BOSTON -- Gov. Deval Patrick took his effort to block a sales tax increase to a new audience on Tuesday by releasing a YouTube video to rally voters behind his cause.

The governor posted the video on Tuesday morning asking voters to contact legislators and voice their opposition to the sales tax increase, which passed a House vote late on Monday night. The measure would raise the state’s sales tax from 5 percent to 6.25 percent. Patrick, however, has pledged to veto a sales tax increase unless legislators first enact reforms to the state’s transportation, ethics and pension systems.

After working through much of the day to build a consensus behind the sales tax increase, House speaker Robert DeLeo won over a veto-proof majority of legislators in support of the proposal. The House passed the tax increase by a 108-51 vote.

“If someone has a better approach, I’m open to it, but I am unwilling to wait any longer to change the way we do business in state government,” said Patrick.

Earlier this year, Patrick laid out a series of proposals to unify the state’s transportation agencies under a single authority and close loopholes in the pension system. Patrick also proposed raising the state’s gas tax by 19 cents to help fund infrastructure projects and close the state budget deficit.

“Unless we pass these reforms, I will not support a sales tax increase and will veto it if it comes to my desk,” said Patrick.

The governor has indicated that current reform measures being floated in the House and Senate do not go far enough to reshape state government. Patrick estimates that Massachusetts will save more than $1 billion over the next two decades if legislators amend pension benefits and fix the inefficiencies in the transportation system, among other things.

Earlier in the day, Patrick said that he is not “philosophically opposed” to a sales tax increase, and he said that he acknowledges new revenue will be necessary to plug up a growing deficit in the state budget. Patrick said in the video that he favors targeted tax increases to raise revenue for the state, including new fees on soda, candy and alcohol that would help fund public health problems.

Barney Keller, a spokesman for the state Republican party, called Patrick’s video “laughable” and said the governor was engaged in “pathetic political posturing.”

“After the backlash over his gas tax hike and failed appointment of Marian Walsh to a $175,000 hack job, Patrick is desperately trying to repair his battered public image,” said Keller in a statement.