My colleague and I attended a conference and made a number of interviews in a crowded hall full of people.
We are completely new to video recording: it was just Panasonic HC-V777 camcorder (~300$) and nothing else. We got great content, great picture and good enough voice of speakers but also a terrible background noise - sometimes the conference room was full of people and that makes it hard now to listen and understand the people on some of our videos.
We are mainly Mac OS X users so we tried iMovie and its "Reduce background noise" with different equalizer presets it suggests. This has some effect on our videos but still the ratio speaker vs crowd is not satisfactory.
We are wondering if there is anything more powerful for this kind of noise reduction - specifically reduction of background noise produced by crowd - tens or hundreds of people talking to each other in a big hall.