> If this has already been answered sorry but I am catching up on the -dev list > after a few days of ignoring it.. Are you using hte DVB drivers for starters? > (I have to assume you are if you are scaning).. Can you tune to some > multiplexes where you know channels are and see if you can find an VCTs (i.e. > data on PID 0x1FFB).. Some cable systems don't send VCTs from what I have > gathered from the list and when the scaning app gets no meta data it just > bails > out and gives up.. I need to change this, but I need to know if you are > getting > VCTs very slowly, or if they are just not present at all..
Yes, I'm using DVB. I'm using the HD-3000 DVB support built into the 2.6.11-rc3 kernel. (cx88-dvb module?) I'm a real neophyte when it comes to all the DVB terminology so bear with me but it looks like there's data on PID 0x1FFB. Using the linuxtv.org dvb-apps I have the following entry in my channels.conf: C82:573000000:QAM_256:0:0 If I run "azap -r C82" it shows a signal lock. I then run dvbtraffic and its output contains: -PID--FREQ-----BANDWIDTH-BANDWIDTH- ... 0800 1685 p/s 309 kb/s 2535 kbit 0801 131 p/s 24 kb/s 197 kbit 0802 69 p/s 12 kb/s 104 kbit 0840 2063 p/s 378 kb/s 3103 kbit 0841 132 p/s 24 kb/s 199 kbit 0842 67 p/s 12 kb/s 101 kbit 0880 2390 p/s 438 kb/s 3594 kbit 0881 130 p/s 23 kb/s 196 kbit 0882 68 p/s 12 kb/s 103 kbit ... 1fff 1530 p/s 280 kb/s 2302 kbit 2000 25804 p/s 4737 kb/s 38809 kbit If I then modify my channels.conf using the PID's 880 & 881 (converted to decimal) to this: C82:573000000:QAM_256:2176:2177 Then after running azap on this channel I can pipe /dev/dvb/adapter0/dvr0 to mplayer and view the channel. Another thing I found is that if I run azap on an OTA channel while hooked up to an antenna then dvbscan will show output like this: $ dvbscan -c using '/dev/dvb/adapter0/frontend0' and '/dev/dvb/adapter0/demux0' service is running. Channel number: 25:1. Name: 'FOX Television Boston MA' dumping lists (1 services) FOX Television Boston MA (0x0003) 00: PCR == V V 0x0031 A 0x0034 (eng) 0x0034 (eng) Done. But if I have the cable hooked up and do the same on a QAM channel that I've identified then the output is more like this: $ dvbscan -c using '/dev/dvb/adapter0/frontend0' and '/dev/dvb/adapter0/demux0' WARNING: filter timeout pid 0x1ffb dumping lists (11 services) [0002] (0x0002) 00: PCR 0x0800 A 0x0801 0x0802 (spa) [000b] (0x000b) 00: PCR 0x0840 A 0x0841 0x0842 (spa) [0009] (0x0009) 00: PCR 0x0880 A 0x0881 0x0882 (spa) [0008] (0x0008) 00: PCR 0x08c0 A 0x08c1 0x08c2 (spa) [0003] (0x0003) 00: PCR 0x0900 A 0x0901 0x0902 (spa) [0007] (0x0007) 00: PCR 0x0940 A 0x0941 0x0942 (spa) [0001] (0x0001) 00: PCR 0x0980 A 0x0981 0x0982 (spa) [000a] (0x000a) 00: PCR 0x09c0 A 0x09c1 0x09c2 (spa) [0004] (0x0004) 00: PCR 0x0a00 A 0x0a01 0x0a02 (spa) [000c] (0x000c) 00: PCR 0x0a40 A 0x0a41 0x0a42 (spa) [0006] (0x0006) 00: PCR 0x0a80 A 0x0a81 Done. > I will be glad to assist you, but chances are I will be digging into this for > the next few days since my 5th gen Air2PC should be here tomorrow and I want > to > make it work with Cable as well as 8VSB since thats what is specd out to do.. I'll be more than happy to do whatever testing you might need. As I said before I don't know much about DVB, etc. but I used to develop telephony software so I'm used to debugging in realtime streaming environments. I've got no problems firing up gdb & tracing through things as long as you give me a good idea of what you're looking for. Feel free to e-mail me directly whenever you're done with the Air2PC work. -Bruce _______________________________________________ mythtv-dev mailing list [email protected] http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-dev
