You tube suggests that longer is better according to the algorithms used to show number of our monthy views by time amounts they watch.
However like Dr.Ernst North East Iowa Community College Calmar,Iowa use to say humans prefer periods near thirty minutes to longer.
The copywrite times seem to get over look when time on a program of less then three minutes unless the program in produced by the BBC or ACORN. Trying to summit documentation from those outlits get the media headed off at the past allowing it never to air.Excusess given maybe with different music.
I have gound if I have to split a chapter and the end of the chapter is less twenty nine minutes like seven to fifteen people will hear the end not earing the first part which hits me as foolish.
I found a reader the other day who reads the whole hog as it were. Its not the numbers of people who start to hear its those that hear every bit that matters.I would never start a song then stop half way through would you?