Jitsi desktop windows video format

Hi, i’m testing in my company video SIp call using Jitsi desktop :

  1. seen that is possible only set only 4:3 format streming video,so in video call on have 2 lateral black bar
  2. some webcam not is recognized from application ( seem that use h264 streaming)

there is way to set jitsi for this 2 item?