VIDEO - Abbotsford Police Road Safety Pedestrian Video
It appears that the Abbotsford Police Department is following the lead of other agencies such as TACVictoria with a no-punches-pulled video reminding drivers to yield to pedestrians and not drive while distracted. It could equally well be used to remind pedestrians to watch for vehicles when they use a marked crosswalk.

If I have a dashcam and capture traffic violations and reported them, is it of any use for police to prosecute? If so does it depend on the level severity? What steps or how much involvement would be required of me? eg. appear in court, just sending a video etc.
Three swings and three strikes, figuratively speaking. This describes my experience making driving complaints to the police. In each case it appears that there was little interest in following up. In fact, one of the complaints was initially refused by the civilian complaint taker.