Air Canada does not currently have PTVs available in Hospitality Service (Economy).
However, there are PTVs onboard all international aircraft in ExecutiveFirst (Business), excluding ex-Canadian Boeing 767-300ERs. On these aircraft, Air Canada passes out DVD players with a selection of DVDs.
Most aircraft (Boeing 747-400, Boeing 767-200ER, Boeing 767-300ER, Airbus A340-300) have something like a 9-channel video system (A340s also have Nintendo video games).
Airbus A330-300s, and all A340s which have joined the fleet since the arrival of the A330s, are configured with the Sony P@ssport system.