moire/herringbone/crosshatched patterns in pan/crop

[Steve Rhoden]

Bruce,
That is because you are using high resolution images….you need to
reduce them in a image editing software first.

Steve Rhoden
Creative Director
TNX EFFECTS STUDIOS.
http://www.youtube.com/hentys

[Bruce Wertovitch]

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?

Again, thanks for you help.
Bruce

Bruce Wertovitch

[Steve Rhoden]

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 720×480…..
or for HD resize to 1920×1080 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 800×600) 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.
http://www.youtube.com/hentys

[Terry Esslinger]

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.

[Adam Rose esq.]

get irfanview from http://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 1440×1152 for PAL

[Bruce Wertovitch]

Thanks for all the great info. I always find this forum so helpful. I tried 3 different resolutions: 720×480, 800×600 and 1024×768. 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

Bruce Wertovitch

[Steve Rhoden]

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.
http://www.youtube.com/hentys

[Bruce Wertovitch]

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

Bruce Wertovitch

[Adam Rose esq.]

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.

rock —-> you <---- hard place

[Steve Rhoden]

You are welcome Bruce, we are all here to help,

1). Let the de-interlace method remain as ‘Blend fields’

2). full resolution quality set to ‘Best’ when you are working with
images on the timeline. Set to good otherwise (cut down on
rendering time).

Sorry, you have to activate ‘reduce interlace flicker’ for each image.

You can also try out a free de-interlacing filter that yields good results (if you want an added aid), called ‘smart deinterlace’ at:
https://www.mikecrash.com/modules.php?name=Downloads&d_op=viewdownload&cid=13

Steve Rhoden
Creative Director
TNX EFFECTS STUDIOS.
http://www.youtube.com/hentys