Most IPTV problems that people describe as player faults are network faults. The reason is that a stream has to arrive continuously and in order, which is a stricter requirement than most everyday internet use places on a connection. A video call will survive a brief interruption. A live stream will not, because there is nothing to wait for.
This section is about the four quantities that decide whether a network can carry a stream, and how to tell which one is the problem when it cannot.
The four quantities that matter
BandwidthSustained throughput rather than headline speed, and why the advertised figure is the wrong one to plan around.In preparation
LatencyThe delay to the first byte, and why it matters for live streams in a way it does not for on-demand.In preparation
JitterVariation in latency, and the reason a stream with good average latency can still be unusable.In preparation
Packet lossThe hardest one to notice, and the one that most reliably causes playback to stall.In preparation
The connection
Wi-Fi versus EthernetWhere wireless genuinely costs you, and where it makes no measurable difference.In preparation
Home router considerationsBufferbloat, simultaneous household use, and features that sound useful and are not.In preparation
DNSThe component most often mistaken for the network, and how a bad resolver looks like a dead server.In preparation
Network stabilityDiagnosing intermittent loss, and what to check before blaming the application.In preparation
Managed-network concepts
Multicast and group managementHow one stream reaches many receivers, and the group-management protocols involved.In preparation
Quality of serviceWhat prioritisation can and cannot do for a consumer connection.In preparation
Network requirementsWhat a connection genuinely needs to carry a stream reliably.In preparation
A note on specificity: where a guide here states an address range, a port number or a protocol version, that claim needs a specification behind it. This section flags those claims for source review rather than asserting them from memory, and the outstanding items are listed in the sources review.
