Results 3 comments of Grzegorz Chlebus

Would also be happy for a patch release please.

I added support for workers running behind a NAT router in this [PR](https://github.com/automl/HpBandSter/pull/82).

Probably your opencv library wasn't built with ffmpeg. Refer to https://github.com/opencv/opencv/issues/8097 Let me know, whether this fixes your problem.