July 17, 2021 at 4:41 pm
Hi! Could anyone please help me with a clip which shows motion artifacts on export?
As you can see, at 1:17 the running man’s pants become jagged: https://www.youtube.com/watch?v=fiDTyLi4ADM
This 4K video presentation was made on a PC using Pr Pro CS6. The B/W clip (previously downloaded from YouTube) is 29.97 fps 1280 x 720 . My sequence settings are: Custom Mode – 24 fps – Progressive – 4096 x 2160 – Square pixelsSome contents or functionalities here are not available due to your cookie preferences!
July 17, 2021 at 9:47 pm
You’re blowing it up significantly beyond it’s normal size, so that would likely be a part of it. There’s also a good chance that clip from the movie is also originally interlaced, which compounded when blown up by a factor of 3 would cause problems. And quite likely 29.97fps. If this is correct, it’s probably a “it is what it is” thing. But someone else might have some options for you.
How did you obtain that clip from It’s a Wonderful Life? And what’s the specs on that clip with regards to frame rate and interlaced/progressive?
July 17, 2021 at 11:15 pm
Thanks for your reply, James! I downloaded it from YT so I suppose it’s progressive. It’s 29.97 fps. Could you please explain how I can avoid the “blowing up”? The sequence settings were generated to fit my 4K footage. Do I need to change them?
July 17, 2021 at 11:42 pm
If you want the clip to fit the screen then you will need to enlarge it. You are making it 3 times bigger so you will see jagged edges and more grain. I am surprised it looks as good as it does.
July 17, 2021 at 11:46 pm
Thanks, Jerry. Sorry if this is a dumb question but can I make the screen smaller? Do I need to change the seq. settings?
July 18, 2021 at 12:21 am
What is your final delivery screen size? If it 1920×1080 then the “wonderful life” footage will probably look better. Was the footage of you shot in 4k? Fitting you into 1920×1080 won’t change the way you look. I would leave your settings as is. The black and white footage looks pretty good to me. You could save your project and then change your sequence size to 1920×1080 Progressive and see if there is a difference in the black and white footage.
July 19, 2021 at 3:06 pm
Thanks, Jerry. It didn’t work. Please let me know if you have other suggestions. Thanks!
July 20, 2021 at 4:57 pm
If the film (24) is inside a 29.97 clip, then the clip has 3:2 pulldown added. You will need to remove this to get back to the original 24p. From what I can tell, Adobe PrePro does not have this option in the Interpret Footage dialog. You will need to use After Effects to do this. That said, the clip you downloaded from YouTube probably already mangled the fields to the point it will be unrecoverable. A $7 DVD of the movie would be a much better starting point.
July 20, 2021 at 11:12 pm
I’ll try that. Thank you very much, Paul!
July 20, 2021 at 11:24 pm
Does it matter what kind of DVD I get (Blu-ray, 4K, etc.)?
I actually bought it from Microsoft Movies, thinking I would own it locally, but apparently they don’t let you download the actual file.
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