They really have no choice but to provide it, if the defense attorney subpoenas for it, but public defenders often don't do a good job defending people, and the dashcam evidence suspiciously often goes missing or broken.
What I meant is that the OP would have plead not guilty and then had their lawyer file the request as part of discovery to see if any dashcam or bodycam footage was available. Believe me, I have no expectation that they would review this naturally themselves and offer up evidence of officer wrongdoing (even though these people swore an oath to do exactly that).