I don’t think that is right. I think footage was quickly released to the media but I could be wrong.
In doing a search to try to find out so far all I can come up with is Alex Jones and I don’t trust that.
From what I remember, the videos weren’t available until years later, after people did FOIA requests for them. All I remember being released at the time of the shooting were still photos of the gunmen that were taken before the shooting.