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Convert multiple BMP into 1 Animated Gif

Jan 12, 2014, 15:22
Post: #1
Convert multiple BMP into 1 Animated Gif
Greetings,

I'm fairly new to GIMP but have a good bit of experience in CG images.

I have 100 BMP images, all the same size ( 508 x 320 ). Is there simple procedure to import these into GIMP and saveas an Animated GIF ?

From what I've read ( via search and the manual ) I getting impression that I must create a layer for each frame and then insert the image. This would be very time consuming.


VirtualDUb has very user friendly interface, but I have problems with final product ( lots of residual artifacts )

TIA -David
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Jan 12, 2014, 16:24 (This post was last modified: Jan 12, 2014 16:25 by rich2005.)
Post: #2
RE: Convert multiple BMP into 1 Animated Gif
That is going to be a big animated gif.

You can add all the images at the same time.

File -> open as layers. Then select all the 100 images

if the layers imported in the wrong order (ie. first is last) use Layer -> stack -> reverse layer order.

Export as a gif, in the dialog choose as an animation.
you probably need to select for 'frame disposal', 'one frame per layer'
and tick 'use disposal method for all layers'.

Those are the real basics but it can but it can get more complicated.

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Jan 12, 2014, 20:18
Post: #3
RE: Convert multiple BMP into 1 Animated Gif
Thank You !

It worked well 1.2 MB which is not bad for my requirements. A little slower than VirtuaDUB. But not much

I will play with frame filters, frame rate etc to see if I can make it a bit more efficient.

Thanks again ! -David
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Jan 13, 2014, 02:13
Post: #4
RE: Convert multiple BMP into 1 Animated Gif
Also experiment with using
"Filters > Animation > Optimize (Difference)..."
or
"Filters > Animation > Optimize(For Gif)..." to reduce file size

100 bmp images is a lot, so maybe also consider taking out some frames to speed up the process.
Sometimes you don't need alot of frames to get a similar animation(depending on what the animation is)

"In order to succeed, your desire for success should be greater than fear of failure." BC
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Jan 13, 2014, 13:12
Post: #5
RE: Convert multiple BMP into 1 Animated Gif
Thank you. I will try the filters.

These are rotations of wireframe 3d models @ 3.6 degree increments @ 100 frames.

We are using 1024x768 BMP images reduced @50% to 512x 384. Normally we would use resize filter with with a high quality parameter. Maybe add a sharpen and increase contrast and a slower frame rate ( 8 FPS )

The smaller the model, the better the results have been so far.

Thank you again. -David
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Jan 14, 2014, 00:33 (This post was last modified: Jan 14, 2014 00:33 by iForStyle007.)
Post: #6
RE: Convert multiple BMP into 1 Animated Gif
(Jan 13, 2014 13:12)David Bethel Wrote:  ...Maybe add a sharpen and increase contrast and a slower frame rate ( 8 FPS )

The smaller the model, the better the results have been so far.

Thank you again. -David

Great you should mention that. When you apply the filters you'll notice an added (100 ms)
That is your frame delays. Before you save the gif, you can adjust the delay globally from the gif save as options.

I've heard good things about GAP (gimp animation plugin) which will give more options for creating a gif, so that's another thing to check out when you have the chance. See ya Smile
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Jan 14, 2014, 13:13
Post: #7
RE: Convert multiple BMP into 1 Animated Gif
Wow ! They sure made that a difficult install.

I haven't succeeded yet but will keep trying. I have always tried avoiding .tar type files. They were nothing but headaches for me.

Thanks! -David
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Jan 14, 2014, 18:15 (This post was last modified: Jan 14, 2014 19:12 by rich2005.)
Post: #8
RE: Convert multiple BMP into 1 Animated Gif
Gimp Amimation Plugin (GAP) has not been updated for some time.

You do not say what OS you are using. However if you are used to using VirtualDub then you are probably using some flavour of M$ Windows.

A better bet than a tar archive for Windows GAP is here
http://photocomix-resources.deviantart.c...-135464357

32 bit, but it will work with a 64 bit windows Gimp installation.

IMHO if you are making many of your wireframe images into animations you should look at other than Gimp, maybe ImageMagick. It is command line but can be as simple as

convert -delay 80x100 *.png(or bmp/jpg..) new.gif

Working in a folder with the video frames (something.png or /bmp/jpg) 12x100 should give around 8 fps - but understand that some web browsers will not honour odd timings - and output to new.gif

Lots of reading here: http://www.imagemagick.org/Usage/anim_basics/

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Jan 15, 2014, 11:11
Post: #9
RE: Convert multiple BMP into 1 Animated Gif
Yes, Unfortunately I use Windoze ( W7 64 bit ) for these processes. I never bit the bullet and invested the time or effort into Unix.

The Gap install uses some download manager that is trying literally take over my machine. I hate that.

I'll look into ImageMagik

Thanks again ! -David
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Jan 15, 2014, 13:09 (This post was last modified: Jan 26, 2014 13:22 by rich2005.)
Post: #10
RE: Convert multiple BMP into 1 Animated Gif
@David Bethel

Things are a bit quiet at the moment, so just to make sure that it does work in Win7 64 bit Wink , a little video demo. 5 mins

having a tidy up - everyone finished with this ...going..going..gone
http://www.youtube.com/watch?v=O3reWIiUr14&hd=1

also shows reducing a video to individual frames, not needed in your case, but might be of interest.

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Jan 15, 2014, 14:04 (This post was last modified: Jan 15, 2014 14:05 by David Bethel.)
Post: #11
RE: Convert multiple BMP into 1 Animated Gif
@Rich
Excellent ! I did get imagmagick installed and did a simple gif compile with the bmp files.

I do like the command line interface. We create the images in AutoCAD using Autolisp ( a variant of common lisp ) This will allow us to create a .bat file that includes all of the pathing and a standard set of parameters. So basically we could automate almost the entire process

Our testing page:

http://www.davidbethel.com/rot

Thank you ! -David
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Jan 15, 2014, 14:10
Post: #12
RE: Convert multiple BMP into 1 Animated Gif
I did finally find the clean download for GAP, The green button leads to a blankty/blank ad filled multiple addon piece of #^$*


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