LIVE TV (1 Viewer)

[furnibird]

Long time MP using first time LIVE TV user. All running well under Win 7 with MediaPortal 1.1 ALPHA.
I am running a hauppauge HVR 2200

P4 3.2
3.25 gig ram
gigabyte GA-81945 pro
Nvidia 7800

video/audio play fine with tv card but i get a split second pause here and there and has frozen once. I am using mainconcept mpeg decoder and have tried a few others with no change. Any one have any info on what setting to use or decoder. Time shifting is set to default. Cheers

 

[globaldonkey]

I would say the Nvidia 7800 is too underpowered to run MP and HDTV.

 

[etheesdad]

are you using a dedicated drive for recording/timeshifting?

 

[furnibird]

Ok was looking at upgrade to a silent 9500 gt Thanks

Would a 4gig usb stick work and if so what is the best format.

 

[globaldonkey]

4 gig won't give you a huge TS buffer, and maybe (not sure) USB speeds could become an issue? Certainly accidental removal would have fairly catastrophic effects I would imagine. I did once try about 3gig of ram disk and wasn't happy with that. I reckon SSD has got to be the way to go if you can afford it. That's my next enhancement Two SSD's, one for the O/S and a smaller one for the TS buffer.

 

[furnibird]

What setting do you run in the tv server timeshifting tab am new to all this live tv i moved to MP from XBMC because of LIVE TV.I will not be getting a new drive anytime soon thats why i asked about the 4 gig stick as i have one.

 

[etheesdad]

I would say the Nvidia 7800 is too underpowered to run MP and HDTV.

The 7800 is ample. It has pretty much equivalent grunt to a 9500GT.

Any geforce series card with reasonable core and memory clock will do 1080p. 1080i is a little more intense but should easily pass off on the 7800GT. I have run 1080i tv on a 6100GS which is a much less powerful chipset.

 

[globaldonkey]

Yeah I reckon it would be borderline with 1080i, particularly if you threw h.264 in the mix (and I know thats not we're talking about here with aus tv). See this post from rtv. He thought an 8200 would be troublesome with 1080i and MP 1.0.1 and higher. I'm not completely familiar with the Nvidia cards, but would assume an 8200 has more grunt than a 7800.

https://forum.team-mediaportal.com/...-under-1-0-1-0-a-58486/index9.html#post470166

Also, bear in mind that there was a performance requirement hit with MPI 1.0.1 when the rendering of the GUI was changed.

On the ATI front, I do know the 4350 almost works, and the 4670 works perfectly. Not sure about the 4550, but see you're running one, so assume its ok. I think the 4670 is equivalent in performance to the 9500, and 4550 is equivalent to 9400.

What setting do you run in the tv server timeshifting tab am new to all this live tv i moved to MP from XBMC because of LIVE TV.I will not be getting a new drive anytime soon thats why i asked about the 4 gig stick as i have one.

I just use the defaults. min 6 files, max 20 files, 256MB filesize. I guess if you drop it to about 8 or 9 maximum files, you should be ok to fit it on your 4GB drive.

Here's some ramdisk guidelines you could use:

TV-Server/UserGuides/Ramdisk - MediaPortal Manual Documentation

Min files controls how far you can jump back, ie how far back you can rewind live TV, and max - min defines "max break time", which I think it means how long you can pause live TV.

I think (min + max) * filesize = total disk requirement ... or it could just be max * filesize. I'm not sure. The calcs on that page are a bit confusing.

 

[furnibird]

I dont think it is the graphic card as i can view HD movies fine. Was wondering what MP likes better ATI or NVIDIA i will update soon with a heatsink card. I set up timeshift on my 1 tb file storage drive but no change on SD or HD with default setting. I tested it under Win7 mce and works fine?. I will not be rewinding Live tv but pausing may be used.

 

[globaldonkey]

Watching 720p and even 1080p is not the same is watching interlaced content, particularly on a "heavy" gui like mp 1.0.1 and above. De-interlacing takes a lot more grunt, so I really do think it is your hardware, but happy to be proven wrong. MP has no preference for Nvidia or ATI. Conventional wisdom at the moment is that the 9400 is the minimum GPU for Nvidia, and the 4550 is the minimum GPU for ATI. I lean more to the 9500 / 4670 if you want a bit of "overhead". Using things like overclocking and efficient codecs like CoreAVC or MPC-HC with DXVA can produce acceptable results on lesser GPU's, but in IMHO it does become a more onerous process to get everything right.

If you have bit of a read through that 1080i deinterlacing thread I posted earlier, you can get a better feel for some these discussions which I think I've basically summarised here.

P.S. don't write off rewinding live TV. It's pretty cool