How to make a 1-hour gif using Python?

Question

I want to make an 1 hour - long gif which will consist of 60 frames.

I already have built a gif_making function using PIL:

      sortedFiles = sorted(glob.glob('*.png'),key=os.path.getmtime)
      sortedFilesBackwards = sorted(glob.glob('*.png'),key=os.path.getmtime, reverse= True)

      full = [] + sortedFiles[:-1] + sortedFilesBackwards[:-1]
      frames = [Image.open(image) for image in full]
      
      frame_one = frames[0]
      frame_one.save(f"{units}{fileName}.gif", format="GIF", append_images=frames,
                  save_all=True, duration=12000, loop=0)

However, when I set the duration = 360 000 (milliseconds = 1 hour), I receive the following error:

struct.error: ushort format requires 0 <= number <= (32767 *2 +1)

I work on macOS.

P.S : I think it has something to do with the maximum amount of data within a struct ?

score 1 · Answer 1 · answered May 01 '22 at 15:41

1

The duration is how long to display each frame for in milliseconds, so you need to set it to 1,000 for each frame to be displayed for a second.

Or set it to 30,000 for each frame to be displayed for 30 seconds and double up your frames.

answered May 01 '22 at 15:41

Mark Setchell

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still, even if I set the duration = 60.000 (60 seconds), I still get the error – NiceBro May 01 '22 at 15:55
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That's why I suggested 30,000... because it is less than 32,768. – Mark Setchell May 01 '22 at 16:00
that did work. As a conclusion: there is a duration limit of 32 seconds per image ? – NiceBro May 01 '22 at 16:02
@NiceBro so instead of 60 frames you will have 120, where the odd frames are exact duplicates of the preceding even one. – Mark Ransom May 01 '22 at 16:02
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@NiceBro the limit probably comes from the GIF format itself. It's the largest value you can put into a signed 16-bit field. – Mark Ransom May 01 '22 at 16:03
in that case, I would have to rewrite the sorting and create duplicates – NiceBro May 01 '22 at 16:06
Duplicate list like this https://stackoverflow.com/a/14878621/2836621 – Mark Setchell May 01 '22 at 16:13

score 0 · Answer 2 · answered May 01 '22 at 15:33

0

Set FPS value when you saving your GIF For example:

ani.save('animation.gif', fps=3)

The value you set will lengthen or shorten your gif

answered May 01 '22 at 15:33

Pitermaniak

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That doesn't work. I want to 1 frame per Minute. – NiceBro May 01 '22 at 15:36
What if you set fps to fps = 1/60? – Pitermaniak May 01 '22 at 15:38
It didn't work. – NiceBro May 01 '22 at 15:47

How to make a 1-hour gif using Python?

2 Answers2