Collingwood coach Mick Malthouse has called for the AFL to introduce video reviews of contentious goals following a howler against Geelong in Saturday night's blockbuster at the MCG.

Cats goalsneak Shannon Byrnes was denied a major in the third quarter when he ran into an open goal.

The goal umpire had a clear sight of the action, but ruled Byrnes had overstepped the goal line before he kicked the ball when he clearly had not.

Had Geelong been awarded the goal they would have moved 12 points clear, but Collingwood recovered and won the match by 22.

Geelong coach Mark Thompson said the incident had no bearing on the result, but angry Cats supporters gained an unlikely ally in Malthouse.

Malthouse said there was good cause for technology to be used, and said video reviews on close calls would have no major delay on games.

"It should be able to seen really in the space of, with modern technology, five to 10 seconds and then the answer goes down to the goal umpire, (either) all-clear or a point," he said after Collingwood's 14.23 (107) to 12.13 (85) win.

"I think people would rather a 10-15-second delay and see something right than not see something right."

Tennis, cricket and rugby league are some of the sports that use video technology to review contentious decisions where lines are concerned.

Friday night's game between Essendon and Carlton also featured two incorrect goal-umpiring decisions, when both sides were denied six-pointers.

But Thompson said he was opposed to more officiating in games.

"You've got more interchange stewards, more boundary umpires, more umpires, a ball boy who sits there with a few balls in a box," he said.

"There's a lot of people employed by footy and how much is this (technology) going to cost the game?

"I'd much rather they give more money to the clubs so we can do things a bit easier and a bit better."

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