Re: Star Trek IV: The Voyage Home - Trial view-screen strangeness
ISTR that Vonda McIntyre's novelisation adds a mention that Matz somehow transmitted the footage that the Klingon ambassador shows back to Klingon High Command from the Bird of Prey, before killing himself. Sp on that explanation, the exterior shots of the Enterprise came from the Bird of Prey's log. How the Klingons got the interior shots...
"Some days are better than others. They say that where I come from."
"Loudly, I imagine, on the day you left."
(Blake's 7 - Rumours of Death)