A HandBrake preset applies track selection rules to each source
Audio and subtitle defaults describe selection behaviour. A saved preset does not establish that every new source contains the same language or commentary track.
The journal
The viewing journal — page 60
Practical reading about streaming, devices and the decisions behind a better prepared setup.
A 169.254 address needs a different check from a normal router lease
IPv4 link local addressing can support communication on one link. It is not a normal routed internet address supplied by a home DHCP lease.
An IPv6 unique local address can be routed within a site
Unique local IPv6 addressing is different from link local scope. A local address category does not always mean communication is confined to one physical link.
An HTTP alternative service has its own freshness lifetime
Alt-Svc caching is separate from DNS TTL and page response caching. A connection endpoint can need more context than a fresh DNS lookup.
A client can upgrade an HTTP URL using an HTTPS DNS record
RFC 9460 specifies secure upgrade behaviour for compatible HTTPS DNS records. That can be distinct from receiving an actual redirect response from the HTTP server.
QUIC can preserve a connection across an address change, with conditions
QUIC connection migration can accommodate endpoint address changes. It still requires supported behaviour and path validation, so it does not guarantee uninterrupted viewing.