[mythtv] Preview Images all blank in MythTV v0.21

[Albert Graham]

Hi

I recently upgraded from 0.20.xx to 0.21:

version info:

MythTV Version   : exported
MythTV Branch    : tags/release-0-21
Library API      : 0.21.20080304-1
Network Protocol : 40
Options compiled in:
 linux release using_oss using_alsa using_arts using_jack using_backend 
using_dbox2 using_directfb using_dvb using_frontend using_hdhomerun 
using_iptv using_ivtv using_joystick_menu using_libfftw3 using_lirc 
using_opengl_vsync using_opengl_video using_v4l using_x11 using_xrandr 
using_xv using_xvmc using_xvmcw using_xvmc_vld using_bindings_perl 
using_bindings_python using_opengl using_ffmpeg_threads using_live

Now all my preview images in mythweb are blank - but not black, they 
vary in color but are usually dark or pastel, so for example, first 
preview of a recording is pale grey, next is pale brown, pale green etc..

Anyway, that's in the MythWeb interface (recorded programs), I noticed 
that the same colors for all the images are in fact the same colors as 
the 1st frame of the preview movie when I goto "select a recording to 
watch:" screen ?

The strange thing is, I ask MythTV to capture the image/previews from 
200 seconds from the start (via View Recordings (4/9) setup page - but 
it does not seem do that!, maybe it just grabs the 1st frame which 
happens to be some random blank color, here is a link to a screenshot 
that better describes but I'm seeing.

http://www.g-b.net/mythtv-blank.png

So, I may be doing something wrong, but this did all work fine in 0.20 
version!


I have deleted all the images, which are automatically re-generated next 
time you view the list, but the same blanks are regenerated!.

Any advise ? TIA.


Albert.