[mythtv-users] Satip - cannot change Diseqc position

Stephen Worthington stephen_agent at jsw.gen.nz
Thu Dec 1 11:30:05 UTC 2022


On Thu, 1 Dec 2022 11:59:31 +0100, you wrote:

>
>
>> Op 1 dec. 2022, om 11:27 heeft John <jksjdevelop at gmail.com> het volgende geschreven:
>> 
>> 
>>> The MythTv SatIP Wiki states that only one channel (PID) is passed in a full mux stream, and therefore Multirec would not be possible. The protocol however states that multiple PIDs can be selected, and dynamic adding/deletion is supported (without affecting the other PID’s) This would allow Multirec, correct? Described on page 44 and 45 of the document.
>>> 
>>> 
>> Multirec works fine on V32 from SatIP. I often record three channels off a Raspberry Pi hosted dual tuner. Note I statically set the numbers of recordings per tuner to 2. I found dynamic allocation slightly unreliable but that may be just a loading issue on my system. The backend is hosted on a low end NUC.
>
>Understand, it uses a different approach and it works. So no need to complicate things I guess. I’ll be running with 8 physical tuners soon so I foresee no issues there. I was just confused by this statement  " Max recordings: 1 (since the Transponder bouquet the SAT>IP Player sends as MPEG-TS stream to the MythTV backend consists of several programs, but just the tuned to program is filled in with media data) on this Wiki  <https://www.mythtv.org/wiki/SAT2IP_players_as_capture_cards>

That page is the old way of doing SAT>IP before MythTV supported it as
a protocol.  I do mine that way still as it is too much bother to
change over and might not work the same anyway.  The old way uses
MythTV's IPTV tuner type, not the new SAT>IP tuner type.  Each channel
gets an IPTV URL assigned in the iptv_channel table which is an RTSP
URL, but in SAT>IP format.  With SAT>IP tuners, the tuner gets a
SAT>IP URL, and each channel is set up as a normal DVB-S2 or DVB-T
channel (the iptv_channel table is not used).  The channel setup is
done by the normal method of scanning for channels using the tuner.
With the old way, the RTSP URL is a one-liner - that works with
minisatip, but when I tried TVHeadEnd it did not work and required
full SAT>IP protocol where multiple SAT>IP commands are sent in
sequence.

With 8 physical tuners, I forsee no problems recording everything you
want to.  I have an 8 tuner DVB-S2 card running with minisatip using 7
of those tuners (the 8th is used for getting OpenTV format EPG).
MythTV is set up with 5 IPTV tuners connecting to minisatip.  Even
with both my MythTV box and my mother's using those tuners, I have
never had more than 5 physical tuners in use at once and have only
once in the last 5? years had a situation where my MythTV box said it
had to record a programme in a later timeslot due to wanting 6
connections.


More information about the mythtv-users mailing list