one quad opteron system could easily commflag and transcode four at once - and probably capture at least one and display one at the same time
trancoding is niced at 17 so if something like capture and/or display is going on it looses CPU to the more important process and simply takes longer to complete. Trancoding 640x480 29.97 fps RTJpeg .nuv to MPEG4 runs at about 1/2 to 1 hr of time for each 1hr of video when no other tasks are running on my Athlon XP 2500+ with 1GB of RAM. my MPEG settings are something like 1200bps with all three settings recommended for internlaced and mp3 quality at like 6 comm flagging happens in about 1/2 the time On 10/3/05, Illtud Daniel <[EMAIL PROTECTED]> wrote: > Rob Willett wrote: > > > Intersting to see a UK government org taking an interest in MythTV. > > ...Welsh government org, if you please! We're doing this on > behalf of the National Screen & Sound Archive of Wales, who have > agreements with broadcasters about recording reference copies of > broadcast material pertaining to Wales. > > >>>UK DVB cards/receivers - which would you recommend? > > > I persoanlly use the Nebula DVB card, though other people report > > success with the Avermedia 771 card. > > Nebula have some linux pages on their website - can people > confirm that they're linux friendly? > > > You can setup the system to record the EPG information provided by the > DVB > > stream. This works pretty well, though only has a week in advance. I've > never > > used Subtitiles so can't say if they work. > > Anybody out there with experience of DVB subtitle capture on mythtv? > Does mythtv only do 'live' subtitle decoding from the stream as it > plays, or does it capture the subtitles to somewhere else (SMIL? > MPEG7?). > > > Mythtv does not support FM radio nor does it easily support DVB radio e.g. > BBC 7 > > without a patch. This is because there is no video send with the audio. > This is > > a majot pain in the butt and I wish they would change MythTv to properly > support > > Radio. > > We'll need audio-only capture, either from an internal tuner or > a simple audio-in. We currently have an audio digitization > application, so it's not essential that we build this into Myth, > but it'd make sense to have it all in one. The BBC (I think > we very rarely record non-BBC radio) have some radio listings > on: http://backstage.bbc.co.uk/feeds/tvradio/ > > > Since there are 30 or so channels you wou would need around 5-7 servers > > depending on the hardware specs. > > We'd only be recording some programmes. We've enough experience of > enterprise systems to build a resilient backend (though we'd have > to look at how we'd do failover on the master backend - the SPoF > of the system). How many quad opterons (Sun do the nice v40z) > would it take to transcode say four programmes simultaneously? > Could one server handle 4 DVB capture cards? What's the first > bottleneck people hit - the PCI bus? hard drive speed? > > -- > Illtud Daniel [EMAIL PROTECTED] > Uwch Ddadansoddwr Systemau Senior Systems Analyst > Llyfrgell Genedlaethol Cymru National Library of Wales > Yn siarad drosof fy hun, nid LlGC - Speaking personally, not for NLW > > > _______________________________________________ mythtv-users mailing list [email protected] http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
