[mythtv-users] Smoothing out playback?

James Warden warjamy at yahoo.com
Sat Mar 10 12:35:44 UTC 2007


Some news here :

I am now using the debian-multimedia package (version 0.20-svn20070223-0.0) on all my boxes (b/e and f/e's). If fixed liveTV on one of my f/e's but I still observe the same problem on another one. More precisely, liveTV works fine for half a minute and then pauses about 2 sec, resumes playback, pauses 2sec, resumes again, etc. The log messages related to this behavior are :

----
2007-03-10 12:25:10.895 Checking to see if there's a new livetv program to switch to..
2007-03-10 12:25:11.955 NVP: Prebuffer wait timed out 10 times.
2007-03-10 12:25:13.019 RingBuf(/multimed/mythtv/livetv/1006_20070310122457.mpg): Waited 1.0 seconds for data to become available...
----
on and on ...

It looks like it's trying to switch to another program periodically but it's always switching back to itself.

Did anybody observe such behavior ???

J. 

James Warden <warjamy at yahoo.com> wrote: you probably have a point here ;)
there are a few small things that the official 0.20 release does not have but considering that liveTV playback is screwed in my system, I will fall back to a more stable version.

J.

Calvin Harrigan <charriglists at bellsouth.net> wrote: James Warden wrote:
> Hi,
> 
> I have a similar problem these days :
> 
> I have a b/e and a few remote f/e at home. I very recently updated 
> mythtv to the latest svn  version (one f/e just yesterday evening). 
> Since then, I've had lots of trouble  getting a smooth playback when 
> using a remote f/e and watching liveTV. Sometimes it works, say for 2mn, 
> sometimes it stutters very badly (with some 'wait timed out 10 times 
> messages'). This has nothing to do with my network speed (wired LAN or  
> wireless g). It worked perfectly well before I updated to the latest 
> SVN. But actually, it started to behave like this when the myth net 
> protocol version was bumped up to 32 or 33.
> 
> When I run a f/e directly on the b/e (not using the network), I have no 
> problem at all. So it has to do with the mythtv network protocol. I 
> cannot think of any other source of problem. This is very frustrating.
> 
> J.
> 
> */Joe /* wrote:
> 
>     ok, well thanks to some of you here i have finally got my backend
>     and frontend boxes talking, thank you for that.
>     my backend is a p4 1800mhz running slackware, and right now i have a
>     dell laptop 1600p4 running the frontend.
>     when i try to watch live tv or playback a recording, its dropping
>     frames, playback runs like garbage. at first i was using wireless.
>     then i  went to 100mbit lan. didnt fix anything. the recordings play
>     fine using samba on my windows box. right now i'm at work, and i'm
>     looking for things to try when i get home?
>     guess i'll copy one of the recordings over to the frontend box and
>     see if that plays back correctly. if it doesnt, what can i do?
>     lower the bitrate of the recordings?
>     anyone else have any problems streaming dvd quality recordings over
>     the network?
>     some ideas of what to check for would be great. thanks
>     Joe
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Isn't svn the testing/development branch?  I imagine it would not 
function properly all the time.  Given that it's a testing branch, 
perhaps a detailed bug report would be more constructive.  Is there any 
reason why you have to run svn?  Particular hardware support?  A must  
have feature?  I've been running myth since 0.5, never really had a 
problem with it outside of the occasional bug.  But then again I've 
always ran a stable version.  Perhaps a regression to the 0.20 fixes my 
be advisable.

Calvin...
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