I've noticed lately that Blogger has changed the way it embeds videos from YouTube: it no longer allows videos to extend past the posting area into the sidebar. This is a good thing aesthetically, except Blogger does it in its usual sloppy way: it just cuts off the right side of the video if the video width is greater than 425. A good example is a video Map posted a few days ago. Half of the video is missing (except in feeds, where vids are shown in full width).
To illustrate, I downloaded The Muppets doing their spoof of the movie Pulp Fiction by using the YouTube embed code as shown:
This is the result because the embed code width says 480:
Fortunately, the fix is easy. Note the little blue thingy (technical name: thingy), next to the embed code. Click on that and a whole new world opens to you:
1) The 480 box is highlighted in blue, so just click on the 425 box. The embed code will change.
2) If you don't want all the "related video" crap to muck up your video's ending, uncheck the checked box.
3) This is also the place where you can play around with border colors if you so desire colored borders.
Here is The Muppets video after I adjusted the width:
Since different blog templates have different posting widths, width can be adjusted in the HTML embed code. My template can handle about 440, but I leave it at 425 because, as we used to say in the government, "It's close enough for government work."
Any questions will happily be answered by someone other than myself.