Flickering in my slide show.

[ridgerunrbunny]

Jpg stills assembled in Premiere 6.5 with musak. Exported as a DVD mpeg2 to several authoring programs. Most but not all giggle and flicker. Why?

Bunny

[BJ_M]

because the source is progressive still images

[thecoalman]

Resize and apply a slight gaussian blur to them before importing into Premeire.

[ridgerunrbunny]

What size? What does the blur? I only have a very old version of Photoshop.

B

[BJ_M]

What does the blur

premiere

[dipstick]

Use Photoshop to crop all images to 720 x 540 and add guasian blur about 0.3 pixels (depending on the image). Make sure you allow for about 10% overscan protection around the ouside edges of the image. The outside 10% will likely be lost when viewing on TV. Then import into Premiere.

The reason you have flicker, is because some of your images have high contrast (black/white) and or have very thin horizontal lines that are shown and hidden when the TV scans the alternate fields. By adding a little bur, you are effectivley making the thin lines thicker and are covered by both fields.

[thecoalman]

What does the blur

premiere

If by that you mean the same type of anti-flicker filter you can apply it doesn't work that well on my editoor. Don't know about Premiere.

Seems the larger the images the get the worse they are. I suspect the filter is applied before it's resized and only applies a certain degree of blur. Useless if it's a huge image. Therefore I do it before it gets to the editor.

[ridgerunrbunny]

I did save them at the highest res in photo shop and there are thin lines, it is actualy a photo capture of a graph type picture.

[dipstick]

Yes thin horizontal lines wreck havoc when played on an interlaced monitor like a TV. The vertical lines will be just fine. This is because a TV will scan one set of fields then the other, if the horizontal line is thinner than both fields, it will only be visable every other scan resulting in flickering. Another poblem that wrecks havoc, is high contrasts and an overly sharp images.

Another thing you can try, would be to use a motion blur in the up and down direction.

I normally don't use any blur, unles I see an obvious problem. Sometimes I just use the blur bush on the problem area directly.

Good luck.

[jagabo]

Burn this image to an NTSC DVD and watch how much it flickers:

[thecoalman]

That's hurting my eyes.

[ridgerunrbunny]

yeah, I really did not need that. I am still a little confused tho. One said blur before importing into premier another said premier does the blur. So does that mean I can do it in premier before I "export" to author and not in photoshop before I "import" into premeir to edit?

skewes me if I'm a little thick.

Bunny

[jagabo]

One said blur before importing into premier another said premier does the blur. So does that mean I can do it in premier before I "export" to author and not in photoshop before I "import" into premeir to edit?

You can perform the blur any time before you create the MPEG file. The idea is simply to blur away those high contrast horizontal edges. I don't have Premiere but most video editing programs have a anti-flicker filter designed for specifically this problem.

[thecoalman]

but most video editing programs have a anti-flicker filter designed for specifically this problem.

Which as I mentioned doesn't work very well if the images are very large in my application. Don't know how well it works in Premiere... easiest way to find out it to try it.

[masterpug]

if you're just trying to make a slideshow of pics or of movies/pics in the same project,
use proshow gold or proshow producer which has a button to check for "antiflicker filter".
outstanding clarity and NO flickering on tv playback. you can even export as dvd spec
mpg2 for importing into premiere for further project building and/or dvd authoring
programs. if you're not using proshow gold/producer for slideshows you're missing
out.

[suppafreak]

ridgerunrbunny

If you want I can e-mail you a PSP action that de-flickers the image. I have been using it for sometime and it corrects majority if the flickering problems. All you will need to do is to load the action in the PSP action pallet, open the photo and press the play button in the action pallet. Everything else will be done automatically. Just e-mail if you are interested.

[jagabo]

but most video editing programs have a anti-flicker filter designed for specifically this problem.

Which as I mentioned doesn't work very well if the images are very large in my application.

Yes, the filter has to be run after the image is resized for video, eg 720x480. I would assume Premiere is smart enough to resize before applying the antiflicker filter. Well OK... it's an Adobe product so maybe not.

[thecoalman]

but most video editing programs have a anti-flicker filter designed for specifically this problem.

Which as I mentioned doesn't work very well if the images are very large in my application.

Yes, the filter has to be run after the image is resized for video, eg 720x480. I would assume Premiere is smart enough to resize before applying the antiflicker filter. Well OK... it's an Adobe product so maybe not.

In my case it's MSP....

[ridgerunrbunny]

OK, found both the filter and the blur in Premiere. Personally I find premiere to be a real pain in the ars, its rather bloated and behind the time. Too many clicks. But Its what I got. Thanks again will try this.

Bunny

[pijetro]

It's been a while, but right click over the clip..
Remove flicker...
It might be hidden under a submenu...
If v6.5 doesn't have this, then i suggest upgrading to Premiere Pro..