What is Epilepsy?

1 in 26 people will develop epilepsy at some point in their life.

It affects more than 50 million people worldwide.

Epilepsy is a chronic disorder, the hallmark of which is recurrent, unprovoked seizures. A person is diagnosed with epilepsy if they have two unprovoked seizures (or one unprovoked seizure with the likelihood of more) that were not caused by some known and reversible medical condition like alcohol withdrawal or extremely low blood sugar.

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Photosensitive Epilepsy

For about 1 in 4000 people or 3-5% of people with epilepsy, exposure to flashing lights at certain intensities or to certain visual patterns can trigger seizures. This condition is known as photosensitive epilepsy.

Photosensitive epilepsy is more common in children and adolescents. It becomes less frequent with age, with relatively few cases in the mid-twenties. Many people are not aware they are sensitive to flickering lights or to certain kinds of patterns until they have a seizure. They may never go on to develop epilepsy with spontaneous seizures.

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What is Flikcer?

Flikcer is a web app in the form of a website and chrome extension which aims to resolve epileptic content in videos. Flikcer will provide a measure of how dangerously epileptic a video is, by providing the number of possible triggers for a seizure. It will provide the timestamps for these triggers along with a safer version of the video, free to download.

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How to use Flikcer?

If you want to resolve or test any video on YouTube for possible photosensitive epilepsy triggers, simply copy and paste the url into the text field and simply, click ‘Test’.

If you want to resolve or test any video of your own for possible photosensitive epilepsy triggers, click the ‘Upload’ button and select your video file. Wait for the video to finish uploading to our servers and then, simply, click ‘Test’.

Flikcer will read your video, analyse all frames and detect the triggers. After it has done it’s analysis, Flikcer will output the number of possible triggers in that video. You can now look at the specific time stamps of those triggers by pressing the ‘View Timestamps' button.

If you want to download a safer version of your video, you can click the ‘Create Safe Video’ button. Flikcer will ask for the number of iterations you want it to run. Each iteration removes new epileptic frames that may have been created after removing the previous frames. You can input a number between 1 and 5, Flikcer will run that many iterations. Once the video has been made, you can simply click ‘Download’ to download your safe video.

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Understand Your Result

Flikcer outputs the number of possible triggers in your video. This can be seen as a measure of how dangerous a video is.
Flikcer should mainly be used to make a black and white decision - to avoid or view a video. For example, a short video with 20 triggers should be avoided. A longer video with 5 triggers can still be viewed, with a best practice of skipping 2-3 seconds around the harmful time stamps.
Flikcer does not know what kind of video you are inputting. Therefore, a flicker may actually be a flash of light or a shake of a camera. You should make your decision based on what kind of video the original input is.

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