Yah really a repeater this close to whatever it is repeating the signal to probably won't help much each repeater adds latency and basically chops the bandwidth in half since they listen for signal half the time and transmit the other half the time, you really want a repeater half way between you and the source if at all (in general better off using directional or patch antenna instead to focus the signal or receiver).
Not sure since I don't have one of those but in general I would just start with the lowest resolution and incrementally bump it up until you see an issue, regarding the formats it saves in there will be more or less work to encoding a video stream depending on the hardware (some GPUs can do some encoding/decoding "natively" like H.264 and so just need the raw data dumped to them, others will use a CPU to grind through the calculations). In general you want to capture with a codec that is fast but not worry so much about file size or really good compression since those things cost CPU time that you typically won't have on a low power chip for "embedded devices".
hello, I bought a xiaomi wifi repeater for my little drone, when I install my wifi smartphone recognizes it, the name of my drone appears, and when I want to connect to the repeater, it can not find the ip address , , an idea? drone wifi and protected