Hi there,
I completed similar tasks in the past, making the desktop sites responsive with Bootstrap.
I am working with Bootstrap / CSS3 / HTML5 on all my projects.
Still, my price offer and time line are approximate because I cannot be very exact without knowing the html source code and complexity of the target website.
Though, if you find my offer interesting I am looking forward to hear more details, especially to view the website that needs to be transformed.
P.S.: If your videos are hosted on your own cdn or server I had previously completed video conversion jobs with ffmpeg to convert flv format videos to html5 formats (.mp4, .webm, .ogv).
Regards,
Calin.