[amalcon]

Some of these video codecs have pathological cases that might be maxing out your video while doing the decoding. If you're only using it as a media server, that might exceed the (possibly age-degraded) capacity of your power supply. Replacing the power supply might help in that case.

It's also possible that something in a particular frame is triggering a bug in your driver and crashing that way. In that case, your best bet might be to transcode the video to a different codec or something.

Maybe your particular video download is from an entirely trustworthy source, but it's not unheard of that untrustworthy folks will modify a file with the intent of causing this to happen.