions are way too high to just drop into vegas.
You then reduce(or re-size)them to the size of your video projects,
eg...If you are editing for DV, resize them to 720x480.....
or for HD resize to 1920x1080 etc accordingly.
However, as you want to use pan/crop to add some motion to these
images you should then resize them just a tad bit larger than the
project formats, to compensate for resolution loss.
eg...(DV can be 800x600) etc.
Unfortunately i dont use Photoshop, i only use Corel. However the process is very straight forward and easy, just use the help
feature to step you through it.
Steve Rhoden
Creative Director
TNX EFFECTS STUDIOS.
www.youtube.com/hentys
Re: moire/herringbone/crosshatched patterns in pan/crop by Terry Esslinger on Aug 12, 2008 at 5:58:12 pm
A rule of thumb that I have heard some where (I think it was DSE) was to not have pic resolution larger than twicew the project res.
An easy (and free) way to do the resizing is to use Irfanview. It has a batch resizer.
Re: moire/herringbone/crosshatched patterns in pan/crop by Adam Rose Esq. on Aug 12, 2008 at 6:56:48 pm
get irfanview from www.irfanview.com (free) and use the batch conversion facility to resize/convert/rename/etc - is an amazing program that have been using for about 10 years at least. So fast and small / light.
if pan/cropping DV, I usually bring them in at double resolution, nothing larger.
eg 1440x1152 for PAL
Re: moire/herringbone/crosshatched patterns in pan/crop by Bruce Wertovitch on Aug 12, 2008 at 9:01:23 pm
Thanks for all the great info. I always find this forum so helpful. I tried 3 different resolutions: 720x480, 800x600 and 1024x768. Very little crosshatch in the 720, but loss of picture quality is evident; some crosshatch visible in the 800 with better picture quality; best picture quality with the 1024 but more of the dancing crosshatch. So, I guess it's a matter of personnel preference and how much dancing one is willing to accept. I'm assuming you all are getting some of the crosshatch in your work? My 50" widescreen plasma may be contributing somewhat to it as well. Don't know.
Thanks again for all the advise. Much appreciated!
Bruce
Re: moire/herringbone/crosshatched patterns in pan/crop by Steve Rhoden on Aug 12, 2008 at 11:54:46 pm
I'm assuming you all are getting some of the crosshatch in your work?
Sorry to inform you Bruce,no form of crosspatch here in our work..LOL
In the professional world certain things are unacceptable, and this is
one of them. To easily avoid this anomaly :
After resizing i color correct the images....Then activate "Reduce interlace flicker" in vegas for all images ...Then working in progressive mode i de-interlace each finish project.
(My personal method for a flawless,pristine result).
Steve Rhoden
Creative Director
TNX EFFECTS STUDIOS.
www.youtube.com/hentys
Re: moire/herringbone/crosshatched patterns in pan/crop by Bruce Wertovitch on Aug 13, 2008 at 12:30:37 pm
Beautiful. Just tell me if I'm doing this correctly. In Vegas, using Edit, Switches, I used Reduce Interlace Flicker. Seems that I have to do that individually for each photo. No option to set it to do all photos at once as they're added to the project? Then, File, Properties, Video tab, Deinterlace Method, I used None.(default is Blend) Results look great.
Two last questions and I'll try to leave you alone. LOL 1)Most of my video stuff is a combination of photos and dv video. OK to use "None" as the Deinterlace method with dv video in it? 2) I notice in Vegas, on the video tab directly above Deinterlce Method drop down is "Full Resolution Redering Quailty" drop down menu. The default setting is "Good". Leave that alone or use "Best"?
I can't thank you enough for taking your time to help out. Your tips have helped me tremendously and I'm very thankful.
Bruce
Re: moire/herringbone/crosshatched patterns in pan/crop by Adam Rose Esq. on Aug 13, 2008 at 12:49:54 pm
if one has photos, better to use BEST
deinterlacing the video is fine, depending on your output: what do you expect to be the main means of viewing? SD or HD? PC/ web or TV? SD TV will prefer interlaced esp if lotsa action etc.
Re: moire/herringbone/crosshatched patterns in pan/crop by Allen Zagel on Aug 14, 2008 at 1:48:17 pm
Hi Bruce
DSE once told me in a reply to almost the same question that if you're planning to use pan/crop the optimum size for Vegas is 1440 x 960. I too once had extremely high res stills same as you. Vegas get's blown away with photos that huge.
I even use 1440 x 960 on my generated media (text boxes) for a sharper crisper text. Then as mention, you have to right click each photo, go to switches and tick the "reduce interlace flicker". That does it for me.
Allen
NEW DVD - Europe, Trains-n-Trams
www.asxvideo.com
ASX Media Group, Inc.
Re: moire/herringbone/crosshatched patterns in pan/crop by Bruce Wertovitch on Aug 15, 2008 at 12:03:29 am
I appreciate all of you taking the time to respond. Your help has been great, as always. This is just the best place to ask for help and the people here are so kind to take their time to offer their advice. You've all helped me with my situation and now my simple "productions" are that much better for it. Once again, thank you all.
I'm sure you'll be hearing from me again. LOL
Bruce
