broken movement in the pan and zoom

tzvi · Post by **tzvi** » Mon May 21, 2007 8:22 am

I have been putting together as a first trial a video composed entirely of still pictures-- an exercise in using the pan zoom function creatively. Its been going fine, but for some reason, the movement of the pan zoom on a couple of the pictures isn't smooth--its a broken, hesitant motion. Why would that be? How could I correct it?

Tzvi

Post by **jparnold** » Mon May 21, 2007 9:59 am

Is the jerky motion in the preview window or the output video?
When you preview video using the preview window it sometimes appears to be jerky. This is usually because your CPU is being worked hard and may be overloaded. Try rendering the video to an output file and then viewing that file and see if the jerky motion still exists. Make sure that your PC is not working too hard by shutting down background processes such as anti-virus programs etc which use resources.
There is an excellent tutorial here on CREATING A VIDEO EDITING PROFILE which shows you how to set up a special log in which does not load processes which are not required when editing. This ensures that the processor is only looking after essential processes.

tzvi · Post by **tzvi** » Mon May 21, 2007 1:28 pm

jparnold wrote:Is the jerky motion in the preview window or the output video?
When you preview video using the preview window it sometimes appears to be jerky. This is usually because your CPU is being worked hard and may be overloaded. Try rendering the video to an output file and then viewing that file and see if the jerky motion still exists. Make sure that your PC is not working too hard by shutting down background processes such as anti-virus programs etc which use resources.
There is an excellent tutorial here on CREATING A VIDEO EDITING PROFILE which shows you how to set up a special log in which does not load processes which are not required when editing. This ensures that the processor is only looking after essential processes.

Hi John,

Thanks for response. The funny thing is that all the other pan zooms of stills before and after work smoothly. It is only these certain pictures that are jerky, and they are jerky in both the pan zoom window and the preview window.

What's an output file?

All the best,
Tzvi

Trevor Andrew · Post by **Trevor Andrew** » Mon May 21, 2007 1:49 pm

Hi tzvi

As you may have noticed John is in Australia, its nearly 2 pm in UK, 2 am in AU, John is probably giving it big ZZZZZZZZZZZ by now.

Anyhow:- what¡¦s the difference between the images used in the jerky pan & zoom to the rest of the images.
Size Type etc.

Are you using a different Pan & Zoom?

Have you applied other filters/effects/transitions to these images

An output file

John is suggesting that you render the project to one file by Share-Create Video File.
This will create a single Mpeg of the project, it should play Ok, as a video file.
You can play this using any media player on your pc.
The render will take a relatively long time.

Regards

Trevor

Post by **jparnold** » Tue May 22, 2007 7:24 am

I forgot to mention that when panning and zooming an image you should use the highest resolution image as possible regardless of the fact that (PAL) DVD video is 720 X 576 (pixels). Difficult to explain but take an image which is 2880 X 2304 and you want to zoom in to an image which is one quarter of the original. You will end up with an image 720 X 576 which is the resolution of (PAL) DVD video and therefore the image will not look chunky (pixelated).
Getting back to your original question (and Trevor's reply - and yes I would have been in "the land of nod") are the images all the same resolution and if not are the images which result in jerky motion lower of higher resolution of the others?

daniel · Post by **daniel** » Tue May 22, 2007 12:16 pm

Just to discard a different problem.

You do not use smart rendering with High Quality playback do you?
And if so you did not perchance EDIT the pan/zoom parameters of the offending pictures?

tzvi · Post by **tzvi** » Tue May 22, 2007 2:13 pm

You suggested making an MPEG of the project. I did it (iPod MPEG-4)When I tried to play it by clicking on it, I got the following message:

"This file does not have a program associated with it for performing this action. Create an association in the Folder Options Control Panel."

I opened Folder Options in the Control Panel, but couldn't find anything that provided an opportunity to "create an association" between the folder and a program.

Any advice?

Thanks,
Tzvi

andywaddell · Post by **andywaddell** » Tue May 22, 2007 3:44 pm

When you say "jerky movement", do you mean that it pans for a bit, stops, then pans again? There are a few of the Pan/Zoom effects that are SUPPOSED to do that.

