On the PC I could chop it up with Virtual DUB. It's free but I don't write tutorials on its use.
I created a web site for an artist who exhibits all over the country. I placed all her paintings on the site. She will be sending me an .mpeg which, in addition to video images of her artworks, contains a voice-over interview of the artist describing each of those works.
She wants me to edit the .mpeg so that when the viewer clicks on a painting on her website -- ONLY the portion of that video/interview that concerns that specific artwork will play.
How can I do this? What editing software will I need?