Classification of participant's transmission type


I am using the conference room api.
Currently, it is divided into a participant who transmits video and a participant who transmits only audio.
Participants who transmit only video are displayed on the screen and those who only transmit audio are hidden from the screen.
To distinguish between the two types of participants, a prefix was added before the participant's name to distinguish them.
I am wondering if this is the best way to ask.
Is there a way to check whether the video is coming or only the audio by checking the publish stream?