Gotta be. Camera cuts are 8 seconds or less. Which isn't a universal limit anymore but indicates a cheaper model or plan.

Also things move wierd. Like the stabbing motion with the gun. Or the squid sitting in strange positions instead of "attaching" to the head like you assume it would. In a wierd way I feel like I can almost recognize what films this may have been trained on.

Also over the last month there has been a deluge of ai videos being made from this perspective on this topic. Context is usually biggest evidence, barring everything else.