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General >> Discussion >> Rendering bmp to avi
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Message started by looseskrewz on 04/26/07 at 05:16:45

Title: Rendering bmp to avi
Post by looseskrewz on 04/26/07 at 05:16:45

I made a sequence of frames....around 5000.

What do you guys recommend to resize and render them to avi.

As of now they are 1280X1024 (desktop res)

I would probably want them rendered to a 640X480 avi ..or so.

Then I'd like to post it on my web space and send you guys a link. :)

Title: Re: Rendering bmp to avi
Post by abyssoft on 04/26/07 at 06:55:54

640x480 or 512x384 (this would maintain aspect ratio)

Title: Re: Rendering bmp to avi
Post by looseskrewz on 04/26/07 at 07:29:50

Thanks, but what program do you recommend using?

I am not sure what to use.

Thanks

Title: Re: Rendering bmp to avi
Post by abyssoft on 04/26/07 at 09:59:11

wouldn't know I've never done it...closest I've gotten it BMP to ANIgif

Title: Re: Rendering bmp to avi
Post by Tony on 04/26/07 at 11:20:26

I use GIF Construction Set Professional:
http://www.mindworkshop.com/alchemy/gifcon.html

It lets you turn a series of BMPs into animated GIFs or AVIs.

But I don't think it will re-size them for you, so size your Gravity Simulator window to fit.

Also, remember to delete your BMPs after you've constructed your animations.  5000 full screen bitmap images takes up a lot of hard drive space.

I usually use animated GIFs unless they appear too jumpy, as was the case for the Pluto System and the Earth Barycenter animation.  So I used avi for them.  Not everybody's computer will display an avi, so that is something to consider.  See the Simulations link to see those 2 AVIs.

A few tips for making animations:
  • Run your simulation overnight so you don't need your computer for any other purpose.
  • Size your Gravity Simulator window to the size of your final product.
    Start with the sim paused while you set up the Screen Shot feature.
  • If you like you can drag the Time and Date interface on top of the main window and place it in a corner, or even position it so the time hangs over the edge and will not show up in the frames (see my 2002VE68 animation).
  • When you are ready to begin, click on the Gravity Simulator main screen to set it as the active window.  Press the ESC button.  This removes the title bar.  Un-pause by pressing the P button on the Keyboard.  Don't use the ">" button on the Time Step interface, or you will make the Time Step interface the active window when you click it.  Then you will return to find hundreds of images of it instead.

Title: Re: Rendering bmp to avi
Post by looseskrewz on 04/27/07 at 05:34:11

Well, my computer has been running the sim for over 3 whole days now....I have thousands of screenshots at 1280X1024 resolution, taking up about 30 gigs so far.

I guess I will batch process their size in photoshop, and then I will try gif construction set like you recommend.


Thanks for the info.

Title: Re: Rendering bmp to avi
Post by Tony on 04/28/07 at 01:26:11

There's a problem I forsee in shrinking full screen images.  Unless you choose a fat minimum object size in the Preferences menu, what will your resizer do when it shrinks a line that is 1 pixel wide?

You're learning the way I did.  Try it... improve upon it... do it again...

Please post any animations you happen to make.

Title: Re: Rendering bmp to avi
Post by abyssoft on 04/28/07 at 09:09:12

a batch resize followed by a batch edge enhance followed by a batch sharpen should help with the 1 pixel with issue if the resizer uses a smoothing resize (smart resize method).

Title: Re: Rendering bmp to avi
Post by Mal on 04/28/07 at 09:21:56

try pjbmp2avi, it's a lot easier to use:

http://www.divx-digest.com/software/bmp2avi.html#downloads

You just point it to your bmps and then it mashes them together to make an avi. Doesn't do much else, but it works fine and it lets you choose the compression to use (based on what codecs you already have on your system).

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