What's also ultimately awesome is that you can record HL2 footage right with Steam, without needing to set up complicated recording software like OBS (which is a great recording software and probably more capable than the Steam UI, still I always scratch my head over the settings). This is my first attempt! Probably I could have achieved better quality with OBS, but I must appreciate the simplicity of the Steam UI, so I think there is a trade-off here. Also it is inherently hard to record any good quality footage with my gear, for example I can't get rid of the awful screen tearing in GoldSource games (like the Sven Co-op footages on the same channel).