flash-cards and start of gif animations

Hello everyone,

I would like to automate the process of creating quick exercises with basic vocabulary for primary school pupils and would like to use Sebastian Rettig's script (https://github.com/sr258/h5p-cli-creator) for creating flash cards. The users are shown animated gifs on which a word is shown for 1.5 seconds and is then no longer legible. A file is attached. Unfortunately, as far as I know, it is not possible to control the start of the animation so that it only begins when the respective flash card is selected. Instead, all animations are started at the same time when the h5p exercise is called. Does anyone see a way to start the animation only when the respective card is called?

Best regards