[mythtv-users] Shaking video output after 0.21 upgrade.

Mike Dent mcdent at gmail.com
Mon Jun 2 13:49:49 UTC 2008


2008/5/14 Bruce Richardson <itsbruce at workshy.org>:
>
> On Sat, Mar 22, 2008 at 09:45:05AM +0100, arvtor wrote:
> > Hi,
> >
> > I have a problem with the live TV (and recordings too) after the 0.21
> > upgrade. The video seems to shake once in a while, and also stutter some
> > times, and when I use the OSD with BOB, you can see how the OSD is
> > distorted, and not in "sync".
> >
> > In 0.20, I could watch live TV for hours without a single distortion, on
> > my Dell PIII 733MHz, with Soundblaster Live, GeForce 256 and pvr150(yes
> > I know, very low end system, I build it as a test a couple of years ago,
> > and it has served well!)
>
> I had the same problem when I upgraded to 0.21 (just this evening.)  I
> fixed it by changing the playback profile (new feature in 0.21) from
> CPU+ to CPU-.
>
> --
> Bruce

Hmmm,
I am having the same problems, stutter and what appears to be low
frame rate of recording playback. Not really noticed on live tv as I
don't operate it like this much.
It's got to the stage where the wife is not interested in watching
recordings on myth because as she says: "its all shaky and stuttery!"
At times the audio seems to slip a little too, which gets very
difficult to watch.
With 0.20 I did not notice this at all. I'm running 0.21 on Ubuntu
7.10 with an AMD Athlon(tm) 64 Processor 3200+, 1gb ram.

mike at myth1:~$ cat /proc/cpuinfo
processor : 0
vendor_id : AuthenticAMD
cpu family : 15
model : 47
model name : AMD Athlon(tm) 64 Processor 3200+
stepping : 2
cpu MHz : 1000.000
cache size : 512 KB
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 1
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov
pat pse36 clflush mmx fxsr sse sse2 syscall nx mmxext fxsr_opt lm
3dnowext 3dnow up pni lahf_lm ts fid vid ttp tm stc
bogomips : 2011.08
clflush size : 64


mike at myth1:~$ free
             total       used       free     shared    buffers     cached
Mem:       1035636     966476      69160          0       7768     690236
-/+ buffers/cache:     268472     767164
Swap:      4096564      34852    4061712
mike at myth1:~$


mike at myth1:~$ uname -a
Linux myth1 2.6.22-14-generic #1 SMP Tue Feb 12 07:42:25 UTC 2008 i686 GNU/Linux
mike at myth1:~$

Any pointers on what might be causing this would be very welcome I can
tell you! :)
Thanks
Mike


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