Windows Media Player is a flaming pile of shit.
Trying to copy notes from a webinar, and every time I press the pause button in WMP the video keeps playing for another couple of seconds. When you add to this the fact that it takes WMP a couple of seconds before it will start the video again when I'm trying to click on the bar to seek, the tooltip on the bar is "Seek" rather than the time it's going to jump to when I click it, and the fact that there's no x0.5 or x2 or any other speed control but a jerky skiptastic fast forward button, it all adds up to an enormous hassle.
This is turning a task that SHOULD have taken a bit more than 30 minutes (the length of the video) into something I've spent the whole morning on. Good going folks!
After failing to get it to work in MPC or VLC, I managed to get it working in mplayer, but apparently it's only seekable to the nearest 5 minutes or so in there, which probably means that the g2m4 codec put next to no keyframes in the video. But at least mplayer has speed control so I can cover the ground I've already covered quickly, and when I press the space bar it stops immediately.