FPS-related problems in Premiere when importing a video (solved)

[quandore]

Hi there,

I'm editing a video with premiere and found this issue while exporting the media: in a previous exported file everything looked fine, no problems at all. Then I *** messed around with the frame rate ***

Problem is, the video is slightly out of focus. This only happens during motion

*** SEE WHY IN THE END OF THE THREAD ***

[quandore]

Ok I fixed it by just cutting the clip in two pieces, then I applied the effect on the initial part only.

if anyone still wants to explain me why that happened, I'm here listening

[quandore]

Oops the problem it's still there. In the preview it doesn't appear anymore, but once i finished encoding I loaded the avs of the avi file and looked at it frame by frame: it's still there!!!
What did I do? I must have messed up with something...

[jagabo]

I suspect you have interlaced video and are handling it as progressive. Post some sample clips?

[quandore]

Ok, I messed it up.

The video as Adobe recognizes it is progressive 1280x544 23,975 pixel ar (0,755)
When I imported it i changed the pixels aspect ratio to 1.0, I put in the right resolution (544p), i made sure it was progressive BUT...

I didn't pay attention to the frame rate. Adobe recognized it as 23,975 fps and since I didn't change it the slight difference between the sequence format and the video's one caused the problem.
I changed it to 23,976, Adobe would yet (for some reason) set it as 23,98, nevertheless it works perfectly!

I changed the thread title, maybe this could be useful in the future for someone else as noob as me.