mike choy wrote: > Matthew Linden wrote: > >> mike choy wrote: >> >>> Matthew >>> >>> if tzap is tuning that is pretty good, can you get a picture using >>> dvbstream >>> >>> =============from ethics gradient===================================== >>> >>> "Now look at your channels.conf file for the channel you tuned >>> above. For my setup on the Crystal Palace transmitter this line >>> looks like: >>> >>> BBC >>> ONE:505833330:INVERSION_OFF:BANDWIDTH_8_MHZ:FEC_3_4:FEC_NONE:QAM_16:TRANSMISSION_MODE_2K:GUARD_INTERVAL_1_32:HIERARCHY_NONE:600:601 >>> >>> >>> The last two numbers are the IDs of the video and audio stream >>> within the multiplex. We also need the transmission parameters to >>> feed to dvbstream. The command I would use for the channel above is >>> this: >>> >>> *# dvbstream -o -ps -qam 16 -cr 3_4 600 601 | mplayer -* >>> >>> You'll need different options if you have DVB-S or DVB-C. See the >>> documentation for dvbstream. >>> >>> The result should be a perfect DVB picture of your chosen channel. >>> It should not stutter or break up and the audio should be clean. >>> It's just possible that occasional artefacts may appear but they >>> shouldn't be very noticeable. If the video breaks up, has major >>> colour problems, has a very low frame rate or is corrupt then there >>> is something wrong. >>> ================================================================== >>> >> Mike, >> >> It freezes after a couple of minutes using dvbstream and mplayer in >> exactly the same way as with Kaffeine and xawtv4. >> >> I really do think the problem is with the USB power draw. A colleague >> was telling me this morning that boards for AMD CPUs are well known >> for having low power USB ports. >> >> Matthew >> >> _______________________________________________ >> >> linux-dvb@xxxxxxxxxxx >> http://www.linuxtv.org/cgi-bin/mailman/listinfo/linux-dvb >> > Might be worth trying an externally powered USB hub. > eg I have some ports on my monitor which are powered by the monitor, > and these worked for my ipod > compared to the ports on the mother board on one of my machines. > > Mike C Problem solved - albeit with yet more ugly gubbins and cables. The card works fine with no freezes when using an externally powered USB hub. Thanks for the suggestion. Matthew > >
