I have an upside down gopro video. When i rotate it 180 degrees in event pan/crop, the video loose original sharpness, like adding a little blur. I can see it in preview window at best/full. Or save to png and compare it with irfanview rotated version..
Why? It doesn't matter if i use track fx or event fx.
Have you tried rotating the media in Properties?
Probably best to post a side by side image comparing the image sharpness before/ after rotation. Ps - Lose not loose :)
So you don't believe me? :)
Here you are, clik on the picture: https://postimg.org/image/f1k02tytl/
John: that is the trick, thanks! But why event pan/crop does this?
I'm not sure. Glad it worked. I remember a bug from long ago where exact increments of 90 degrees would produce unexpected results, but my initial search hasn't produced the thread I wanted.
Confirmed with a 2160-25p XAVC 420 8bits footage (180 P/C is blurry compare to rotate media). GPU on or off same problem.
That's most probably a bug then.
So you don't believe me? :)
Here you are, clik on the picture: https://postimg.org/image/f1k02tytl/
John: that is the trick, thanks! But why event pan/crop does this?
So the left one is Properties>Rotate, and the right one is rotating via event pan/crop ?
yes
Interesting. What graphics card are you (and Gjeffrey) running? I am using AMD 290 and not seeing this problem on my system.
Also, does it render this way or is just an artifact of the preview window?
i don't use any gpu acceleration, so graphic card doesnt matter here.
The graphic card still drives your display.
It might be helpful for others to know the answer to my two questions: which card, and does the problem appear in your final video render or just in the preview window?
Thanks.
GPU on or off, same issue. That's not the problem here.
I am using AMD 290 and not seeing this problem on my system.
Have you tried to composite (difference) both files on the timeline? Do you have a completely black preview?
"Have you tried to composite (difference) both files on the timeline?"
I did.
"Do you have a completely black preview?"
I did.
I haven't tried it with interlaced media with various resample settings, yet.
Weird John.... I did exactly like you but end up with a difference.
Might be framerate related?
The graphic card still drives your display.
It might be helpful for others to know the answer to my two questions: which card, and does the problem appear in your final video render or just in the preview window?
Thanks.
KalmX 750ti and yes, appears in rendered file.
I also see this issue in VP14 build 252. The file rotated 180 degrees by Event Pan/Crop is slightly softer than the file rotated by Media Properties (which is lossless). Easy to verify on the histogram. But it also occurs in VP12, so it dates back a long way. I guess that Event Pan/Crop does some sort of anti-aliasing and it's not clever enough to switch that off when the rotation is exactly 90/180/270 degrees.