Certain Channels Stutter

[mattdid]

I am new to npvr. I am having issues with certain channels while watching live TV. The majority of channels work perfectly and without issue, however some channels, (comedy central HD for example) stutters in both video and audio. My setup is as follows, win 8, i7 using intel integrated graphics 2000, ceton pcie tuner. I have the network tuner plugin setup with SageDCT and I am using SAF6 for the decoders. I have tried varied combinations of decoders yet that has not solved the issue. Currently I am using PDVD12 (video MPG2) and LAV (audio ACC). I have tried varying the buffer time however that does not fix the issue. When viewing the tv buffer ts files the comedy central ones will not play in windows media player(other channels will), however will play in MPC-HC. In MPC-HC they contain the stutters. I assume that means that there is something different with file formats and it maybe a decoding issue? Anyone had the same issue or have an idea, appreciate the help.

[mvallevand]

For NextPVR make sure you have the R2 patch and also this newer tsreader http://forums.nextpvr.com/showthread.php...post451728 If it's a problem in mpc-hc also I suspect the file or hw is the problem, could you put a 50-100MB sample on dropbox or something similar so we can check.

Martin

[mattdid]

Matin,

thanks, I have the R2 Patch installed and just updated the to the newer tsreader. Unfortunately still having the issue, however it appears it is smoother in mpc-hc. In MCP-HC When there is a strange audio artifact or the video is pixelated that is when live tv was freezing. Will PM dropbox link, to clarify.

thanks,
Matt

[mvallevand]

Thanks, I got it. That definitely looks like it is signal quality related pixelization. Do you have a splitter or 2 you could remove?

Martin

[mattdid]

No splitters, just my modem and this tuner card. Anything i could do or get to improve signal quality(booster?) Also does this explain why the captures from the channels with issues will not open in standard windows media center while the channels do not stutter do open?

[mvallevand]

If you have it hooked up to mce I think you can see signal strength. My experience with my stb and pixelization on specific channels was fixed by the cableco replacing the cable and adding an amp.

Martin

[mattdid]

great idea, did not know you experience a similar issue. Will contact the cable company. Looks like the signal level is -13.9 dB with an SNR or 31.1dB any idea what yours was before and after the fix by the cableco

[mvallevand]

Since the changes I am about -7db

Martin

[mikeh49]

You can look at the web interface of your modem to see what it thinks the signal strength is, the address might be 192.168.1.100. You can check with the forums on dslreports.com to get some ideas on what you should have. There should be a forum specific to your cableco and maybe your modem. I had low signal and the cableco put in an amp that fixed it.

[mvallevand]

Just because you have good modem strength doesn't mean that all channels are going to be okay. Digital channels take just 6mhz of the spectrum and even with highspeed internet they only assign 4 channels or so for internet. When squirrels ate through my cable sheath I completely lost some channels but others were perfect and it wasn't HD or SD related.

Martin