Mailing List Archive: streaming latency problem

streaming latency problem

Jun 9, 2003, 5:04 AM

Post #1 of 7 (1593 views)

Hi there,

sine I got no replies to my last posting, I am trying to formulate my
problem again.

I am running mythbackend and mythfrontend on different machines.
Mythbackend runs on a server using a PVR 350 for capturing. The client
is a nice MSI barebone that sits next to my TV. Watching live TV works
fine, however browsing and watching recordings gives me some headache.

Browsing from one recording to another takes up to one minute or even
freezes the whole frontend. When I manage to start the playback it works
fine however. The network is stable, the routing and the firewall
settings are correct. It looks like some deadlock or timing problem.

Running the frontend on the server itself doesn't show this behaviour.
Browsing and playing the recordings works smooth here.

Any ideas what might cause my problems?

Thanks for any tip you might give.

Ralf

Re: streaming latency problem [ In reply to ]

ken at bizrace

Jun 9, 2003, 6:45 AM

Post #2 of 7 (1582 views)

Permalink

I am experiencing the same thing only I have been assuming it was related to my
wireless network. Once it starts play it works well, but does have some seek
problems when FF or skipping commercials. Mythfrontend hangs about 4 out of 5
tries to watch a recording. Sometimes it even hangs will browsing the list of
recordings before attempting to watch. Maybe I have been barking up the wrong
tree.

--Ken

Quoting Ralf Haller <ralf@brap.de>:

> Hi there,
>
> sine I got no replies to my last posting, I am trying to formulate my
> problem again.
>
> I am running mythbackend and mythfrontend on different machines.
> Mythbackend runs on a server using a PVR 350 for capturing. The client
> is a nice MSI barebone that sits next to my TV. Watching live TV works
> fine, however browsing and watching recordings gives me some headache.
>
> Browsing from one recording to another takes up to one minute or even
> freezes the whole frontend. When I manage to start the playback it works
> fine however. The network is stable, the routing and the firewall
> settings are correct. It looks like some deadlock or timing problem.
>
> Running the frontend on the server itself doesn't show this behaviour.
> Browsing and playing the recordings works smooth here.
>
> Any ideas what might cause my problems?
>
> Thanks for any tip you might give.
>
> Ralf
>
> _______________________________________________
> mythtv-users mailing list
> mythtv-users@snowman.net
> http://lists.snowman.net/cgi-bin/mailman/listinfo/mythtv-users
>
>

--
Ken VanDine
biZrace Inc.
http://www.biZrace.com
kvandine@biZrace.com

Re: streaming latency problem [ In reply to ]

ijr at po

Jun 9, 2003, 7:53 AM

Post #3 of 7 (1597 views)

Permalink

On Monday 09 June 2003 08:04 am, Ralf Haller wrote:
> Running the frontend on the server itself doesn't show this behaviour.
> Browsing and playing the recordings works smooth here.
>
> Any ideas what might cause my problems?

Just turn off the video previews and turn on preview images instead, for now.

Isaac

Re: streaming latency problem [ In reply to ]

ken at bizrace

Jun 9, 2003, 9:14 AM

Post #4 of 7 (1570 views)

Permalink

I have both turned off. I think it is intermittently timing out trying to
connect to the master. Maybe allow a little extra time to connect?

--Ken

Quoting Isaac Richards <ijr@po.cwru.edu>:

> On Monday 09 June 2003 08:04 am, Ralf Haller wrote:
> > Running the frontend on the server itself doesn't show this behaviour.
> > Browsing and playing the recordings works smooth here.
> >
> > Any ideas what might cause my problems?
>
> Just turn off the video previews and turn on preview images instead, for
> now.
>
> Isaac
> _______________________________________________
> mythtv-users mailing list
> mythtv-users@snowman.net
> http://lists.snowman.net/cgi-bin/mailman/listinfo/mythtv-users
>
>

Re: streaming latency problem [ In reply to ]

calvin at houstonns

Jun 9, 2003, 10:49 AM

Post #5 of 7 (1589 views)

Permalink

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

Shouldn't you be using 100mbit instead of wireless with this kind of setup?

On Mon, Jun 09, 2003 at 12:14:54PM -0400, Ken VanDine wrote:
> I have both turned off. I think it is intermittently timing out trying to
> connect to the master. Maybe allow a little extra time to connect?
>
> --Ken
>
>
> Quoting Isaac Richards <ijr@po.cwru.edu>:
>
> > On Monday 09 June 2003 08:04 am, Ralf Haller wrote:
> > > Running the frontend on the server itself doesn't show this behaviour.
> > > Browsing and playing the recordings works smooth here.
> > >
> > > Any ideas what might cause my problems?
> >
> > Just turn off the video previews and turn on preview images instead, for
> > now.
> >
> > Isaac
> > _______________________________________________
> > mythtv-users mailing list
> > mythtv-users@snowman.net
> > http://lists.snowman.net/cgi-bin/mailman/listinfo/mythtv-users
> >
> >
> _______________________________________________
> mythtv-users mailing list
> mythtv-users@snowman.net
> http://lists.snowman.net/cgi-bin/mailman/listinfo/mythtv-users
>
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.2.0 (FreeBSD)

iD8DBQE+5Mi91CCG53ZaRNYRAnX8AJ9AvTX5uWgj52lCsFvWjJECyrv38QCdG0qf
fAtSOItevbu7TMFYJISOM4E=
=bZxs
-----END PGP SIGNATURE-----

Re: streaming latency problem [ In reply to ]

ralf at brap

Jun 9, 2003, 11:57 AM

Post #6 of 7 (1592 views)

Permalink

I am using a 100MBit direct connection and are experiencing these
timeouts. It can't be due to the bandwidth.

