Just a quick note that, depending on your system and set-up, the transcoding may take longer than you expect. I have an Athlon 64, and the cool-n-quiet means that when idle it roughly halves the processor speed. Niced processes (i.e. the transcoding) do not cause the processor to ramp up to full speed. I found this out when I niced the MythTV compile and wondered why it was taking so long.
On Monday 03 October 2005 18:06, Derek Meek wrote: > 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 -- Steve Boddy _______________________________________________ mythtv-users mailing list [email protected] http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
