The attendant singled out the video, "Just this one?"
Yan Suizhi stretched out his hand and nodded, "And the first ten minutes and the last ten minutes, three videos are linked together."
The attendant did so bewilderedly. After being picked out in this way, the video playback will be shorter. The staff on duty thought to themselves that since they focused on watching these videos, there must be some details to pay attention to.
So he thought wisely and asked, "What about the playback speed? Do you want to slow it down, or you can zoom in partially. It's just that the effect of partially zooming in on this night vision image may not be so good."
The manager thought of going with him. Hearing that, he nodded and said, "Well, slow down and zoom in a little bit, so that a few guests can take a good look."
In fact, he had already decided in his heart that this young master Qiao had read it wrong. After all, it was normal for a person who had not slept well for a few days to wake up in the middle of the night. But this can't be said by others, so Master Qiao has to read it several times and give up.
The manager stole a glance at Joe, thinking so.
Yan Suizhi said, "No need."
He tapped the playback speed in the corner of the screen, "Turn it to the fastest speed, you don't need to put a part, just pull the panorama."
The staff on duty and the manager looked at each other, but in line with the principle of the guest first, they did so with a dazed face.
The video speed is adjusted to the fastest. At this playback speed, the branches and leaves in the corner of the wall swayed in the wind as if they were cramping, and they swayed twice every once in a while, and then twice after a while.
It was played very quickly, but I still couldn't see any flashes of light in the "sixth room".
Master Qiao gave up, scratched his cheeks and laughed dryly, "That..."
Gu Yan pressed his palm towards him, motioning him to stop talking.
"Huh?" Joe leaned over.
Gu Yanchong said, "Excuse me, please tune up the video in the corridor and play it again, at this speed, with a panoramic view. If it's convenient, go with the video outside the building."
"What's the situation?" Master Qiao, "see what?"
"Maybe." Gu Yan didn't say too much, but he almost understood what Yan Suizhi meant: "I still need to confirm."
Joe: "… "
Whenever he hangs out with these lawyers, Young Master Qiao always suspects that he may be either blind or stupid.
But the person he likes is a lawyer, his best friend is a lawyer, and the person his best friend likes is a fucking lawyer.
He might be under some curse.
The attendant did so again bewildered.
He divided the big screen into two parts, one repeated the three-stage surveillance outside the building just now, and the other broadcast the corridor according to Nursing Yan's intention.
In order to prove that he was not blind, Master Qiao stared intently at the corridor with his arms folded.
Similarly, at the fastest playback speed, the security guards patrolling back and forth became a phantom, and the light in the corridor changed occasionally, but there was still nothing to gain.
Master Qiao concentrated for ten minutes and accepted the cruel fact that he was "really blind".
Yan Suizhi said: "Okay, I understand."
The attendant was taken aback for a moment, and quickly pressed pause.
Yan Suizhi tapped on the screen and said decisively: "In these 10 minutes and the last 10 minutes, one of the two videos is fake."
"Huh?" The manager was taken aback.
Yan Suizhi said, "The light in the corridor is not right."
"What do you mean?" The manager hurriedly asked the attendant to replay the two ten minutes, and found that the light in the corridor was slightly brighter in the middle.
This kind of change is very subtle, and the video is not played fast enough to realize it. Only when Yan Suizhi and Gu Yan require it, can they barely feel the flickering of the light.
Even so, it is still easy to be ignored. After all, normal people's attention is on whether there are suspicious people, and they will not pay too much attention to the light.
Being mentioned by Yan Suizhi, the manager also gave a soft "Huh".
The corridor lights of this hotel are of the same type as most hotels in the alliance. From 9:00 p.m. to 2:00 in the middle of the night is the brightest time. Slowly, often by the time you realize it's darker, it's been a long time.
The process of change is seldom hesitant, silent and smooth.
"Yeah, how do you flash it well, someone moved the light? Is it turned off? Or is it turned on?" The manager realized that this subtle flash of light and dark was crucial, but he hadn't realized what was wrong for a while.
Yan Suizhi greeted the staff on duty, took the playback control button in his hand, and rewinded the video. He snapped the pause button when he repositioned it to that dimly lit spot. This point is right at the point where the second video starts.
"The two paragraphs are repeated," he said.
Some people fill in the monitoring content of the first 10 minutes in the last 10 minutes.
So the light that slowly dimmed silently in the first video will be slightly brighter at the beginning of the second, and then repeat the darkening process that is difficult to discern with the naked eye.
There is no one in this corridor, there is nothing moving, and there is no object to refer to. Except for the few points of the security patrol, the rest of the time is often the still picture all night.
So the people who filled it thought that it would not be a big problem to repeat it for a while. As long as the monitoring time is changed, it will be difficult to be discovered.
