[vlc-devel] Re: PTS is out of range (), dropping buffer, late picture skipped

gbazin at altern.org gbazin at altern.org
Thu Jul 24 13:47:13 CEST 2003

> Gildas, you think this is a server of vlc related problem
> and if so should I report this to VLC-bugzilla?

IMHO this is due to a badly designed server.
MPEG TS packets have only 1 sync byte (to keep the overhead low) so it is highly uneasy/inefficient to synchronise on TS streams.

This is why udp packets should only contain an integral number of TS packets (RFC2250 "RTP Payload Format for MPEG1/MPEG2 Video" already mandates that for instance). That way the client can easily synchronize to the stream as it knows where the beginning a TS packet is (even when packet loss happen).

The server already handles TS packets anyway so it wouldn't require much to ensure it outputs an integral number of TS packets in a udp packet.

BTW, anybody knows if there is a spec for raw MPEG TS over udp ?

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