[mythtv-users] PVR-250 live tv and recording playback goes slow

[Roy Hooper]

I recently upgraded to a PVR-250 from an ATI TV Wonder VE and am 
impressed with the quality of the recordings... however, there are some 
serious problems with playback since the switch.  These are driving my 
wife nuts.

I am running on CVS from Sep 7th.
I have my bitrate set using:
/usr/local/sbin/ivtv -c bitrate=4500000,bitrate_peak=6000000
NVidia MX440SE with 4363 drivers (same problem with 4496 drivers).

The problem is that video playback often gets very seriously slow, yet 
the CPU is not being consumed much when this happens.  Whenever live TV 
is selected, initially, the playback is slow (around 1/10th speed for 
1-2 seconds) then picks up to full speed shortly after that.  If 
channels are changed, the slow playback comes back and stays.

When playing recordings, sometimes when resuming a recording whose 
position has been saved, it starts slow.  The only way to get full speed 
is to exit out of the recording and re-enter.  FF/RW can trigger this as 
well.

This doesn't affect playback of RTJpeg or MPEG4 files.

Any ideas?

Cheers,
Roy