Thanks Georgia for your time.
The thing is that I have to deliver the audiodescription but noone knows wich format does the Screentalk need. I´ve been given a DVD with TC stamped but with a framerate of 25 ( we are in Europe ).
The only thing I know is that I need to deliver the audio following the film reels wich I don´t have. I talked to the video people and asked for the movie in reels and at 24 frames.
In theory, I have to make the audiodescription match the reels TC so I have to do an audiofile for each reel but I also need to put a beep before the 00 of each TC. I suppose that this might be usual when working with film but I have no clue where I have to place the beep. Don´t know if it´s 10 seconds before the 00 of each reel or where the hell

.
It´s the first time I´m asked to do something like this. The ScreenTalk it´s been discontinued but the cinema is getting a second-hand one with computer and software.
Thanks once again