Keep the previews the same as the footage.
Hi Jim, I tried making the Preview the same size, it wont let me go bigger than what is there already. I type 4096 in and hit enter or tab and it just goes back to 1919.
Well how 'bout that.
The problem I see is that the preview resolution isn't evenly divisible by 8, one of the cardinal rules when dealing with MPEG. This is likely because your original footage also has an odd frame size, meaning those dimensions aren't "normal'. 4k is typically 4096 x 2304 (16:9) or x 2408 (2:1). I've never seen x 2160 before, and trying to keep that same oddball aspect is what's causing the previews to go to weird dimensions, which is what's causing the distortion and black line.
Ok, so i need to create a new sequence with a custom set up, and a "Quicktime (Desktop)" Preview format? Can someone recomend a codec to use?
Hi again Jim, 4096 x 2160 is the full frame of the Scarlet images that we shot. I plan to go to 2:35 in the end, but though I'd edit with what was shot. Any thoughts on codec to change for my previews?
Import the video and drop it on the "New Item" button to create a sequence that matches the source. Anything else is probably asking for trouble.
Then, I suggest you merely change the 1919 to 1896. That should make your second number divisible by 8 also - I hope. My best guess is that you might be able to get 1896X1000. Both 1896 and 1000 are evenly divisible by 8. (Jim is correct about that, of course. The whole thing falls apart if both numbers are not evenly divisible by 8.)
See if that changes things.
Now, I found something interesting. I downloaded a couple of RED clips. One was 4096X2304 and the other was 4480X1920. The first one produced sequence settings with preview files of 1920X1080. I like that just fine. The second one gave me 1918X822. Interesting. And I guess we know what your 4096 x 2160 does.
I looked for black lines after rendering the one with previews of 1918X822. I couldn't spot them. So I can't check to see what happens if you change it to 1896. Please give it a try and let us know if that helps.
Any thoughts on codec to change for my previews?
Well, give Steven's advice a go first.
And keep in mind, previews aren't always necessary to the edit process. You should only create them when you have to see realtime preview and dropping the playback resolution just doesn't cut it. Further, you should not be using those previews for export anyway, so creating them when you don't need them will only slow things down.
I was having a similar problem importing a high-res timelapse sequence from After Effects CS6 to Premiere Pro CS6 via adobe dynamic link.
I think I've fixed the problem by altering the sequence settings. Originally it was set for I-Frame only MPEG, now I set it for Microsoft AVI and it seems to have solved the problem.
Yea, the MPEG preview file format slightly distorts the image. I just learnt to live with it while cutting, knowing that the final renders were going to be fine. Prett annoying though.
Sent from my iPhone.
0402 758 062