Audio and video of ice and desc in webrtc are described separately. Does it mean that audio and video of webrtc are two streams in ice protocol?

I am developing webrtc software. I found that ice, audio and video returned by webrtc are separate, and audio and video are also separate in sdp. Does it mean that webrtc audio and video are two different streams?

or do I misunderstand, is it one stream, two component?

Jun.08,2021
MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
MySQL Error : Disk full (/tmp/#sql-temptable-64f5-1e5096f-656de.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1e5096f-656de.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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