I checked the network traffic with iptraf and during these latency times
there is no traffic between the frontend and the backend at all. The
problem must be within the protocol (timeout, deadlock?).

Ralf

Ken VanDine wrote:

>Not really, it works well while streaming (except seeking). The real problem
>is it seems to timeout while trying to connect to the backend in the playback
>screen. I have noticed an overall latency increase since I moved the frontend
>down stairs. Until last week it was in the same room as the access point and
>it worked great, not a single complaint.
>
>--Ken
>
>
>Quoting Calvin Gorriaran <calvin@houstonns.com>:
>
>
>
>>-----BEGIN PGP SIGNED MESSAGE-----
>>Hash: SHA1
>>
>>Shouldn't you be using 100mbit instead of wireless with this kind of setup?
>>
>>
>>On Mon, Jun 09, 2003 at 12:14:54PM -0400, Ken VanDine wrote:
>>
>>
>>>I have both turned off. I think it is intermittently timing out trying to
>>>
>>>
>>>connect to the master. Maybe allow a little extra time to connect?
>>>
>>>--Ken
>>>
>>>
>>>Quoting Isaac Richards <ijr@po.cwru.edu>:
>>>
>>>
>>>
>>>>On Monday 09 June 2003 08:04 am, Ralf Haller wrote:
>>>>
>>>>
>>>>>Running the frontend on the server itself doesn't show this
>>>>>
>>>>>
>>behaviour.
>>
>>
>>>>>Browsing and playing the recordings works smooth here.
>>>>>
>>>>>Any ideas what might cause my problems?
>>>>>
>>>>>
>>>>Just turn off the video previews and turn on preview images instead,
>>>>
>>>>
>>for
>>
>>
>>>>now.
>>>>
>>>>Isaac
>>>>_______________________________________________
>>>>mythtv-users mailing list
>>>>mythtv-users@snowman.net
>>>>http://lists.snowman.net/cgi-bin/mailman/listinfo/mythtv-users
>>>>
>>>>
>>>>
>>>>
>>>_______________________________________________
>>>mythtv-users mailing list
>>>mythtv-users@snowman.net
>>>http://lists.snowman.net/cgi-bin/mailman/listinfo/mythtv-users
>>>
>>>
>>>
>>-----BEGIN PGP SIGNATURE-----
>>Version: GnuPG v1.2.0 (FreeBSD)
>>
>>iD8DBQE+5Mi91CCG53ZaRNYRAnX8AJ9AvTX5uWgj52lCsFvWjJECyrv38QCdG0qf
>>fAtSOItevbu7TMFYJISOM4E=
>>=bZxs
>>-----END PGP SIGNATURE-----
>>_______________________________________________
>>mythtv-users mailing list
>>mythtv-users@snowman.net
>>http://lists.snowman.net/cgi-bin/mailman/listinfo/mythtv-users
>>
>>
>>
>>
>
>_______________________________________________
>mythtv-users mailing list
>mythtv-users@snowman.net
>http://lists.snowman.net/cgi-bin/mailman/listinfo/mythtv-users
>
>
>

Re: streaming latency problem [ In reply to ]

ken at bizrace

Jun 9, 2003, 12:03 PM

Post #7 of 7 (1592 views)

Permalink

Not really, it works well while streaming (except seeking). The real problem
is it seems to timeout while trying to connect to the backend in the playback
screen. I have noticed an overall latency increase since I moved the frontend
down stairs. Until last week it was in the same room as the access point and
it worked great, not a single complaint.

--Ken

Quoting Calvin Gorriaran <calvin@houstonns.com>:

> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
>
> Shouldn't you be using 100mbit instead of wireless with this kind of setup?
>
>
> On Mon, Jun 09, 2003 at 12:14:54PM -0400, Ken VanDine wrote:
> > I have both turned off. I think it is intermittently timing out trying to
>
> > connect to the master. Maybe allow a little extra time to connect?
> >
> > --Ken
> >
> >
> > Quoting Isaac Richards <ijr@po.cwru.edu>:
> >
> > > On Monday 09 June 2003 08:04 am, Ralf Haller wrote:
> > > > Running the frontend on the server itself doesn't show this
> behaviour.
> > > > Browsing and playing the recordings works smooth here.
> > > >
> > > > Any ideas what might cause my problems?
> > >
> > > Just turn off the video previews and turn on preview images instead,
> for
> > > now.
> > >
> > > Isaac
> > > _______________________________________________
> > > mythtv-users mailing list
> > > mythtv-users@snowman.net
> > > http://lists.snowman.net/cgi-bin/mailman/listinfo/mythtv-users
> > >
> > >
> > _______________________________________________
> > mythtv-users mailing list
> > mythtv-users@snowman.net
> > http://lists.snowman.net/cgi-bin/mailman/listinfo/mythtv-users
> >
> -----BEGIN PGP SIGNATURE-----
> Version: GnuPG v1.2.0 (FreeBSD)
>
> iD8DBQE+5Mi91CCG53ZaRNYRAnX8AJ9AvTX5uWgj52lCsFvWjJECyrv38QCdG0qf
> fAtSOItevbu7TMFYJISOM4E=
> =bZxs
> -----END PGP SIGNATURE-----
> _______________________________________________
> mythtv-users mailing list
> mythtv-users@snowman.net
> http://lists.snowman.net/cgi-bin/mailman/listinfo/mythtv-users
>
>