Help with TV signal in using Hauppauge 1250

[jules-57]

Here’s the problem:

Optiplex 745
Win7 64 bit
Hauppauge 1250 tv card

I am trying to output the tv signal from my uverse box usingthe box’s video out to my video in (not s vid) in the Hauppauge card to watchand listen to TV at the same time while viewed on my Samsung tv. It works, but there is a 1 second delay whichcaused the sound and image from the tv to not synchronize with the computerimage.
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I have done this same thing in the past with a Hauppauge tvfm card without a problem running win xp.Now when upgrading to win 7 this problem occurs.
I don’t know what else that can be done. Please help.

[usually_quiet]

I'm not sure what you mean by this. Do you mean you experience an echo-like effect while watching the output from the UVerse box on both your TV and on your computer monitor and speakers at the same time? If that is the case, based on personal experience, I don't think it is possible to eliminate the delay you describe using a TV card with a Windows 7 system.

I have Windows 7 and have used a few different TV cards (one from Hauppauge and three from ATI) and a few different TV viewing programs. There is normally a delay when comparing the picture and sound on the PC to the picture and sound for a direct connection from a set-top box to my TV in the same room. The amount of delay varies depending upon the TV viewing software used, but it is always there.

[jules-57]

Thank you. Do you think this is true even though I was able to do this with win XP? is this the result of win 7?

Just to clarify:

If I watch and listen to the tv viewing my samsung, and watch only on the PC, the PC signal is delayed by about 1 second.

Jim

[jagabo]

If the card has a hardware MPEG 2 encoder there will always be a delay between the live feed and the captured video. There may be a registry setting to reduce the driver/software buffering. I know there was with the PVR-250. There will still be a little lag (inherent in the hardware encoder) but it won't be as much.

WinTV7 has a "game mode" setting to reduce the delay.
http://www.hauppauge.com/site/support/support_hvr1250.html

[usually_quiet]

The WinTV HVR 1250 relies on software encoding, so the delay the OP sees isn't caused by a hardware encoder getting in the way.

My ATI TV Wonder HD 600 USB also does software encoding, and produces a delay of at least a second even watching TV without capturing. (The delay varies depending on the software used.)

I think the delay is a driver or Direct Show issue.

[jules-57]

If the card has a hardware MPEG 2 encoder there will always be a delay between the live feed and the captured video. There may be a registry setting to reduce the driver/software buffering. I know there was with the PVR-250. There will still be a little lag (inherent in the hardware encoder) but it won't be as much.

WinTV7 has a "game mode" setting to reduce the delay.
http://www.hauppauge.com/site/support/support_hvr1250.html

That was it!!! setting to game mode removed the delay. Thank you very much for your help!

Jim