theora - Sep 2005 - Jumpy Video

Hi!

I tried two theora experiments lately... One encoding a Quicktime MOV
file using ffmpeg2theora and one using Thoggen.

Both times I had a very jumpy result... The thoggen-encoded DVD would 
'jump' every half second or so, as if there was a slight, perhaps 20ms 
pause. Audio would remain synced though.

The quicktime file would jump even more, being reduced to looking like a
crisp 2fps video in fast forward. (Already dicussed this with J on
#theora, he wasn't able to reproduce... Tried ffmpg2theora versions .13
and .15., libtheora alpha4 and libtheora alpha4-mmx)

Anybody else experience anything similar? I'm running a Debian
Sarge/DeMuDi machine.

Help very much appreciated.

Carlo

Hi,
> Both times I had a very jumpy result... The thoggen-encoded DVD would 
> 'jump' every half second or so, as if there was a slight, perhaps
20ms
> pause. Audio would remain synced though.
It is important to verify a couple of things.

a) what player did you use on the file ripped by thoggen ?
b) can you run oggz-validate on the ripped file (see liboggz) ? This
will tell us if the file was correctly muxed.
c) What versions of gstreamer and gst-plugins are you using ? In some of
the older versions, various mixing/timing bugs were present that I fixed
at some point, and you need a recent enough version of both.

Thomas


Dave/Dina : future TV today ! - http://www.davedina.org/
<-*- thomas (dot) apestaart (dot) org -*->
Please put me somewhere near the sea
With one carrion angel waiting for me
who'll be holding my heart in it's hand
But most of all I'd like to go with a friend
<-*- thomas (at) apestaart (dot) org -*->
URGent, best radio on the net - 24/7 ! - http://urgent.fm/