Tuning rpiCAM frame rate and bitstream settings

[leeprevost]

Question

I've noted that mediamtx asks for several inputs to the rpicam configuration. Having experience with rpicam, libcam, and picamera2, I've noted those packages tune the encoder bit rate based on selected frame rate as well as quality inputs. But, medimatx asks for each of them separately.

I'm trying to get an 800x600 with at 30fps frame rate and average to medium high quality compression. Do I also need to set bitrate if what I assume the handlers handle for us behind the scenes?

Should I assume all of these are default arguments into picamera2 or some other handler?

Relevant config settings:

# Sensor mode, in format [width]:[height]:[bit-depth]:[packing]
  # bit-depth and packing are optional.
  rpiCameraMode:
  # frames per second.
  rpiCameraFPS: 30
  # Autofocus mode (auto, manual or continuous).
# Codec (auto, hardwareH264, softwareH264 or mjpeg).
  # When is "auto" and stream is primary, it defaults to hardwareH264 (if available) or softwareH264.
  # When is "auto" and stream is secondary, it defaults to mjpeg.
  rpiCameraCodec: auto
  # Period between IDR frames (when codec is hardwareH264 or softwareH264).
  rpiCameraIDRPeriod: 60
  # Bitrate (when codec is hardwareH264 or softwareH264).
  rpiCameraBitrate: 5000000
# M-JPEG JPEG quality (when codec is mjpeg).
  rpiCameraMJPEGQuality: 60