Opened 9 years ago

Closed 8 years ago

#10788 closed Bug Report - General (Fixed)

Scrolling Program Guide while watching Live TV causes video/audio stuttering

Reported by: Josh Triplett <josh@…> Owned by:
Priority: minor Milestone: 0.27
Component: MythTV - General Version: 0.25
Severity: medium Keywords:
Cc: Ticket locked: no


On all of my frontends, bringing up and scrolling the Program Guide when watching Live TV causes the video and audio to stutter, and nearly stop completely until the scrolling stops. This represents a regression from 0.22.

Frontend logs during that time show many copies of two messages: "AddTextData?(): Text buffer overflow" and "Using protocol version 72". The former likely just represents another symptom of the stuttering. The latter suggests that mythfrontend connects repeatedly to mythbackend while scrolling through the program guide, which seems like a potential performance issue.

Change History (3)

comment:1 Changed 9 years ago by olafurh@…

What is the status of Program Guide stutter in Live TV ? It is driving me mad. (or my wife).

Dose it need to check if tuner is available ?

comment:2 Changed 9 years ago by Shinck@…

Related to Program Guide stutter please also consider ticket #11020. There I've provided a patch which fixes the stuttering and long responses on scrolling-keypresses. In meantime I've switched to MythTV 0.26 and the patch also applies to 0.26 Another help will be the patch from ticket #11019. It also applies to MythTV 0.26 and fixes/0.25

Regards Sascha

comment:3 Changed 8 years ago by stuartm

Milestone: unknown0.27
Resolution: Fixed
Status: newclosed

This now works much better for me following changes to the image caching, the repeated connections to the backend were caused by the image cache checking the modification timestamps on the remote files. These checks were far too aggressive, especially when most files aren't going to be changed often.

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