[mythtv-users] Minimum backend specs?

David Schmidt david.schmidt.in.dallas at gmail.com
Wed Apr 5 20:41:56 UTC 2006


Well, transcoding or commercial flagging.

My prototype running on a P3/450 takes about 2-2.5 hours to commercial
flag 1 hour of SD.

On 4/5/06, Cristo Saulo Bolaņos Trujillo <cbolanos at telefonica.net> wrote:
> I run mythbackend in a amd k7 at 700 and runs perfectly version 0.18 (0.19
> introduces a delay like the one you're experimenting).
>
> Really, if you don't use transcoding, don't need a powerfull system.
>
> On Wed, Apr 05, 2006 at 05:45:26PM +0000, Dom H wrote:
> > It seems my issues are more with my Nova-T card and 0.19 than physical
> > hardware specs. I'd still be intrested to hear what specs I should aim for
> > building a backend machine though.
> >
> > Regards
> >
> > Dom
> >
> >
> > >From: "Dom H" <speedsix80 at hotmail.com>
> > >Reply-To: Discussion about mythtv <mythtv-users at mythtv.org>
> > >To: mythtv-users at mythtv.org
> > >Subject: [mythtv-users] Minimum backend specs?
> > >Date: Wed, 05 Apr 2006 17:12:24 +0000
> > >
> > >Hi,
> > >
> > >I setup a Knoppmyth (based on Mythtv 0.19) backend on an old dell Celeron
> > >700mhz/384MB system and streaming recordings worked great but streaming
> > >live
> > >tv to my frontend (amd64) was terribley slow. Changing channels took
> > >20-30secs. Console log was as follows..
> > >
> > >
> > >2006-03-31 23:25:54.293 TV: Attempting to change from None to
> > >WatchingLiveTV
> > >2006-03-31 23:25:54.302 Using protocol version 26
> > >2006-03-31 23:25:58.127
> > >RingBuf(myth://10.0.0.4:6543/1035_20060331232554.mpg): Waited 2 seconds for
> > >data to become available...
> > >2006-03-31 23:25:59.565
> > >RingBuf(myth://10.0.0.4:6543/1035_20060331232554.mpg): Timing out wait due
> > >to impending livetv switch.
> > >0: start_time: -9223372036854.775 duration: -9223372036854.775
> > >stream: start_time: -9223372036854.775 duration: -9223372036854.775
> > >bitrate=0 kb/s
> > >2006-03-31 23:26:02.558 AFD: Opened codec 0x8326b70, id(MPEG1VIDEO)
> > >type(Video)
> > >2006-03-31 23:26:02.558 NVP: Disabling Audio, params(-1,-1,-1)
> > >2006-03-31 23:26:02.558 NVP: Disabling Audio, params(0,-1,-1)
> > >2006-03-31 23:26:03.475 TV: Changing from None to WatchingLiveTV
> > >2006-03-31 23:26:03.477 New DB connection, total: 3
> > >2006-03-31 23:26:03.567 Connected to database 'mythconverg' at host:
> > >10.0.0.4
> > >2006-03-31 23:26:03.610 Realtime priority would require SUID as root.
> > >[mpeg1video @ 0xb74e87c4]qscale == 0
> > >[mpeg1video @ 0xb74e87c4]Warning MVs not available
> > >2006-03-31 23:26:04.344 LiveTV forcing JumpTo 1
> > >2006-03-31 23:26:04.475 Video timing method: USleep with busy wait
> > >2006-03-31 23:26:04.837 NVP: prebuffering pause
> > >2006-03-31 23:26:05.656 NVP: Prebuffer wait timed out 10 times.
> > >2006-03-31 23:26:06.306 rebuffering (1 32768)
> > >2006-03-31 23:26:06.479 NVP: Prebuffer wait timed out 10 times.
> > >0: start_time: 7073.167 duration: 0.900
> > >1: start_time: 7073.159 duration: 0.842
> > >2: start_time: 7073.159 duration: 0.909
> > >3: start_time: 7073.159 duration: 0.909
> > >stream: start_time: 78590.652 duration: 10.096 bitrate=3395 kb/s
> > >2006-03-31 23:26:07.489 AFD: Opened codec 0xac7164e0, id(MPEG2VIDEO)
> > >type(Video)2006-03-31 23:26:07.538 AFD: Opened codec 0xac716a60, id(MP3)
> > >type(Audio)
> > >2006-03-31 23:26:07.538 AFD: Opened codec 0xac716fe0, id(DVB_SUBTITLE)
> > >type(Subtitle)
> > >2006-03-31 23:26:07.538 AFD: Opened codec 0xac717560, id(MP3) type(Audio)
> > >2006-03-31 23:26:07.559 Opening audio device '/dev/dsp'.
> > >2006-03-31 23:26:07.559 Opening OSS audio device '/dev/dsp'.
> > >2006-03-31 23:26:07.622 NVP: Enabling Audio
> > >2006-03-31 23:26:07.783 NVP: Prebuffer wait timed out 10 times.
> > >2006-03-31 23:27:10.894 NVP: prebuffering pause
> > >
> > >
> > >Thanks
> > >
> > >
> > >_______________________________________________
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> >
> >
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> >
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