2016 GMT: Syria. The discussion continues (see last 2 updates) - Hama Echo offers another blog post that has analyzed videos coming from this artillery site. However, according to the analysis, the second video we've posted is older than the 1st one that claims to have been taken today.
The blog post also analyses what weapons appear to be used, and where those weapons appear to be located. The post focuses on comparing the videos of this camp to the ordinance that has reportedly been used against the city of Homs in the past. It's complicated, but a good read.
Our conclusion? The two videos taken together serve as fairly convincing evidence that shabiha are conducting military operations inside the artillery camp, and are being directly trained by the Syrian military. The evidence is compelling, but not indisputable. The blogger Bjørn H Jespersen offers compelling evidence that the videos show an artillery base in El Waer, Homs, with mortars firing in the direction of the populated city.