Recordings drop-out

[andrewj]

GB-PVR seems to work OK, and live TV is fine, but my recordings suffer from dropped frames and outages of a second or two, sometimes up to several times a minute.

This is not signal related, as live TV quality is fine and we have no problems at all with our main television which is fed from the same antenna. I have also never expereinced any similar problem with my older Adaptec analogue tuner and WinDVR software.

I don't believe the problem is hardware-related, as I have tried two different PCI cards, a KWorld DVB-T 220 and a Pinnacle PCTV Hybrid Pro. The behaviour with both is very similar.

My machine is fairly high spec, with SCSI disks, a 3GB processor and 2GB RAM.

Does anyone know what could be causing this?

Thanks
Andrew

[stf69]

I have same problem since version 98.5 (now I use 99.5)

What is your capture card?

I use Celeron 2.5GHz 1GB of ram
PVR-150 with 2.7 driver

Sub tell me it is problably a driver problem... but after I upgraded to 2.7 the problem still there

[sub]

andrewj's problem above is problem related to the mux filter he is using, or signal problems. He has a digital card, which works very differently from your PVR150.

Your PVR150 problem is most likely either just a playback problem (try different decoders), or driver problem. I'd take one of the recordings and play it on another machine to check.

[stf69]

The problem is at recording time... I try to play .mpg file on differant system with differant tool (VLC, powerDVD, ...) and the problem is there.

You can look the problem http://www.soluexpert.com/Amy.mpg
(partial recording, 18 MB file)

We are 3 friends with the same setup (computer, pvr-150, mediamvp, ...) and all experience problem (differant interval and duration)

I want to give some hint:
- When the problem occur on 1 recording, if I have another recording at the same time (2nd tuner and PVR-150) this 2nd recording have same drop-out frame at same time (ex: 10 minutes after show start)

- I tried to use 100% CPU and/or lot of disk acces to see if the problem occur during hi utilisation... no problem during this test

- The system is dedicated to GBPVR, no other software run on it


Thanks for your help, I very appreciate.

[sub]

Yeah, thats odd. It could only be the drivers or the device itself causing this.

Have you applied the PVR150 timestamp fix? It could be somehow related to this. See http://forums.nextpvr.com/showthread.php?t=14006

[stf69]

Yes timestamp register modification is done on all 3 systems

1 difference between system is the model of PVR-150
some are with 1042 and other with 1045

But I dont thing all 6 PVR-150 is bad.

Does some information about drop-out are in log file?

[sub]

No, there wont be anything in the GB-PVR logs. The data that comes out of the PVR150 is written straight to disk without GB-PVR doing any processing on that data. GB-PVR doesnt know anything about the contents of that data at recording time.

I suppose its possible some chipset or shared IRQ problem could be a factor. Other than that, I cant really think of anything specific to look into.

I'm sure this fault isnt of GB-PVR's making.

[andrewj]

Sub,

Any ideas about my problem (first post)? It's definitely not a signal problem, and seems to occur with the default MS mux, and also the Intervideo and Cyberlink ones.

Do you need any other info?

Thanks

Andrew

[sub]

What does the output of mux checker say on your machine?

[andrewj]

Dear Sub,

It reports:

[INDENT]GB-PVR has detected the following multiplex filters on your machine:

Found: InterVideo Multiplexer
FILE: F:\Program Files\InterVideo\Common\Bin\ivimux.ax
VERSION: 3.0.79.81

Found: CyberLink MPEG Muxer
FILE: F:\Program Files\Cyberlink Multiplexers\THMpgMux.ax
VERSION: 5.0.2022

If you're running WinXP SP1 or higher, you will also be able to use the built-in DVR-MS mux filter[/INDENT]
I am running WXP SP2, so I also have the MS Mux.

Thanks
Andrew