The scenes are tense, they all look worried, even Strider, who is leading them through the deep crags and dark forest. Suddenly Pippin returns screaming. I'd then perhaps add the meeting of Glorfindel here, instead of a little later. The party would be sitting under the shadow of the Trolls eating food when horses' hooves could be heard. We'd have a tight close up on everyone's face, and their eyes, they are frightened, meanwhile the hooves are getting louder and louder.
Strider tells everyone to hide.
They dash deeper into the woods, Frodo, very sickly, moves his head to look in the direction of the hooves, Sam keeps close to him. We see a tight shot of the road, nothing, no sign of anything. The sound of the hoves almost seems to stop when suddenly something bursts out from the bushes, everyone crouches down and turns the other way. Strider leaps up and runs to greet his friend, the Hobbits are confused, and wary, they stay crouched behind the bushes. Frodo is persuaded to ride Glorfindel's horse and the trek continues with a new hastiness.