startVideoMuted and startAudioMuted options in initJitsiConference(name, options)

We have startVideoMuted and startAudioMuted options in initJitsiConference(name, options) call in lib-jitsi-meet. I tried to set them to true and but I’m not able to start my conference with muted audio/video. Even after creating the room, I tried to use setStartMutedPolicy() to set the policy, still it is not working. I know a crude way to stop audio and video to call explicit mute() function on track itself. But still I want to know what is use of startVideoMuted and startAudioMuted options in initJitsiConference(name, options) call.

Thank you.

Thank you sir for so quick response.

Yes I got its meaning now.