[mythtv-commits] Ticket #13494: Add framerate-based sync setting

MythTV noreply at mythtv.org
Tue Oct 29 14:50:17 UTC 2019


#13494: Add framerate-based sync setting
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 Reporter:  madscientist159          |          Owner:  Peter Bennett
     Type:  Patch - Feature          |         Status:  assigned
 Priority:  minor                    |      Milestone:  needs_triage
Component:  MythTV - Video Playback  |        Version:  v29-fixes
 Severity:  low                      |     Resolution:
 Keywords:                           |  Ticket locked:  0
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Changes (by Peter Bennett):

 * cc: mark-kendall (added)


Comment:

 It appears you have video hardware that plays 6 frames behind real time.
 It seems to be a unique setup. I am not comfortable with making a change
 that is specifically for one user.

 Version 30 has a new sync method (AVSYNC2) that is selectable from
 settings, as well as a new audio buffer setting, where you can increase
 audio buffering if needed. I do not believe these will fix your problem,
 but they may change things in a way that causes your patch to work
 incorrectly.

 Version 31 will include rewritten rendering code that is currently being
 worked on, and that may further affect you. As MythTV developers, we have
 no way of testing your patch with new versions.

 Perhaps another approach may be to add a setting for "additional audio
 sync" to the playback group feature. Could you setup your recordings so
 that they go into a different playback group based on their frame rate?
 Each program that you record will likely have the same framerate for all
 recordings. The playback group on existing recordings can easily be
 changed through the front end. This does have the problem that playback
 group settings apply across all frontends, whereas this setting is likely
 to be frontend specific.

-- 
Ticket URL: <https://code.mythtv.org/trac/ticket/13494#comment:5>
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