As to the pronunciation of telecine, it's obviously a combination of tele from television and cine from cinema. In the U.S. (not sure about England, since the Queen's English differs on many words from American English
), the tele from television is pronounced like "tell a" or "tella" (almost a short "a" sound on the second "e"). The same for cine in cinema, in the U.S. it's pronounced "sin a" or "sina" (again a short "a" type of sound is on the "e"). So unless there is specific confirmation from movie industry experts to the contrary (and just about everyone here seems to be saying from everything they've heard that it's definitely not "tele seen"), in the U.S. telecine would be pronounced "tella sina" (with both "e's" after the "L" having a sound similar to a short "a").