Swfdec - Jun 2008 - [Bug 16180] New: YouTube works if I occasionally pause/unpause

http://bugs.freedesktop.org/show_bug.cgi?id=16180

           Summary: YouTube works if I occasionally pause/unpause
           Product: swfdec
           Version: 0.6.6
          Platform: PowerPC
        OS/Version: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: plugin
        AssignedTo: swfdec at lists.freedesktop.org
        ReportedBy: amcnabb at mcnabbs.org
         QAContact: swfdec at lists.freedesktop.org


YouTube videos work well except that something strange happens about once every
10 seconds.  The video will freeze for one or two seconds, and when it starts
going again, there is no sound.  Pausing and then unpausing the video seems to
bring it back.

I can work around the problem by double-clicking the pause button every time it
starts to freeze.  As you can imagine, this is an annoying solution.

Anyway, let me know if there's anything simple I can do to give you more
information.  Thanks for your hard work on swfdec; I really appreciate it.


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--- Comment #1 from Benjamin Otte <otte at gnome.org>  2008-06-01 07:05:13
PST ---
Yay, a Heisenbug.
I've never heard of a problem like this, but it might be related to hitting
100% CPU load and some garbage collector (maybe Swfdec's internal one, but X
might be reclaiming texture memory from the driver, too) running periodically.

The suggested method to get this fixed is upgrading to a faster computer. ;)


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Riccardo Magliocchetti <riccardo at datahost.it> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
          Component|plugin                      |library




--- Comment #2 from Riccardo Magliocchetti <riccardo at datahost.it> 
2008-06-01 14:53:24 PST ---
I thought this was more popular :) From my own experience what i see is that
rendering costs a lot in term of cpu time (mostly pixman) and there's a sort
of
underrun because it steal cpu time to download stuff. FYI here cpu time is
around 30% swfdec and 70% X with radeon driver and xaa acceleration.


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--- Comment #3 from Andrew McNabb <amcnabb at mcnabbs.org>  2008-06-01
16:11:10 PST ---
CPU is definitely an issue.  Firefox uses 90% or so of the CPU when I'm
watching a video.  In fact, Firefox still uses 60% of the CPU even when the
video is paused.

It can't help that I can only use the nv and nouveau drivers, neither of
which
are super fast.  (the problem happens with both nv and nouveau)

Anyway, upgrading sounds like a great idea, but I don't have that kind of
money
right now.  I agree; it would be nice.


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--- Comment #4 from Riccardo Magliocchetti <riccardo at datahost.it> 
2008-09-08 05:18:31 PST ---
Andrew, can you give 0.8 a try please?


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--- Comment #5 from Andrew McNabb <amcnabb at mcnabbs.org>  2008-09-08
06:56:30 PST ---
Riccardo, I just looked at koji, and the latest build seems to be
swfdec-0.7.4-1.fc10.


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--- Comment #6 from Riccardo Magliocchetti <riccardo at datahost.it> 
2008-09-08 08:38:58 PST ---
No hurry :) one thing you may want to try is using a version of pixman more
recent of 0.11.2 which started shipping some altivec optimization.


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--- Comment #7 from Riccardo Magliocchetti <riccardo at datahost.it> 
2008-09-21 09:37:01 PST ---
Andrew, just looked to koji, you should find both pixman 0.12.0 and swfdec
0.8.0.


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--- Comment #8 from Andrew McNabb <amcnabb at mcnabbs.org>  2008-09-24
06:40:43 PST ---
With pixman 0.12.0 and swfdec 0.8.0, Youtube videos are now playable. 
They're
still a little choppy, and the sound will occasionally make a loud blip, but
it's a huge improvement.


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Riccardo Magliocchetti <riccardo at datahost.it> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |FIXED




--- Comment #9 from Riccardo Magliocchetti <riccardo at datahost.it> 
2008-09-24 07:17:01 PST ---
Cool, you are now on par with me in swfdec playback smoothness :). The next
boost in performance will from nouveau exa acceleration work i think; major
releases of cairo usually helps too. So i'm closing this because it's
more
matter of the ecosystem rather than swfdec itself.


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