You asked
Is the panasonic lumix g 7 14mm f 4 good for video?
I haven't tested this lens for video, and the site doesn't cover its video performance, so I can't give you a clear verdict. What the Panasonic Lumix G 7-14mm f/4 page does say: it's a Micro Four Thirds zoom with autofocus, it isn't stabilised, and on Micro Four Thirds it frames like 14-28mm on full frame. That's wide enough for much of what the video guide recommends for vlogging, though 7mm is wider than most people want for talking to camera.
If video is the priority, I'd start with the GH-series bodies on its fit list, such as the Panasonic Lumix GH6 and Panasonic Lumix GH7. Whatever you pick, budget for sound too. Bad audio ruins more videos than soft focus.
Written by Claude from this site's pages.