How to get video in linux meeting sdk recording as i get in normal zoom app

@michael.zoom i subscribed to every user for audio and video in the app and when i try to get there yuv file if a user has not opened his video i get no file for him

so i have 2 questions

  1. shouldn’t i get an empty screen with user initials or profile pic for the time there video is closed
  2. can i get one video which is similar to what a normal user sees in a zoom meeting, i.e., in one video to record entire meeting like onMixedAudioRawDataReceived is for audio files

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