[mythtv-users] Playing back old recordings

Nick Morrott knowledgejunkie at gmail.com
Thu Apr 12 00:45:57 UTC 2007


On 11/04/07, Piers Kittel <mythtv at biased.org> wrote:
> Hello all,
>
> Thanks to those who helped with my udev problem!
>
> I've got another small problem relating with transferring videos from
> old hardware to new one.  Essentially, I just dumped everything from
> the old database, and put everything back in the new database.
> Everything works, I can see a list of previous recordings, I can see
> image previews, everything.  But when I try to start a recording, I
> just get a black screen and the frontend crashes.  It strongly looks
> like the backend can't access the recording - but it's strange as I
> can view static images from the video.  Here's a snippet of the
> output from the backend:
>
> 2007-04-11 16:38:17.630 MainServer::HandleAnnounce Monitor
> 2007-04-11 16:38:17.630 adding: Stella.local as a client (events: 0)
> 2007-04-11 16:38:17.632 Preview Error: Previewer file '/video/
> 1953_20070411095300.mpg' is not valid.
> 2007-04-11 16:38:17.632 MainServer: Failed to make preview image.
> 2007-04-11 16:38:17.732 MainServer::HandleAnnounce Playback
> 2007-04-11 16:38:17.732 adding: Stella.local as a client (events: 0)
> 2007-04-11 16:38:17.734 MainServer::HandleAnnounce FileTransfer
> 2007-04-11 16:38:17.734 adding: Stella.local as a remote file transfer
> 2007-04-11 16:38:18.236 RingBuf(/video/1953_20070411095300.mpg.png):
> Could not open /video/1953_20070411095300.mpg.png.
> 2007-04-11 16:38:18.254 MainServer::HandleAnnounce Monitor
> 2007-04-11 16:38:18.254 adding: Stella.local as a client (events: 0)
> 2007-04-11 16:38:18.256 Preview Error: Previewer file '/video/
> 1953_20070411095300.mpg' is not valid.
> 2007-04-11 16:38:18.256 MainServer: Failed to make preview image.
> 2007-04-11 16:38:18.664 MainServer::HandlePixmapLastModified() -
> Couldn't find backend for: Bowling for Columbine : ""
> 2007-04-11 16:38:18.669 MainServer::HandleAnnounce Playback
> 2007-04-11 16:38:18.669 adding: Stella.local as a client (events: 0)
> 2007-04-11 16:38:18.671 MainServer::HandleAnnounce FileTransfer
> 2007-04-11 16:38:18.671 adding: Stella.local as a remote file transfer
> 2007-04-11 16:38:19.032 MainServer::HandlePixmapLastModified() -
> Couldn't find backend for: Bowling for Columbine : ""
> 2007-04-11 16:38:19.476 MainServer::HandlePixmapLastModified() -
> Couldn't find backend for: Bowling for Columbine : ""

It looks like the database does not know which backend the file is
stored on? Have you changed the backend's name? Did you update the
recording data before you restored it to the new machine?

Probably time to check via MySQL or phpMyAdmin...

Nick
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