I had trouble getting the video to look righ on my laptop. Everything was just too fuzzy and blurred to make sense tho the cursor did rotate and tilt the picture as it should, just as it does in Google map earth view.
I've been to Goliad's La Bahia presidio and to Fannin Battleground State Park many times and there is a video at La Bahia that show re-enactment of both the battle, subsequent imprisonment and the executions that are quite clear and very impressive.
Evidently, the San Antonio River that flows near La Bahia was much wider and deeper back in 1836 than it is today, as some of Fannin's men escaped execution by jumping and and swimming to safety. Not much more than a shallow narrow creek nowadays.
[This message has been edited by maryjane (edited 03-19-2021).]