Don't know Editing? or avoid expensive software? Try Envato Placeit for as low as $12.70 per Month, Click here to avail the exclusive 15% Discount
It gives you access to 50,000+ graphics design templates ranging from Intro Templates, Logos, Mockups and Gaming Templates.
One subscription for all your needs and endless possibilities.
Missing files in the template could be either the logo file or footage files that requires quicktime. Install Quicktime player for .MOV errors. Use a YouTube online converter like ytmp3.cc to extract the music from videos if music is missing.