[mythtv-commits] Ticket #7136: PreviewGenerator when no backend binary

MythTV mythtv at cvs.mythtv.org
Tue Oct 20 23:35:34 UTC 2009

#7136: PreviewGenerator when no backend binary
 Reporter:  nigel             |       Owner:  danielk 
     Type:  patch             |      Status:  assigned
 Priority:  minor             |   Milestone:  unknown 
Component:  MythTV - General  |     Version:  head    
 Severity:  medium            |     Mlocked:  0       

Comment(by mdean):

 The attached patch,
 mythtv-7136-remove_GeneratePreviewRemotely_setting.patch , removes the
 "Generate preview image remotely" setting and does all preview generation
 from the backend process.  It does not remove the preview generator's
 ability to be used for local versus remote generation--it just makes the
 playbackbox use the remote generator.

 The recent improvements to UI responsiveness before previews are created
 and during preview generation make the amount of time it takes to generate
 a preview less important.  Furthermore, since the local preview generation
 was only used for the occasional changed recording (after setting a
 bookmark or cutlist or watched flag or ...) and for recordings in
 progress, the setting was mostly unused.  And, finally, since the days of
 the hugely-powerful frontend system with underpowered backend systems seem
 to be over and many users are actually taking the opposite approach (and
 creating powerful backends with low-powered frontends), this configuration
 should work well for everyone--even users who don't install mythbackend on
 dedicated frontend systems (or who are working on platforms to which
 mythbackend has not been ported).

 Even with my ca. 2002 Athlon XP 2000+ system generating previews for HDTV
 broadcasts (which it can not decode in real time), the preview generation
 seems sufficiently fast.  Therefore, rather than test for a local
 mythbackend binary before calling it, or even changing the defaults to
 enable the "Generate preview image remotely" setting, it makes more sense
 to just remove the setting completely.

 Nigel: Until the setting is removed, you can simply enable the "Generate
 preview image remotely" setting in Utilities/Setup|Setup|TV

Ticket URL: <http://svn.mythtv.org/trac/ticket/7136#comment:2>
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