Hi
You may find this video of interest .
from the horses mouth so to speak!
I have myself sometimes used commercial recordings on documentaries and most times have just had to have You tubes adverts on the front .
On one occasion the video was allowed except in Germany, you tube informed me of this and said the post could remain. Without affecting my standing.


http://www.ted.com/talks/margaret_stewart_how_youtube_thinks_about_copyright?language=en

have fun
Mike


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