Full featured DVB cards (Siemens/Technotrend AV7110 design) apparently have trouble with receiving channels at very low symbol rates. An example is TVS Teleport Bonn;DMV:11535:vC34:S1.0W:5632:308+8190:256=eng,257=eng:0:2:1:65535:1:0 with a symbol rate of 5632 (that transponder isn't always on, though). My FF DVB card can't receive this channel, so I have to receive it with a budget card, which is able to handle this symbol rate. In order to automate this I tried getting the dvb_frontend_info and checked its symbol_rate_min, hoping that I could use this to find out whether a given device could receive a channel with a given symbol rate. Unfortunately both my FF card and my budget card report the same minimum symbol rate: name Alps BSRV2 type 0 frequency_min 950000 frequency_max 2150000 frequency_stepsize 250 frequency_tolerance 29500 symbol_rate_min 1000000 symbol_rate_max 45000000 symbol_rate_tolerance 0 notifier_delay 50 caps 0x000006AF name STV0299/TSA5059/SL1935 based type 0 frequency_min 950000 frequency_max 2150000 frequency_stepsize 125 frequency_tolerance 44000 symbol_rate_min 1000000 symbol_rate_max 45000000 symbol_rate_tolerance 500 notifier_delay 0 caps 0x400006AF So I'm afraid I can't use this to make that decision. Is there anything else I could use, or do I just have to check for the existence of a video and audio device (which indicates that there is an MPEG decoder) and in that case refuse to switch to a channel with a symbol rate of, say, less than 10000 (in VDR's channels.conf notation)? Klaus
