The prosecution claimed 24-year-old Halsall, described as the whipper-in, was on horseback as the eyes and ears of the hunt in the Idlicote area of Warwickshire.
The magistrates’ court was shown bodycam video taken by Rebecca Forrester from Three Counties Hunt Saboteurs, which showed her trying to get between the fox and the hounds, but the fox was quickly killed by the dogs.
Halsall, from Shipston-on-Stour in Warwickshire, had told the court he had been asked to help with a trail hunt but had not been involved in its organisation.
He said he believed he had found himself a good spot to observe and believed it was going to plan until the fox emerged.