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Some delivery resources can be cached, while live playlists and access-controlled media need careful freshness rules. A viewer's refresh is not a command to rebuild the original source. Persistent stale content may require an operator-side correction.
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With unicast delivery, each client receives its own stream connection. Multiple household screens therefore add network demand even when they show the same programme. The service's simultaneous-session allowance remains a separate account rule.
Explore guide ↗IGMP helps manage IPv4 multicast group membership. It can matter for a managed multicast television service, but it is not a universal performance switch for internet video. First establish whether the service actually uses multicast on the home network.
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TCP can recover missing data by retransmission, but recovery takes time. A stream may continue through small disruptions while its buffer lasts, then pause if delivery falls too far behind. Smooth playback does not mean the network never lost a packet.
Explore guide ↗UDP does not itself provide TCP-style ordered reliable delivery. Applications using it must handle their own needs for timing, recovery or concealment. That can make loss appear differently, but the actual result depends on the media protocol and player.
Explore guide ↗HTTP versions change how requests are transported and managed, but applications and servers usually negotiate supported behaviour. A viewer normally does not need to force a protocol version to watch video. Investigate visible errors before changing advanced settings.
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