http://www.theblaze.com/stories/2015/03/25/man-thought-he-had-to-worry-about-people-stealing-his-packages-but-was-surprised-by-what-he-caught-a-mail-carrier-doing-on-camera-instead/ Videos will not play
I can reproduce with nightly r181958. Works in shipping Safari 8.0.4; I didn't attempt to bisect.
<rdar://problem/20305511>
*** This bug has been marked as a duplicate of bug 142888 ***