Vignette removal

Rollason · Post by **Rollason** » Fri Oct 17, 2008 7:59 pm

I have some clips where, zooming in with a polaroid filter in place, I vignetted the clips. I believe I read somewhere a method to, in effect, reduce the apparent size of the clip and thus trim the outside edges of the clip.
Can anybody give me further information on this or possibly direct me to a tutorial? I've checked through the forum but can't find anything that appears to offer a solution.
Many thanks.

Trevor Andrew · Post by **Trevor Andrew** » Fri Oct 17, 2008 10:51 pm

Hi

The Cropping Filter will remove the vignette but leave you with a black border.
Not much difference I suppose.

You could try the Distort function under the ¡¥Attributes¡¦ tab

Drag the preview frame to reveal a corner, drag corner to resize frame
Right click screen for Anchor positions.

With a bit of practice you should remove the vignette

sjj1805 · Post by **sjj1805** » Fri Oct 17, 2008 11:36 pm

You can use the cropping filter without having a black border.
You just have to untick the "Fill Color" box

Trevor Andrew · Post by **Trevor Andrew** » Sat Oct 18, 2008 9:00 am

Cheers Steve

So many years and I hadn¡¦t seen that tick box.

Now the cropping tool may get more use.
Must start looking harder

Thanks again.

Rollason · Post by **Rollason** » Sat Oct 18, 2008 11:34 am

Thanks Steve. and Trevor for your snappy response.
I'll give that a try, Steve. and see how it goes. I assume it works for the whole selected clip in which case it should be really effective.
The help you chaps give is really appreciated.
Regards, Roy.

Rollason · Post by **Rollason** » Sat Oct 18, 2008 2:54 pm

Hello again,
Further to the vignetting problem. As suggested I've clicked on the 'fill colour' box to clear the border and that worked fine. From the drop down menu to the left of 'customise filter' I selected the 8th box which, with 7, 9 and 10, are, I guess, fixed reduction borders. Are they as the percentage variation indication shows that this can be changed? I changed the height and width border percentage to 90%. On playing the clip I find that width and height gradually change back, over the course of the clip, to 85% which is what the border width was originally set at.
Is there some way of stopping this change from 90-85% as this creates movement in the clip?
I've tried the 'Stationary' box both cleared and uncleared with no apparent difference. Incidentally, as this appears to make no difference what does this box actually do?
Your further help would be appreciated.
Regards, Roy.

Trevor Andrew · Post by **Trevor Andrew** » Sat Oct 18, 2008 3:47 pm

Hi Roy

Use the Customise Filter Option

Set the start and end keyframes the same.

Rollason · Post by **Rollason** » Sat Oct 18, 2008 7:13 pm

Hi Trevor.
Thank you for your help and that information. These programmes are supposed to be so intuitive but I guess that I'm lacking in intuition!. However, that works fine, all I have to do now is remember it the next time I need it. The video seems a wee bit jerky now but, hey, I've got rid of the vignette and you can't have everything.
Do you happen to know what the stationary box does?
Cheers and thanks again, Roy.

Trevor Andrew · Post by **Trevor Andrew** » Sat Oct 18, 2008 7:33 pm

Rollason wrote:Hi Trevor.
Do you happen to know what the stationary box does?
Cheers and thanks again, Roy.

You can set the start position, defaults to the middle, but you can drag to one side, the end position can be in a different place, gives the effect of panning.

Stationary
Sets the start and finish in the same place.

Float the mouse over the left panel cross hair for hand sign.

Rollason · Post by **Rollason** » Sun Oct 19, 2008 3:50 pm

Hi Trevor,
Clarified! That's sorted that out.
Something else you might be able to help me with. Somehow I've trimmed one clip, top and bottom about 15% with a black bar. It looks a bit as if I've changed the clip from standard to wide angle by cropping top and bottom. I must have done it somehow whilst I was messing about trying to sort out the crop filter and now I can't remove it.
Can you advise me how to rectify this as I don't have the original clip?
Many thanks for your help. Roy.

sjj1805 · Post by **sjj1805** » Sun Oct 19, 2008 4:11 pm

Unless you have rendered the clip then it is only a virtual clip.
The original video remains untouched. Just go to the clip and edit the filter.

If you have already rendered the clip then it is a new video clip - just as if it had been filmed that way.

Rollason · Post by **Rollason** » Mon Oct 20, 2008 7:46 pm

Thank you Steve for the quick reply.
As stated, the original clip is no longer available therefore I have to work with what I have. Can I open this clip up in some way to change it back to 4:3? I seem to have changed it to what appears to be 16:9. I would like to keep the width but increase the height. There is no filter, as far as I can see that allows me to do this. I've had a look at the tutorials but can find nothing appropriate. Maybe I've missed something.
Many thanks, Roy.

Trevor Andrew · Post by **Trevor Andrew** » Mon Oct 20, 2008 8:38 pm

Hi Roy

As Steve has said, the clip you see in the timeline is only a virtual clip, a thumbnail representing the file on your hard drive.
When we edit the clip in the timeline we do not change the original, only the virtual clip is changed.

First try this.
Click the clip in the timeline.
Select the Attributes tab

You should see a panel showing any Filters used.
Select the filter and hit the ¡¥X¡¦ to remove.

OK

Please right click the clip and select properties,
The properties window shows the file name, this contains the location of the original file saved on the hard drive.
If you cannot read the whole line click with mouse and use keyboard arrow keys to navigate.
Once you locate the file inserting again to the timeline will insert the un-edited clip.

Rollason · Post by **Rollason** » Mon Oct 20, 2008 8:57 pm

Hi Trevor,
I think that I'm confusing everybody on this one. The original has black bars top and bottom similar to a 16:9 clip. How that arose I don't know. I understand that the clip in the timeline is a virtual clip. The problem is with the original which I thought I had corrupted sorting out cropping. I realise that isn't so and that the bars are on the original. Maybe I video'd that clip in 16:9. No way of telling now and it's immaterial anyway.
In effect, I want to change the virtual copy of the original - which has the bars - and open up the virtual copy to a full screen picture. I hope that I'm now making sense.
Is this possible?
Regards, Roy.

sjj1805 · Post by **sjj1805** » Tue Oct 21, 2008 3:29 am

Rollason wrote:....... the original clip is no longer available therefore I have to work with what I have. Can I open this clip up in some way to change it back to 4:3? I seem to have changed it to what appears to be 16:9. .....

You cannot simply change a 4.3 to 16.9 or the other way round.
You have two choices.

1. Stretch.
Here you distort the clip to either become wider (4.3 --> 16.9) or taller ( 16.9 --> 4.3). There are various ways to do this, either use the distort clip button, or place the clip on an overlay track and drag it to the required size.

2. Crop.
Sort of the opposite to the above method. Here you would enlarge the Video so that the video now fills the screen but you lose either the edges (16.9 mode) or the tops/bottoms (4.3 mode)

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