ImageIO - Is video get_reader() fork safe?

Question

I'm using ImageIO's get_reader() function on a video in a context where the process doing this is going to be forked. This reader is then continually randomly indexed (using the get_data method). Eventually, I run into an error imageio.core.format.CannotReadFrameError: Could not read frame -1. If the process is not forked, this error doesn't occur. Is ImageIO's get_reader() not fork safe? Or does my problem lie elsewhere?

Inspan

Could you post the code? – Wastebasket