playing TV when mediocre DVB reception

[cybermaus]

Hi

I have doubtfull fortune of living at the fringe of 3 separate DVB-T tranmitters which deliver the same content. (Dutch Digitenne). So I get them all equally good, or equally mediocre as the case is, and sometimes equally bad, depending on the weather.

After testing with GBPVR for quite a while, and reading a large chunk of the forum, wiki and FAQ, I come to the conclusion that GBPVR does not deal well with artefacts. Of which I have plenty in the signal.

I have done the quartz.dll thing, in fact, checked all the items in TweakPlayback and more.

The following is what I observe:
- Sometimes (often) the playback is extremely choppy, even though CPU is not too high.
- Even if I record, and then play back the recording, it is still choppy.
- When I rename the recorded .ts to .mpg, and play it with WMP, it does play without choppyness. I see a lot of artefacts, but a continuous video.
- At the sections where in WMP the artifact increase, in GBPVR the choppyness increases
- Also Hauppage native app plays the same channel with artefacts, but no choppyness.


So far, I have replaced the quartz.dll, used the various playback codecs and renderers. I also tried the various stream (de)multiplexers but believe the WMP playback proves that is not the problem. I also deselected and deinstalled multidec. I could buy and place a directional high gain Yagi antenna on my roof, but I want to avoid that if possible.

I welcome any other idea's, but suspect GBPVR may benifid from debugging the playback mechanism when dealing with artefacts

I have XP on a 2.6Ghz P4 with ATI Radeon 9100 and a Hauppage Nova Dual DVB-T. All latest drivers, except where they have known issues (quarz.dll & usbehci.sys, and yes, I am certain I successfully replaced those)

Greetins
Maurits

[stustunz]

an amplifier maybe
but really the best bet is a decent antenna

[cybermaus]

An good antenna is always adviseable of course, except that I already made that suggestion myself and try to postpone that.

Maybe I should frase my question different:

Surely GBPVR is able to work with a perfect signal, but equally surely everyone must have a few artefacts from time to time. My signal has a lot of artefact, but is still very watchable when using settop boxes.

So, to ask the question differently: Is it normal that every, even small, artefact (when viewed with WMP) turns into a half-black frame (when viewed with GBPVR), or is there something special happening here?

[Graham]

It may be that WMP is using a different video decoder to GBPVR.

Have you selected a video decoder in config.exe or left it on System Default?

Do you have more than one video decoder installed? You might try uninstalling one decoder at a time until you find the one that works in WMP. Then re-install and specify that decoder in config.exe.

Good Luck

[cybermaus]

When replaying the recording, not via recordings but via video's, I could play both the *.ts recording and the copied/renamed *.mpg file.

And GBPVR plays the *.mpg file correctly, but the *.ts still freezes. Regardless of the MPEG2 playback selection

Which lead to the idea that GBPVR does not follow the MPEG2 playback selection for *.ts file. So I used ffdshow to put all MPEG content to libav on a system level.

And see: Success. Now GBPVR also plays the artifacts without freezing