Trevor Andrew · Post by **Trevor Andrew** » Wed May 23, 2007 9:01 am

tzvi wrote:You suggested making an MPEG of the project. I did it (iPod MPEG-4)When I tried to play it by clicking on it, I got the following message:

"This file does not have a program associated with it for performing this action. Create an association in the Folder Options Control Panel."

I opened Folder Options in the Control Panel, but couldn't find anything that provided an opportunity to "create an association" between the folder and a program.

Any advice?

Thanks,
Tzvi

Hi

The video file should play when using Windows Media Player (providing you have the Mpeg4 codec installed on pc)
Right click the file on the hard drive, select ¡¥Open With¡K Windows Media Player

The file should also play from the VideoStudio library. A thumbnail of the video would have been placed here. Select the thumbnail and press play.

For this test you may have been best creating a normal dvd type mpeg. Select Pal/Ntsc DVD (Instead of a Mpeg4 file)

Another option would be to change the Playback Method for VideoStudio.
Using HighQuality Playback renders the project to temp files, saved in the preview folder.(takes some time)
The project is then played via the files and is usually better quality.

File¡XPreferences¡XPlayback Method¡XHigh Quality¡K.

If these options do not remove the broken, hesitant motion then¡K¡K¡K¡K¡K¡K.

We seem to be creating a big problem for such a small issue.

Regards

Ilene · Post by **Ilene** » Sat Jul 28, 2007 12:38 pm

Hi - I'm experiencing the same issue in VS11+ - getting jerky motion on some pan/zooms on still images. All my images are 720x480 jpgs. I've used the feature in VS9 and 10+ with no issues. I'm used to seeing the jerky motion in the preview window, but it's always clean and smooth when rendered to an mpg. However I've just begun using 11+ and most of the pan/zooms are smooth but some, for an unknown reason are not. I've rendered just those portions, and have changed the pan/zoom parameters but the result is the same. I can't figure out why it jerks or stutters. I even took the same image and rendered a pan/zoom in VS9 and it worked smoothly. My work around was just to import that file into my vs11+ project but this can become cumbersome if it happens too often. I shouldn't have to revert back to older versions of VS, follow the same process and get better results.

By the way - what does the logarithmic setting do? It's checked by default.

thanks
Ilene

GuyL · Post by **GuyL** » Sat Jul 28, 2007 2:23 pm

tzvi wrote:You suggested making an MPEG of the project. I did it (iPod MPEG-4)When I tried to play it by clicking on it, I got the following message:

"This file does not have a program associated with it for performing this action. Create an association in the Folder Options Control Panel."

I opened Folder Options in the Control Panel, but couldn't find anything that provided an opportunity to "create an association" between the folder and a program.

Any advice?

Thanks,
Tzvi

You probably do not have the MPEG4 codec installed. Try saving the file to MPEG2.

Ilene · Post by **Ilene** » Sat Jul 28, 2007 6:31 pm

I just made a regular mpeg ( mpeg2) to burn to DVD. I always convert my project files to mpeg before outputting to DVD. Because of the broken movement I experienced in VS11, I had to revert back to VS 9 to create an mpg for the one image that was jerking in 11+ - I have no explanation for why it jerks in 11+ and works smoothly in 9. This is what I'm trying to figure out.

Again, can anyone explain what the logarithmic interpolation means? It is checked by default in the pan/zoom box.

thanks.
Ilene

Post by **Ron P.** » Sat Jul 28, 2007 9:08 pm

It provides a better quality when recreating the content of the images in each frame. That's not a real accurate description but is the essence of what it does. Leaving it unchecked, and it uses Linear Interpolation.

Wikipedia Interpolation

Wikipedia Logarithm

sjj1805 · Post by **sjj1805** » Sun Jul 29, 2007 1:03 am

Here is another explanation in simple language
Logarithmic Interpolation

Ilene · Post by **Ilene** » Sun Jul 29, 2007 1:44 pm

that's helpful - thanks.

However - I still don't have a explanation/soloution for the jerky motion I'm experiencing with some pan/zooms in vs11. Does VS 9/10 use linear or logarithmic interpolation. I wonder if that has something to do with it, although you would expect the results of log interp to be better.

I have a work around by reverting back to earlier VS versions as I stated in earlier posts, it's just time consuming.

Ilene

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