Opened 13 years ago

Closed 13 years ago

#4196 closed defect (wontfix)

DVB CAM problem

Reported by: mattia@… Owned by: Isaac Richards
Priority: major Milestone: unknown
Component: mythtv Version: 0.20
Severity: medium Keywords: dvb cam scrambled image restart backend hang
Cc: Ticket locked: no


I have a mythbackend version 0.20.20070821-1 installed on a Debian Etch (stable) system. Sometimes I have to restart the backend because I see a very very scrambled image in live TV (you can see a photo here

If I stop and restart the mythbackend all return to works good.

When I see the scrambled images I have these logs on the backend:

2007-08-07 20:53:54.510 MainServer::HandleAnnounce? Playback 2007-08-07 20:53:54.511 adding: camera as a client (events: 0) 2007-08-07 20:53:54.514 TVRec(1): Changing from None to WatchingLiveTV 2007-08-07 20:53:54.515 TVRec(1): HW Tuner: 1->1 2007-08-07 20:53:57.057 Finished recording Soliti ignoti Identità nascoste: channel 4401 2007-08-07 20:53:57.127 Finished recording Soliti ignoti Identità nascoste: channel 4401 2007-08-07 20:53:57.143 Preview Error: Previewer file '/video/record/4401_20070807205354.mpg' is not valid. 2007-08-07 20:53:57.165 MainServer::HandleAnnounce? Playback 2007-08-07 20:53:57.166 adding: camera as a client (events: 0) 2007-08-07 20:53:57.168 MainServer::HandleAnnounce? FileTransfer? 2007-08-07 20:53:57.169 adding: camera as a remote file transfer 2007-08-07 20:54:00.410 Expiring Soliti ignoti Identità nascoste from mar ago 7 20:30:00 2007, 6 MBytes, forced expire (LiveTV recording) 2007-08-07 20:54:29.297 TVRec(1): Changing from WatchingLiveTV to None 2007-08-07 20:54:29.368 Finished recording Soliti ignoti Identità nascoste: channel 4401

"Nick F" answered me this in the MythTV mailing list:

Are you using a CAM by any chance? I was finding a similar problem. I adjusted the usleep value in the dvbcam module and it helped. I still need to reset my backend every two weeks or so when I get a similar scrambled picture problem. In my case it's a DVB problem, not a myth problem.

I haven't solved this problem yet and I am available for testing.

Attachments (1)

image00163av1.jpg (35.8 KB) - added by anonymous 13 years ago.

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Change History (3)

Changed 13 years ago by anonymous

Attachment: image00163av1.jpg added

comment:1 Changed 13 years ago by galaxiaguy@…


Are you using EIT? I had this problem for a while but it went away when I disabled EIT. When I get home I can add the actual error message that was appearing during the EIT scan (something about the CAM being locked).

comment:2 Changed 13 years ago by danielk

Resolution: wontfix
Status: newclosed

The CAM code has changed a lot as part of the multirec project + we're no longer fixing 0.20 specific problems.

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