Understand an gif is animated or not in JAVA

Question

I have a gif image and I would like to be able to detect whether the gif is an animated gif or not using JAVA. This question is about detection rather than displaying the gif.

I see that MIME type of animated gif isn't different of static gif.

How I can do it?

Possible duplicate: http://stackoverflow.com/questions/2935232/show-animated-gif-in-java — bknopper, Mar 06 '14 at 10:25
You should be able to manually parse the file header. Have a look at [this thread](http://www.velocityreviews.com/forums/t146605-identifying-animated-gifs.html). — Robin Krahl, Mar 06 '14 at 10:29
@bknopper not a duplicate as this question is not about showing, but about detecting an animated GIF. — Robin Krahl, Mar 06 '14 at 10:30
@bknopper: Robin Krahl is right, I don't want to show it, i want to detect it, before asking this question i see the another one you mentioned but doesn't help. — Seyed Mohammad Chavoshian, Mar 06 '14 at 10:36
ok, the question is a little bit ambiguous :P I proposed an edit. — bknopper, Mar 06 '14 at 10:39
The question is not properly spelled but also not ambiguous: "understand" is very different from "display" — Clint Eastwood, Oct 13 '15 at 20:11

score 11 · Accepted Answer · answered Mar 06 '14 at 10:43

11

You need an ImageReader. if size is 1 its not animated, everything above is animated. Check this out:

public Snippet() {
        File f = new File("test.gif");
        ImageReader is = ImageIO.getImageReadersBySuffix("GIF").next();  
        ImageInputStream iis;
        try {
            iis = ImageIO.createImageInputStream(f);
            is.setInput(iis);  
            int images= is.getNumImages(true);
        } catch (IOException e) {
            e.printStackTrace();
        }  
}

answered Mar 06 '14 at 10:43

Klemens Morbe

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6

I'd just recommend closing the stream in a `finally` block, to add completeness to the answer. – Simeon Mar 06 '14 at 10:48
1

or doing like this: ``try(ImageInputStream iis = ImageIO.createImageInputStream(f) {`` when using Java > 6 – Luís Guilherme Oct 20 '15 at 19:38

Understand an gif is animated or not in JAVA

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