video width in % and not in px

How can we change this for the site...
instead of px use % for max width of video.

I have responsive site but the width is still fixed for embedded and other videos.

Would this need a lot of coding???

I am having this same problem. I have a responsive template, but the video, photo, sound, etc. units do not change size when the template is resized. I tried switching to 100% in css and I also tried using auto. They do not work. 100% works slightly, but the picture inside the unit gets cut off and it looks bad.

I found the iframe that holds the video or sound block has a fixed with too.
If you change that it works. When I am done with it i put the code change up.

solution for embedded video is to put the width on 100% and the height: auto or fixed as i have at 300px.
Some of the mods have block_youtube.html there is the Iframe width and height set.
Otherwise use FF inspector with FB to find your video or sound or image info for that page.

The standard video block has the % width allready so that doesn't need to change.