Recently shot a video using a Canon vixia hf400 and the video came out super grainy. I've read that low light can cause grain, but I would classify the lighting as pretty good in this case. I shot the footage in the hallway of an office building almost directly under a fluorescent overhead light.
My spidey sense it's telling me that there's a setting somewhere that's messing things up, but I'm new to video and don't know what settings I should be checking.
Here are a few of the settings I used:
Movie format: mp4
Video quality: 35mbps
Focus assistance: on
Face detection & tracking: on (this was a mistake, and I've since turned it off)
Auto backlight correction: on
Auto show shutter: on
Flicker reduction: off
Image stabilizer: dynamic
Shooting mode: Programmed AE (the camera controls shutter speed and aperture automatically. You can control brightness and other settings.)
That's all the settings I could find that I think might have an impact on the noise/grain level. Any recommendations on what to try first?