Bug #493

Stuttering with tvheadend playback

Added by Paul Nolan almost 10 years ago. Updated over 9 years ago.

Status:RejectedStart date:05/07/2011
Priority:LowDue date:
Assignee:Andreas Smas% Done:

0%

Category:Video playback
Target version:3.0
Found in version:2.99.351.ga5eea Platform:

Description

Hi Andreas
When i use showtime to play content from tvheadend, all is ok as long as the playback window is relatively small. If I increase the size of the window, or maximise it, then playback starts to stutter after around 15-20 seconds.

AMD Athlon(tm) II P320 Dual-Core Processor
M880G [Mobility Radeon HD 4200]
Showtime 2.99.351.ga5eea

How to debug?

Thanks

History

#1 Updated by Andreas Smas almost 10 years ago

This is probably the GPU beeing to slow to paint using Showtimes video shaders.

I think Showtime needs to be able to figure out when the GPU is too slow and show that as a warning.

#2 Updated by Andreas Smas almost 10 years ago

  • Category set to Video playback
  • Status changed from New to Accepted
  • Assignee set to Andreas Smas
  • Priority changed from Normal to Low
  • Target version set to 2.99

#3 Updated by Andreas Smas almost 10 years ago

  • Status changed from Accepted to Rejected

I won't address this anytime soon. Sorry.

#4 Updated by Paul Nolan almost 10 years ago

I am not convinced that it is a slow GPU problem as I can view tvheadend streams through the browser using vlc plugin fullscreen with no problems at all.. . .

#5 Updated by Andreas Smas almost 10 years ago

  • Found in version set to 2.99

Showtime uses its own OpenGL shaders to do YUV -> RGB conversion and scaling.
While i'm pretty sure that vlc would use X11 Video extension or something like that.

Those might be differently accelerated by the GPU

#6 Updated by Andreas Smas almost 10 years ago

  • Found in version changed from 2.99 to 2.99.351.ga5eea

#7 Updated by Andreas Smas almost 10 years ago

  • Target version changed from 2.99 to 3.0

#8 Updated by Paul Nolan over 9 years ago

This appears to be cured in git 94da7f9. . . .

:=)

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