Rotation - highly flexible method from wabu

terrypin wrote on 12/24/2012, 12:15 PM

This follows up on a subject we first discussed a month ago in
http://www.magix.info/uk/movie-edit-pro-2013-how-to-rotate-image.knowledge.891387.html

There's a far better way of handling rotation which wabu has designed. He pointed me to his German tutorial on this and sent me a copy with some English notes. So this post of mine is just to summarise the method. Wabu may wish to add further notes and links.

The essential idea is brilliantly simple. You have your target image which you want to roate (at some non-central point on your screen - otherwise the basic MEP dilaog can do the job). Wabu's ingenious technique is to use a suitable image editor to create a PNG file larger than the target file, typically twice the height or width, and make part of it transparent. Then you can position and size it as appropriate to get the effect you want.

Here's a very simple example, showing how to rotate your target about its hoizontal axis in roughly the top left corner:

Or for better quality: https://dl.dropbox.com/u/4019461/MEP-Rotation-WabuMethod-1.jpg

Or for better quality: https://dl.dropbox.com/u/4019461/MEP-Rotation-WabuMethod-2.jpg

The result can be seen here:

https://dl.dropbox.com/u/4019461/Rotation-WabuMethod.mp4

Obviously the target would normally be over a background image or video. And it could be placed anywhere and its rotation could be around up to 3 axes, or combinations of these.

A highly versatile solution to prizm4's original query. Thanks wabu!

--
Terry, East Grinstead, UK

Comments

wabu wrote on 12/29/2012, 7:54 AM

my english is very limited, sorry...

If someone wants to see, what is possible, look here:

the german tut is here

If someone wants to have it with english notes: let me know - or let terry know.

the same system you may use for a clock, look here.

and YT

best wishes!

johnebaker wrote on 12/30/2012, 8:12 AM

To add to Wabu's method:-

You can also do this with videos by using MEP as follows:

1. Start a new project and import the video you want to rotate about a given point.

2. Adjusting the video size/position only to give the offsets need for the point of rotation.

3. Set the backgound colour to a suitable option to use for chroma key later.

4. Export the video as a mxv file

5. Open the project in which you want to include the rotating video.

6. Import the exported mxv file created in step 4. Make sure you keep this selected

7. Select Effects, Video effects, Chroma key and apply the relevant option to the clip

8. Select Effects, Size / movement, Rotation/Mirror and apply the rotation you require setting the appropriate keyframes.

Here is an example

John

terrypin wrote on 12/30/2012, 8:21 AM

Hi John,

Thanks, very neat!

--
Terry, East Grinstead, UK

cpc000cpc wrote on 1/3/2013, 5:06 PM

Another trick:

4. Export the video as a mxv file ***

5. Open the project in which you want to include the rotating video.

6. Import the exported mxv file created in step 4. Make sure you keep this selected

7. Select Effects, Video effects, Chroma key and apply the relevant option to the clip

*** If you save as filename_green.mxv it will load with green screen effect automatically. Same for any type of file and also works with other colors and with _alpha.