-
1. Re: Aliasing of Static Images
Richard M Knight Apr 12, 2013 5:18 AM (in response to John Ellenberger)You could try adding a blur filter to the slides.
-
2. Re: Aliasing of Static Images
John Ellenberger Apr 12, 2013 6:19 AM (in response to Richard M Knight)Any more details? Filter type? In Premiere or elsewhere?
-
-
4. Re: Aliasing of Static Images
Richard M Knight Apr 12, 2013 6:48 AM (in response to John Ellenberger)Try adding, in Premiere, a Gaussian Blur found under Video Effects/Blur & Sharpen, adjust the amount until the pattering is reduced but the photo is still sharp enough. When you have found a good setting for one photo copy and paste attributes to the other stills.
-
5. Re: Aliasing of Static Images
JSS1138 Apr 12, 2013 9:23 AM (in response to John Ellenberger)This is not right. You shouldn't need any effects for this to look good.
What format is the video? What are your sequence and export settings?
-
6. Re: Aliasing of Static Images
John Ellenberger Apr 12, 2013 9:46 AM (in response to JSS1138)I actually tried this and the blur really gets rid of detail quickly and it doesn't stop the aliasing on the encoded version. I had it set at 1. Anything more and most detail was gone.
The sequence setting is: 720 x 480 29.97 fps
To output I was just using one of the Vimeo presets: 640x480, 25 fps, progressive vbr, 2 pass 2 Mbps
-
7. Re: Aliasing of Static Images
lasvideo Apr 12, 2013 9:51 AM (in response to John Ellenberger)What is the resolution fo the original images? Since your sequence is SD, maybe the images are very high resolution thus creating the problem?
-
8. Re: Aliasing of Static Images
John Ellenberger Apr 12, 2013 9:59 AM (in response to John Ellenberger)I was poking around a little and I discovered something that seems to work.
- Right click on the clip and select Field Options
- Select Flicker Removal
I didn't try either of the interlace options but a colleague suggested that the problem was related to the two different fields and that fiddling with the interlacing might help. Not sure what flicker removal does but the flicker is gone and most of the detail still seems to be there.
-
9. Re: Aliasing of Static Images
lasvideo Apr 12, 2013 10:07 AM (in response to John Ellenberger)Nice fix. Congras!
-
10. Re: Aliasing of Static Images
John Ellenberger Apr 12, 2013 10:21 AM (in response to lasvideo)I don't think it has much to do with image scale. These old images have a lot of diagonal "hatching" in the backgound which was a way of doing shading with no color or grayscale. I think its like when a subject wears a certain patterned outfit--the fine diagonal lines interact with the A/B scan and you get an aliasing effect that causes the image to flicker.
But I'm not really an expert on such things.
-
11. Re: Aliasing of Static Images
JSS1138 Apr 12, 2013 10:21 AM (in response to John Ellenberger)The sequence setting is: 720 x 480 29.97 fps
To output I was just using one of the Vimeo presets: 640x480, 25 fps, progressive vbr, 2 pass 2 Mbps
Get the frame rates to match.





