Re: How to create an animated gif?

[Gerriet M. Denkmann]

> On 21 Jun 2017, at 23:56, Alastair Houghton  
> wrote:
> 
> On 21 Jun 2017, at 16:09, Jens Alfke  wrote:
>> 
>> On Jun 20, 2017, at 11:17 PM, Gerriet M. Denkmann  
>> wrote:
>>> 
>>> Assume that I have two NSImages, both with the same size, how can I create 
>>> an animated gif which alternates between these two images?
>> 
>> You might have to use a 3rd party image library to do that; I’ve never heard 
>> of animated-GIF (GIF89) encoding being in Mac frameworks.
> 
> Can’t you use ImageIO to do that?  See
> 
> 
> 
> ImageIO definitely supports GIF, and it also supports multi-image file 
> formats; there’s an example of creating an APNG, but I imagine it’ll work for 
> animated GIF just as well.

I found: 
,
 which is similar to the code example in you cited.

Kind regards,

Gerriet.

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Re: How to create an animated gif?

[Alex Zavatone]

Here’s one option.  Imagemagick.

https://www.imagemagick.org/Usage/anim_basics/



> On Jun 21, 2017, at 1:17 AM, Gerriet M. Denkmann  wrote:
> 
> macOS 12.5
> 
> Assume that I have two NSImages, both with the same size, how can I create an 
> animated gif which alternates between these two images?
> 
> Gerriet.
> 
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Re: How to create an animated gif?

[Alastair Houghton]

On 21 Jun 2017, at 16:09, Jens Alfke  wrote:
> 
> On Jun 20, 2017, at 11:17 PM, Gerriet M. Denkmann  wrote:
>> 
>> Assume that I have two NSImages, both with the same size, how can I create 
>> an animated gif which alternates between these two images?
> 
> You might have to use a 3rd party image library to do that; I’ve never heard 
> of animated-GIF (GIF89) encoding being in Mac frameworks.

Can’t you use ImageIO to do that?  See



ImageIO definitely supports GIF, and it also supports multi-image file formats; 
there’s an example of creating an APNG, but I imagine it’ll work for animated 
GIF just as well.

Kind regards,

Alastair.

--
http://alastairs-place.net

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Re: How to create an animated gif?

[Jens Alfke]

> On Jun 20, 2017, at 11:17 PM, Gerriet M. Denkmann  wrote:
> 
> Assume that I have two NSImages, both with the same size, how can I create an 
> animated gif which alternates between these two images?

You might have to use a 3rd party image library to do that; I’ve never heard of 
animated-GIF (GIF89) encoding being in Mac frameworks.

—Jens

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