[linux-dvb] Problem with Avermedia AverTV DVB-T USB2.0 (a800)

Johannes Stezenbach js at linuxtv.org
Thu Aug 11 11:38:05 CEST 2005


Matt Holgate wrote:
> Patrick Boettcher wrote:
> >run tzap -r "BBC One Scot" and let mplayer play /dev/dvb/adapter0/dvr0 
> >directly (you don't need dvbstream, when playing locally).
> >
> >When mplayer appears to have the blocky picture, try to run dvbscan -c, 
> >while tzap is still running.
> 
> OK, just tried this. Below is the output:
> 
> [when working]
> matt at aragorn:~$ dvbscan -c
> using '/dev/dvb/adapter0/frontend0' and '/dev/dvb/adapter0/demux0'
> 0x0000 0x107c: pmt_pid 0x107c BBC -- BBC ONE Scot (???)
...
> [when not working]
> matt at aragorn:~$ dvbscan -c
> using '/dev/dvb/adapter0/frontend0' and '/dev/dvb/adapter0/demux0'
> WARNING: filter timeout pid 0x0011

This is typical for bad signal. dvbscan -5c might give you valid output.

> >It if won't time out, but put out the channels of this frequency, than 
> >the problem is probably the software-demuxer (unlikely), otherwise it is 
> >a bug in the dvb-usb-framework...

Why are you so sure that the device doesn't just output a broken stream?
Have you checked for missing (continuity_counter discontinuities)
or errored packets (transport_error_indicator set)?

Johannes




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