[nerdy]

There are two YouTube links, from the SpaceX page:

SpaceX webcast will go live here and on YouTube at about 1:15pm ET/10:15am PT. For our full hosted webcast, use this link https://www.youtube.com/watch?v=ivdKRJzl6y0 For views of rocket, launch countdown audio and telemetry info, use this link: https://www.youtube.com/watch?v=vkz_lclGXNg

[harshreality]

The spacex.com video page uses livestream which seems to require flash for desktop browsers.

Easiest fix would probably be to embed the youtube video instead.