How do I change the center point of pan/crop?

YesMaestro wrote on 6/19/2014, 10:47 AM
I have several graphics that I want to position in various parts of the screen and use the pan/crop feature to zoom in a little bit on each one to create the impression of it growing in size. Problem is that it zooms from the center of the project but not the image. There is that circle in the center I can move but do not see any change in position. I never understood what that is there for. I know I can do it via the track but I don't want to have 15 tracks. Thanks.
Paul

Comments

Tom Pauncz wrote on 6/19/2014, 1:59 PM
Paul,

Think of Pan/Crop as a 'window' on top of your graphic. You cannot use it to position the graphic on the screen.

You need to do that with the 'Track Motion' tool
Tom
Former user wrote on 6/19/2014, 2:34 PM
Try turning off SIZE ABOUT CENTER and STRETCH TO FILL FRAME>


I use it to position graphics all of the time. Very seldom use track motion.
Tom Pauncz wrote on 6/19/2014, 2:49 PM
Yes, but it is still the 'window' on the graphic you are moving and not the cropped image.

Am I mis-reading something here??

Tom
Former user wrote on 6/19/2014, 3:18 PM
Tom,

Not sure what you mean by window vs. cropped. I use it to position graphics with alpha channels all of the time. I change size and position. When using pan cropped, the graphic is always treated at its original resolution. When using track motion, it is treated at project resolution.
Tom Pauncz wrote on 6/19/2014, 3:41 PM
My term 'window' just means that when I zoom in using crop, I can move that (the crop lines) around, but than it just shows a different area of the picture. I am NOT moving the picture itself within the event.

With track motion, I can move the cropped image and place it where I want within the event.

Tom
larry-peter wrote on 6/19/2014, 3:43 PM
Dave's method is the way to go. What I do is set the preset in the pan/crop window to the project's aspect ratio, then click the icon to Maintain Aspect Ratio, and deselect the "Size around center" icon. You know have a "window" that you can scale up and move around to position your graphic wherever you want.
Tom Pauncz wrote on 6/19/2014, 4:22 PM
@Ed,
That's exactly what I was trying to describe.. :-)
Tom
Former user wrote on 6/19/2014, 4:27 PM
Hmm, I didn't get that in the question. I didn't see them say anything about cropping the graphic. Maybe they can come back and clarify.
Tom Pauncz wrote on 6/19/2014, 4:42 PM
"...use the pan/crop feature to zoom in a little bit on each one to create the impression of it growing in size..

Tom
B.Verlik wrote on 6/19/2014, 4:54 PM
This is how I do it, using Pan & Crop only. If you know the length of this "Zoom" event. Choose your frame from the drop-down, (like 16X9 or whichever) Now you can make the frame any size, by grabbing the edge and making a diffenent size, in relation to your jpg/png. Make your "widest view of the object on the first frame. Go to the last frame and shrink the frame to its closest view. If the object is not too close to the edge of its original jpg or png edge, it should "Zoom" in to where you want it. If the object is too close to the edge of its original jpg or png edge, you may have to mask the object. No need for track motion. I don't think you have to change anything. The inbetween frames, between 1st and last, will seemingly zoom in. But you may need to readjust some of the middle frames if the zoom "curves" in. If your object is centered in the original jpg/png, it should be a straight looking zoom.
Hope I understood the original question and that I didn't forget any details.
Here's one I forgot. You can drag the frame to where you need it., so you can center its last frame. So, you pretty much only need the 1st and last frame and the length of the event will fill in the rest..... unless it curves.
Dang it, one more just in case it's not making sense. You must choose animate, so you can make keyframes to do this, in case it's not obvious Make your jpg/png the exact amount of frames or seconds in length. Widest view on 1st keyframe....closest view on last keyframe. whew.... I think that's it.
Former user wrote on 6/19/2014, 5:22 PM
IF it does need to be cropped, you can use the mask effect.

Chienworks wrote on 6/19/2014, 8:10 PM
I still think Pan/Crop would be come about 10 times as awesome if we could have TWO frames: one for panning, and one for cropping. Normally they would be the same thing and work together, which would then operate exactly as it does now. However, at the click of a toggle button they could separate and be manipulated individually.

One thing we cannot do with the current tool is zoom in, cutting off some of the image, and then change the position within the project frame. As has been noted above as soon as we crop in, we're stuck with the image being centered in the project frame. With two separate frames we could crop and zoom in with the crop frame, then position and size it wherever we want with the pan frame. This would effectively give us all the usefulness of track motion right within the pan/crop tool, without the track motion limitations.

And yes, i've submitted this as a project suggestion a couple of times already.
TeetimeNC wrote on 6/20/2014, 4:44 AM
@Chienworks re TWO frames

+1

/jerry
Rory Cooper wrote on 6/20/2014, 5:07 AM
Swap zoom for enlarge cause you can’t zoom in Vegas unless it’s a 3D track project.