But it happened to run into Yan Suizhi and Gu Yan.
"There's more than this." Gu Yan pointed to the video that was being replayed constantly outside the building, "There are also two repetitions here."
He patted Yan Suizhi's hand lightly, took up the playback controller, and took apart the video monitored outside the building. The two videos at 3:00 and 3:10 were placed side by side on the big screen and played from the starting point at the same time.
This is very intuitive, because the time displayed in the left and right videos is different except for the corners. The rest of the pace is exactly the same. The flower tree under the wall on the left twitched twice, and the one on the right also twitched twice.
The lawn on the left was slightly turbulent, and there was also a wave on the right.
Gu Yan turned to Qiao and said, "So you read it right last night."
The blips are not seen because the video where the blips should have been replaced.
The manager was suddenly shocked!
Surveillance video has been changed, this is not a simple matter!
"What should I do?" The manager turned around twice like a fly, with one hand still stroking back and forth on the empty collar.
After a while, he reacted abruptly, pressing the back of the chair and asking the attendant, "You were on duty yesterday?"
How dare the attendant take this pot, and waved his hands repeatedly, "It's not me, it's not me, I took the shift at 6 in the morning, and it was Barry last night."
"Barry alone?" the manager asked, frowning. "Isn't it a rule that you need two on duty overnight?"
He pulled out the screen of his smartphone for work in twos and threes, flipped out the schedule, and said, "Shouldn't it be Barry and Dan last night?"
"Yes, usually two." The duty officer said hesitantly, "But... But occasionally there are special circumstances, so you can ask the team leader for a leave of absence... After all, the monitoring center is not really busy at night."
The manager's face darkened.
The staff on duty quickly explained: "It really only happens occasionally. Usually, the team leader will find someone else to replace him when he asks for leave, and sometimes he just does it himself. But recently, many people have been infected, and the manpower is a bit tight, so... So... Last time, the team leader asked you for instructions, and he said that it is not enough to have only one person at night. You said... First, get over it first, and you are asking the personnel officer to recruit people."
If there is one, there are two. If you can overcome one time, you can overcome the second time.
The manager is not unreasonable either. When I think about it according to the words of the attendant, it seems that there is such a thing. He stood there awkwardly for a while, then scolded himself in annoyance.
"What's the matter? Can you find anyone?" Joe asked.
The manager nodded repeatedly, "Don't worry! Opposite is the staff dormitory. I will call the team leader and ask him to bring Barry over to ask."
He dialed the communication while talking, and as soon as the other side connected, he hurriedly said: "Where? Why was Barry alone in the monitoring room last night? Where's Dan?"
"A rash?"
"Drug addiction?"
"It's all messed up. I don't care where you are now, call me Barry first, and I'll wait for him at the monitoring center. Come with you too!"
Yan Suizhi reminded: "Be low-key, and don't make any noise."
The manager responded and told the unfortunate team leader the same thing.
He hung up the communication, thought about it, and asked the duty officer to re-read the two surveillance cameras. There are three repetitions in this way, two corridors, one from 3:00 to 3:10 in the morning, one from 3:40 to 50, and outside the building from 3:10 to 20.
"So..." the manager said a little hesitantly, "if there is really an unknown person, it's roughly the room that came in a few minutes after 3 o'clock and came out in the forties. Mr. Qiao, the light spot you see—"
"My impression is about 3:10. It's just early, maybe 11 or 12." Joe said.
"Is there any other monitoring angle?" Qiao asked the manager after thinking for a while, "For example, the one with a higher viewing angle, facing the window?"
The manager shook his head, "It's impossible to set up surveillance at that angle. There's no reason to shoot at the guest's window. With all this surveillance, we have to accept some privacy complaints from time to time every year. It's hard to talk about it."
There is a joke that is not a joke. The top three places with the fewest monitoring devices in the league are Wine City, Redstone Star and Decama.
The famous dilapidated land, the famous political center and the famous Pinjin Cave.
No one cares about the former, and the latter two are always stopped by someone to prevent them from pretending.
The manager waited for five minutes with a sad look on his face, received a communication from the team leader, and called out just after hearing a sentence—
"Barry's gone? What do you mean? Not in the dorm?"
He glanced at Yan Suizhi and the others, made another gesture to signal them not to worry, and said to the team leader on the other end of the communication: "Where are the other places, have you seen it? How many times have you contacted the communication? Not once?"
"Look again!"
Five minutes later, there was a knock on the door of the surveillance center.
A man wearing a hotel uniform and the name badge of the monitoring team leader hurriedly entered the door, closed the door with his hands behind his back, and said to the manager with a pale face, "I've searched all over, but I can't find it."