Xecure
You are all right. I tested on a vanilla live-USB on real hardware and it works without any other extra package. I had tested on my main computer, which has lots of dev packages and too much bloat installed (I asumed it worked because of all the other extra packages that video worked) and I wanted to test in on vanilla antiX, but only did so on a few VMs. Now I know it only fails on my VMs.
Sorry for the false alarm. I must have configured something wrong on my end. Video playback works without any problem on real hardware.
antiX Live system enthusiast.
General Live Boot Parameters for antiX.