A former police officer was convicted on Thursday of lying about a collision with a bicyclist who was taking part in a Critical Mass ride in Times Square in 2008 — an altercation that was videotaped and became a viral presence on the Internet.

The jury found the officer, Patrick Pogan, 24, guilty of filing a criminal complaint that contained false statements concerning the cyclist, Christopher Long, including an assertion that Mr. Long knocked Mr. Pogan down by intentionally steering his bicycle into him. (The video showed that Mr. Pogan remained on his feet, while Mr. Long flew to the pavement.)

Mr. Pogan’s conviction carries a maximum sentence of four years in prison.

Mr. Pogan, who resigned from the Police Department after the episode, was also convicted of a misdemeanor for attesting to the complaint’s truthfulness, even though it contained a warning against making false statements.

But Mr. Pogan, who was in his 11th day on the force when the collision happened, was acquitted of a misdemeanor charge of reckless assault.