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I just checked on the internet and then tested it.  You can use 
imagemagick with a command like:

     convert -delay 1x30 original.gif new gif

the 1x30 is for 1/30th of a second.  You can use things like 10x100 or 
whatever to get the speed you want.


On 11/13/21 8:38 PM, Joe Hourclé wrote:
> I don’t think I’ve created an animated GIF in almost 20 years, so don’t remember what I used back then.
>
> But I know ImageMagick will let you make them, and it’s free.  I just don’t know if it will let you extract the individual frames and/or modify an existing GIFa.
>
> -Joe
>
> Sent from a mobile device with a crappy on screen keyboard and obnoxious "autocorrect"
>
>> On Nov 13, 2021, at 1:02 PM, charles meyer <[log in to unmask]> wrote:
>>
>> Hi my esteemed listmates,
>>
>> I understand GIF is considered by many an antiquated and/or non preferred
>> format.
>>
>> But, I can't open a GIF created by a trusted source with W10 Windows Media
>> Player.
>>
>> I can open it in Irfanview but is there a way in Irfaview to slow the GIF
>> down?
>>
>> If not, has anyone used any free, downloadable GIF viewers which enable you
>> to slow a GIF down?
>>
>> Thank you.
>>
>> Charles.
-- 
*Tim McMahon*
West Liberty Public Library

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