You only have one graphic with 15 elements on that graphic right? So you can use the track motion.

You have 15 elements so create 15 keys = all normal size
Then in your track motion move the blue centre round about where you want to zoom and enlarge shift and position and create a key between the two normal keys
Then move the blue circle to next element and enlarge shift and position and create a new key between the normal keys and so forth.


when you zoom from the centre = it is one graphic so just move to the centre of each element ? If you use the pan crop window
TheHappyFriar wrote on 6/20/2014, 5:39 AM
Maybe things changed after 10 but I can move the pan/crop around my image so it's not stuck zooming in/out the center. I can move about the image and zoom in/out on various parts of the image. Of course I can't move the image around the track because pan/crop is for panning and cropping, not moving the image around the track.

If you want to move stuff around the track you use track motion.

Tom gets it. :)
Rory Cooper wrote on 6/20/2014, 5:45 AM
yes asyou said "If you want to move stuff around the track you use track motion.Or you move the camera.

That’s the point = what is moving? with long exposures of the night sky = you are not moving! the starry sky is moving because for you to take that image your camera would have to be in line with the earth’s spinning axis at the north pole. if you were spinning at the equator you could only ever get a blurry mess, a guy at the equator could never get the sky spinning around him with Polaris axis in line with his lens = impossible. Sorry but enjoy your weekend anyway.
TheHappyFriar wrote on 6/20/2014, 12:00 PM
He wants to move the event on the TL & crop it down. He didn't post any more details on what's wanted, just what's not working.

Plus, if you're at one of the poles you'd still have a blurry mess, everything would still be spinning. :) The closer to the center axis would be smaller circles is all, but it could still be a blurry mess (point up at a ceiling fan and do the same thing, same results. Ceiling fans are really neat for showing how what shutter speeds to!)
Rory Cooper wrote on 6/23/2014, 2:13 AM

Yes correct, the point about the illustration I was using about the night sky. Something at first may appear to be moving but is not. = Cropping is not zooming. So cropping wont zoom anything, it might appear to be zooming in but it is cropping, so you have to use track motion if you want to zoom and if you want to zoom individual elements then each element has to be on a separate 3D track in a 3D parent track.

Excellent point using the ceiling fan!! Nice creative thinking. you are still and the fan is spinning. now stand on the spinning ceiling fan and take a photo of the room moving around you? All sorts of problems arise.
Chienworks wrote on 6/23/2014, 7:52 AM
Rory, i guess i can't really see the difference between cropping with pan/crop and having the image get bigger in the frame, and zooming with track motion and having the image get bigger in the frame. I really think this is a case of a difference that is semantic only. If you really want to split hairs, track motion doesn't zoom either, since the result is cropping the image down to the portion you want to have fill the frame.

On the other hand, "zooming" with pan/crop often results in a better quality image due to lack of resampling down to project size first, while track motion can not ever produce a better image than pan/crop. Therefore, it's always a good idea to "zoom" with pan/crop whenever possible.
Rory Cooper wrote on 6/23/2014, 8:41 AM
Ok so is zooming with your lens and doing a dolly shot splitting hairs = both are zooming but yet they are different

When you zoom with your lens everything gets bigger in relation to lens centre = pan and crop
When you dolly in to your scene everything gets bigger in relation to space and distance = zoom track motion.

And yes track motion does zoom and pan and crop crops. Does zooming with pan and crop often result in better quality = based on what?
Former user wrote on 6/23/2014, 8:54 AM
Rory,

Zooming with pan/crop will sometimes be better quality because the Pan/Crop function retains the original resolution of the still/video.

Track motion converts the image to project resolution before zooming.
Rory Cooper wrote on 6/23/2014, 9:23 AM
Well then How do you explain then that pan and crop is still on the track motion track which as you say converts the resolution to project resolution = it is doing it anyway as the pan and crop is on the track motion track the pan and crop is not independent from track motion not so?
Also you cannot produce more resolution than you project size anyway...so for me the info doesn’t add up.
Former user wrote on 6/23/2014, 10:02 AM
rory,

Try yourself.

Get an image and zoom using the PAN crop and the track motion. You will note that the track motion shows zooming artifacts much sooner than the track motion.

Using pan/crop, the image is not converted to project resolution until it is rendered. In track motion, the image is converted to project resolution first. So you if use an image of higher resolution than your project, you can zoom further in using pan/crop with less zooming artifacts.

Track motion takes the image on the track and zooms it. Pan crop zooms the image and then places it on the track.
Chienworks wrote on 6/23/2014, 2:21 PM
If you combine both Pan/Crop for the zoom and Track Motion only positioning, the cropping is done first at the images full resolution and then resampled to the project resolution after. At this point Track Motion merely moves the image without resampling.

If you are using both and doing some zooming in both then you'll resample twice and make a big mess.