2009. 05. 11, hétfő keltezéssel 00.58-kor Eduard Refinius ezt írta:

> And last, but very important fact:
> I connected my antenna cable with VCR and VCR with PVR-150. So PVR-150 had 
> television signal
> which went through VCR.
> Than I watched TV using PVR-150 and switched channels using ivtv-tune. No 
> interference!
> Great picture quality watching TV!
> 
> This bad interference only occurs with PVR-150 and VHS recordings combined.
> Do you understand?
> Does VHS recording deliver a little bit different signal compared to TV 
> signal?
> Should I try this scart-->s-video Adapter between VCR and PVR-150:
> http://id1402.de/98.jpg

Sorry, I can't help resolving the problem myself, but there must be
something non-trivial with the combination PVR-150/VHS (or maybe simply
the Composite input handling code). My problem was/is that the PVR-150
fails to sync to the frequency of the OSD screen (the picture you see
when the VCR is on but did not yet press the Play button) with the ivtv
driver but not under Windows. What is even more strange, the recordings
made with the tape playing are OK though. We had a discussion with Andy
and he suggested to run a series of tests but it did not improve the
situation.

I think your problem is maybe related to mine and both are related to
the cx2584(0-3) module. Perhaps a bit/byte needs to be changed in one of
its registers? Recently I read on this list there are forthcoming
changes affecting this module, I will redo some tests when the change
will be incorporated into the v4l repository.

Levente

PS: On a side note, last December Alexander Pipelka was trying to encode
without B-frames with his PVR-150 and he failed (as well as me). Here
again the cx25840 was possibly the culprit.




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