visualweber/gif-frame-extractor

PHP class that separates all the frames (and their duration) of an animated GIF

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GifFrameExtractor

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GifFrameExtractor is a PHP class that separates all the frames (and their duration) of an animated GIF, _(*1)

For what ?

The class helps you to separate all the frames of an animated GIF, for example to watermark them and then to generate a new watermarked and animated GIF., _(*2)

Usage

GifFrameExtractor is really easy to use:, _(*3)

1 - Extraction:, _(*4)

$gifFilePath = 'path/images/picture.gif';

if (GifFrameExtractor::isAnimatedGif($gifFilePath)) { // check this is an animated GIF

    $gfe = new GifFrameExtractor();
    $gfe->extract($gifFilePath);

    // Do something with extracted frames ...
}

2 - Getting the frames and their duration:, _(*5)

foreach ($gfe->getFrames() as $frame) {

    // The frame resource image var
    $img = $frame['image'];

    // The frame duration
    $duration = $frame['duration'];
}

You can also get separately an array of images and an array of durations:, _(*6)

$frameImages = $gfe->getFrameImages();
$frameDurations = $gfe->getFrameDurations();

And obtain usefull informations:, _(*7)

$totalDuration = $gfe->getTotalDuration(); // Total duration of the animated GIF
$frameNumber = $gfe->getFrameNumber(); // Number of extracted frames
var_dump($gfe->getFrameDimensions()); // An array containing the dimension of each extracted frame
var_dump($gfe->getFramePositions()); // An array containing the original positions of each extracted frame inside the GIF

Option:, _(*8)

You can choose if you want to get the original frames (with transparency background) or frames pasted on the first one with the second parameter of extract() method:, _(*9)

$gfe->extract('path/images/picture.gif', true); // Can get transparency orignal frames

This option is false by default., _(*10)

About

The class reuses some part of code of "PHP GIF Animation Resizer" by Taha PAKSU (thanks to him)., _(*11)