I don't know the story behind this video, so I'm just going to translate what the voices are saying in it.
The narrator:"....(The sender of this film*1) was pushed by someone and fell from the train platform; her injury was so grave that she had to have her little toe amputated. The attacker is unknown. But the face the sender saw, seconds before she fell, looked very similar to the mysterious face that appears in the video. We don't have any information of where this video was taken, or the identity of the couple who were filmed. The image in question apparently comes in when this video about the couple suddenly comes to an end."
The man's voice(at 0:39): "What's this? (He reads the label)Warning, a viper*2?"
The woman's voice: "To have it lying here like this... There got to be people who would want to open it."
The man:"I want to have a look at it. Don't you?"
The woman:"Yes... Oh, but look, it has been sealed by screws."
The man (at 0:50, looking at a tree in front) "Look, there's another one over there. Why did they put it there?"
(The woman says something unintelligible in between)
The man (at 1:04): "Oh, another one over there. It's everywhere."
The woman : "Yeah, that's right."
The man (at 1:10):"That's one great Banyan.*3"
The woman (at 1:25): "You can cross that bridge from here."
The man: "This bridge is quite old, isn't it?"
As I understand it, the "sender" the narrator mentions at the beginning came across this old video by chance; and had the accident sometime after watching it.
1* - I'm just quessing the words here: the beginning of the narration is chopped off.
2* - "viper" The actual name the man mentions is a "habu," a venomous pitviper found in Ryukyu Islands.
3* - Banyan tree. This is a tree also commonly found in Ryukyu Islands.
Judging from the above facts and from what I've heard, the video was apparently taken around the Urasoe Castle, Okinawa, Japan.