I could decode a few of the MDC1200 bursts, but not the one at 0:34. You can try yourself if you have an iPhone, there's an app called "Radio ID" that will decode MDC1200, Fleetsync, GEStar and QC2 paging tones.
No way to know what brand radio it comes from. The patent on the MDC1200 protocol expired a few years back, and most public safety radio manufacturers support it. If you want to know what brand radio they are using, you'd probably do better by searching for photos from that department.