[mythtv-users] confusing HD-PVR capture failure - solved
Richard Woelk
richardwoelk at yahoo.ca
Sat Dec 6 05:05:45 UTC 2008
I am writing this for the archives to hopefully save some other people
some frustration.
I have a mythtv system with a single backend and remote front end. I
have been running my HD-PVR on mythtv trunk since I got it in late
August. I have upgraded the backend from fedora 6 through fedora 9 and
have had upgraded computers twice in that time too, I have had very few
problems with upgrades and I'm always upgrading to the latest svn every
week or so
Recently, I decided to rearrange the server room, so I unplugged the
whole computer, HD-PVR, and everything. After this physical move, the
HD-PVR refused to recording in mythtv.
the only error I saw in mythbackend's log was
2008-12-05 10:59:08.166 MPEGRec(/dev/video1) Error: Device error detected
2008-12-05 10:59:08.171 DevRdB(/dev/video1): Stop(): Not running.
The recording would appear to be in progress, but the file size would
remain at 0 bytes in mythweb, and the frontend reported "this file is
not available yet"
After recompiling mythtv with various new and old HD-PVR patches,
upgrading my kernel, recompiling the driver. I decided to try it on my
windows laptop.
it was then that I found the solution. (it didn't work there either)
I had the SPDIF cable plugged into the output of the HDPVR instead of
the input.
Aparently, like having no video signal, the HDPVR will not record a with
no audio signal from the SPDIF input either.
The confusing part was that cat /dev/video1 > test.ts would sometimes
produce a file that was playable with mplayer (I guess before mythtv had
a chance to set audio to SPDIF), and not having speakers on my backend I
didn't realize there was no audio in the file.
I hope this helps someone out.
- Richard
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