有些频道，不添加FCC，播放没有任何问题。若请求时添加FCC地址，会出现No data received for 1 seconds, closing connection。
因为上海电信有多个FCC，如果换其他FCC，这个频道又没问题了。
软件版本： 3.13.5
2026/06/20 00:16:36 INFO [Worker 0] Service matched: 上海/上海教育HD
2026/06/20 00:16:36 INFO [Worker 0] FCC: Using Telecom/ZTE/Fiberhome FCC protocol
2026/06/20 00:16:36 INFO [Worker 0] FCC: Unicast stream started successfully
2026/06/20 00:16:38 INFO [Worker 0] Multicast: Successfully joined group
2026/06/20 00:16:39 ERROR [Worker 0] Multicast: No data received for 1 seconds, closing connection
有些频道，不添加FCC，播放没有任何问题。若请求时添加FCC地址，会出现No data received for 1 seconds, closing connection。
因为上海电信有多个FCC，如果换其他FCC，这个频道又没问题了。
软件版本： 3.13.5
2026/06/20 00:16:36 INFO [Worker 0] Service matched: 上海/上海教育HD
2026/06/20 00:16:36 INFO [Worker 0] FCC: Using Telecom/ZTE/Fiberhome FCC protocol
2026/06/20 00:16:36 INFO [Worker 0] FCC: Unicast stream started successfully
2026/06/20 00:16:38 INFO [Worker 0] Multicast: Successfully joined group
2026/06/20 00:16:39 ERROR [Worker 0] Multicast: No data received for 1 seconds, closing connection