From the NARA footage is seemingly filmed in extra widescreen format
Description in NARA is "Footage From Project Mercury Launch"

I believe footage shows Gemini 11 crew walkout to transfer van, press site
on the launch day, crew training for emergency egress from LC19, the
Gemini 11 Agena prelaunch, footage of the Gemini 11 launch which is
followed by views of a truck (smoke purpose unknown chemical?) and
views of the Apollo/Saturn 500F on launch pad 39A.
Of all the footage I have found on the NARA site, this one is definitly "different".
Comments welcomed on what your thoughts are great footage though!
Audio is NBC radio coverage of the Gemini 11 launch.

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