Situation: the employee decided to flash the documents with a drill and did not check how the discs are located, as a result, he filed the documents and the disks with holes lay on the table. The disks looked like this:

Photo taken from the open spaces, red marked the location of damage. 

We consider the disk number 1, since the approach and implementation are fundamentally different. 

The photograph shows that the damage occurs at the end of the recording, which could be rejoicing if the disk would contain various data, but unfortunately there was only one video on the disk. And of course in a single copy.

Initially, I decided to try to just insert the disc into the drive and read it at low speeds (so that it does not scatter or crack), the 
disc was successfully determined, the video was played, the video was interrupted in half, copying (using various CD recovery programs and similar) was interrupted by 60% of the data, and at the output the video did not even play, none of the players (I will tell you about the players at the end). 

Having tried many programs to repair CDs and DVDs, I stopped at CDCheck. 

Swing CDCheck, start, click Recover.

In the first line, select the Drive \ Disk that is being restored. 
In the second where we will save the results.

According to the settings, if the disc is scratched or rubbed (polish it with toothpaste and everything will work) you can leave the standard, everything is considered as it should. 
In my situation, I put it this way: 
3.1) 5 repetitions before the sector is marked unreadable. 
3.2) 3 repeat reading sector. 
3.3) 30 seconds timeout recovery 
3.4) there is no check mark. 

Click Continue.

And now we forget about the computer and about the disk for a long time, for a very long time. 
Copying has begun, information on reading and copying, as well as speed, will be shown on the right. Errors will be displayed in the lower area.

At the end there will be a window with information about copying and errors.

In my case, a disk with 300MB data, recovered for about 260 hours (where it is 11 days)

Initially, the disc was read at a speed of 32,000 kb / s, constantly decreasing, in my case, at the end of the third day, the speed dropped to 1 kb / s.

The output was a medium quality movie, with artifacts, without ending. 
Managed to recover 90 - 95% of the data.

Restore loudly said, rather successfully copied. 

Players to view damaged video files:

GOM Player - the description says that with the patented function of viewing damaged files, in my case, I was able to view the output file 80% refused to work further.

VLC is also sort of set up to view corrupted files by skipping bad sectors, while watching it stupid and strove to jump large pieces of video.

media player classic - reproduced the entire file, with a single cant not flipping through the video, otherwise stopped playback. 

In the second part I will talk about working in such a situation with Winhex and hot-swappable disk in the drive.