Preview GIF before exporting

[meetdilip]

Hi, is there any method to preview a GIF before exporting it to a file ?  Also, is there any method transition effects like " dissolve ", " fade " etc while creating GIF ? I am hoping that someone has written a script for the same. Thanks.

[Ofnuts]

Filters>Animation>Playback?

My old "progressive-merge.py" will generate all the layers produced by progressively increasing the opacity of a top layer over a bottom layer.

   

Since it supports layer modes (2.8 style) you can put the top layer in Dissolve mode:

   

[meetdilip]

Thanks. Where can I find "progressive-merge.py" file ?

[rich2005]

Probably the best forum to ask in is GimpChat. I seem to recall some posts about adding transitions to animations. There is the old Gimp Animation Package plugin (GAP) Big learning curve, Neurolurker (sometimes comes here) maintains the plugin.

As always work in RGB mode: Make a transition and add any before / after sequence as a final assembly before going into any indexed mode.

1. Built into Gimp animation section: a blend filter  https://i.imgur.com/G6vWoni.mp4

2. Hands on: using layer groups to add a left to right  'swipe' Make a basic layer group, duplicate,  then all  about using selections   https://i.imgur.com/gihAzkR.mp4 

3. More hands on: A rotating swipe, again using layer groups and masks. https://i.imgur.com/p2YueuV.mp4 Having white / black masks is more efficient than white / white.  
Using another one of ofnuts plugins flatten-groups-0.0.py to collapse the layer groups: 
Where to find them https://sourceforge.net/projects/gimp-to...s/scripts/

Might look labour intensive but for a few layers does not take that long.

[meetdilip]

Thanks, I will try there.

Animation is smoother in the preview. I have 20 frames and GIF playback is running at 10 fps. But when I use cumulative + 100 mS time interval, the animation is not as smooth in the playback.

[rich2005]

(09-21-2020, 10:23 AM)meetdilip Wrote: Thanks, I will try there.

Animation is smoother in the preview. I have 20 frames and GIF playback is running at 10 fps. But when I use cumulative + 100 mS time interval, the animation is not as smooth in the playback.

Needs more frames

[Ofnuts]

(09-21-2020, 09:40 AM)meetdilip Wrote: Thanks. Where can I find "progressive-merge.py"  file ?

Same as the others: http://sourceforge.net/projects/gimp-too...s/scripts/

[meetdilip]

(09-21-2020, 10:28 AM)rich2005 Wrote:

(09-21-2020, 10:23 AM)meetdilip Wrote: Thanks, I will try there.

Animation is smoother in the preview. I have 20 frames and GIF playback is running at 10 fps. But when I use cumulative + 100 mS time interval, the animation is not as smooth in the playback.

Needs more frames

Thanks. How many would be ideal ? It is a simple glitter animation based on 5 images. I made copies with 25 % , 50 % and 75 % opacity. The preview is very interesting

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(09-21-2020, 11:08 AM)Ofnuts Wrote:

(09-21-2020, 09:40 AM)meetdilip Wrote: Thanks. Where can I find "progressive-merge.py"  file ?

Same as the others: http://sourceforge.net/projects/gimp-too...s/scripts/

Thanks. I will get it.

[rich2005]

You might find this one interesting

https://www.gimp-forum.net/Thread-MathMap-for-Linux

[Krikor]

Another option would be to use this service on an online website: 

https://ezgif.com/ as can be seen in this video -> https://youtu.be/f9vhe4_MLUs