I found another memory card that contained strange footage without an audio track.
Cut to footage. It is night, and Alexa is in a park again. This time, she is walking alone through empty playground; the only light in the picture streams down from the park lights. Alexa walks past a toy truck and a pair of see saws.
She has been walking slowly through the playground thus far, but speeds up once she notices that, despite being alone, something has disturbed the swing set.
A strange blue line tears through the bottom of the picture.
Alexa turns back around. The see saws come back into focus. One of them has been pushed in the opposite direction.
She flips the camera around, and catches a glimpse of the faceless man only a few feet away.
The man runs out of the shot, and Alexa pursues him. He disappears. She swings the camera back and forth widely, zooming in and out on the playground, hoping to catch sight of him.
There is no trace of him. She swings the camera to one side, then back again, before dropping it to her side. The picture cuts to black.
This clip, aside from Entry 1, is the only one I've found that does not have sound.
I am beginning to suspect that Alexa removed the audio herself.
Cut to black. End of entry.
OOC NOTE. Plot, dialogue, and video sourced and adapted from Entry 4 of Marble Hornets on YouTube. Watch at your own risk.