A Bronx man punched and Tasered in a caught-on-video clash with police announced plans for a lawsuit Saturday over the fast-escalating sidewalk struggle in which an officer subdued him with a knee on his neck.

“The kind of excessive force they use is unnecessary,” Romaine Francis, 29, told the Daily News. “It would have been a different scenario if there was, like, a weapon involved or any kind of threat to their life.

“I would understand that, but if there’s no kind of things like that, there’s no need for you to use such force against anybody. It doesn’t matter who it is.”

Francis said he “100%” believed his civil rights were violated, adding he was in contact with an attorney and intends to sue the NYPD.

The 35-second video from the evening of April 16 showed four police officers subduing Francis, with two punching the man before he was taken to the ground, Tasered and arrested.

One of the officers used her knee to pin the suspect’s head down against the pavement, and two cops punched the suspect before his arrest, the video showed.

The NYPD said Francis, in a segment of the scuffle not seen on the video, placed his hands around the neck of a female police officer. He was arrested on a half-dozen charges, including assault on a police officer and resisting arrest.

According to Francis, a friend pulled out his cellphone and began recording after seeing police arresting a man on a dirt bike. Francis said he was ordering food in a nearby store when someone came inside to say his friend was getting locked up for interfering with the prior arrest.

When Francis emerged, his pal was already in handcuffs and things heated up.

“I asked him, ‘What’s going on? What happened?’” he recounted inside his home. “And in the midst of him telling me what happened, that’s when the whole commotion started.”

The video showed Francis bumping chests with an officer as the scuffle ensued, with police describing him as approaching the cops in “an aggressive manner.” Francis, in a white sweatsuit and baseball cap, then ignored police orders to back away, the NYPD said.

An NYPD spokesperson said the department was reviewing the incident, though none of the officers involved were shifted to other jobs as of Friday night.

The defendant was held on $20,000 bond or $5,000 cash bail after the confrontation, and released this past Wednesday. His next court date was set for June 1, records show.

“From my perspective, they way (police) go about things, they should not go about things that way,” said Francis. “They should not go about things like that because we’ve had multiple accidents like that before. You know what I’m saying?”