Why does the video bridge listen to port 443. I want to run nginx with SSL on that port about jitsi-videobridge HOT 5 CLOSED

$ openssl s_client -connect v.apaxo.de:443
CONNECTED(00000003)
write:errno=104
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no peer certificate available
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No client certificate CA names sent
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SSL handshake has read 0 bytes and written 308 bytes
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New, (NONE), Cipher is (NONE)
Secure Renegotiation IS NOT supported
Compression: NONE
Expansion: NONE
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$ sudo service nginx restart
Restarting nginx: nginx: [emerg] bind() to 0.0.0.0:443 failed (98: Address already in use)
nginx: [emerg] bind() to 0.0.0.0:443 failed (98: Address already in use)
nginx: [emerg] bind() to 0.0.0.0:443 failed (98: Address already in use)
nginx: [emerg] bind() to 0.0.0.0:443 failed (98: Address already in use)
nginx: [emerg] bind() to 0.0.0.0:443 failed (98: Address already in use)
nginx: [emerg] still could not bind()
nginx.

org.jitsi.videobridge.TCP_HARVESTER_PORT=4443