I have a Hauppauge WinTV-card. I experience huge interlacing problems with the WDM-driver. It prevents me from using it. So I asked myself the question: "What is the cause of the interlace problem?". Is it the WDM-diver? Or the capture-program? Or the graphics card driver?
I have done thorough testing with the VFW-driver, WDM-driver and all kind of capture-programs, settings etc.
The results are quite clear (and undeniable, in my opinion):
- The interlacing problems are definately due to the WDM-driver!
- The VFW-driver has no interlacing problems.
- The PQ of the VFW-driver is less than of the WDM-driver.
- The WDM-driver is faster when used for recording tv-programs.
- The WDM-driver does not support the highest PAL-resolution (768 x 576), the VFW-driver DOES support this resolution.
- With ShowShifter in combination with the VFW-driver there's a tv-channel tuning problem, resulting in not-fine-tuned channels and hence even worse PQ (and SQ).
Summarizing: the WDM-driver is faster and has a better PQ than the VFW-driver, but it has terrible interlacing problems and it doesn't support 768 x 576 resolution. The VFW-driver has no interlacing problems and supports 768 x 576 resolution, but has a lower PQ than the WDM-driver and is slower. And it has a tuning problem with ShowShifter.
So at the moment there is NO way to capture at the highest resolution with the highest PQ without interlacing artifacts.
This frustrates me A LOT. I'm waiting and testing for a year now, constantly hoping for better drivers which solve all the problems, but so far IN VAIN.
It's such a pity, the card is perfect. The PQ CAN be excellent (proved by the WDM-driver), interlacing CAN be solved (proved by the VFW-driver) etc... but STILL there is NO perfect solution!
I've read that ATI is also famous for their flaky drivers. What is it with those hardware vendors? They produce great hardware, but their drivers are sh.. Don't they realize that this pisses customers off (excuse moi) and that it is very bad publicity for their products?
Mkanet, if you read this, can you PLEASE contact the Hauppauge engineers again and explain them the problems. I've tried several times to contact them, but got no response at all. I'm getting desperate...
I know that the previous thread about the WDM-driver raised a lot of confusion, but I'm convinced my testresults are correct.
Some hardware info:
1 GHZ Athlon cpu
128 MB memory
Abit KT7A mobo
Maxtor 40 GB 7200 rpm hd
Matrox G450 DualHead graphics card.
(BTW, I've tested the capturing with the MJPEG and Divx4 codecs).
Regards,
Johan
I have done thorough testing with the VFW-driver, WDM-driver and all kind of capture-programs, settings etc.
The results are quite clear (and undeniable, in my opinion):
- The interlacing problems are definately due to the WDM-driver!
- The VFW-driver has no interlacing problems.
- The PQ of the VFW-driver is less than of the WDM-driver.
- The WDM-driver is faster when used for recording tv-programs.
- The WDM-driver does not support the highest PAL-resolution (768 x 576), the VFW-driver DOES support this resolution.
- With ShowShifter in combination with the VFW-driver there's a tv-channel tuning problem, resulting in not-fine-tuned channels and hence even worse PQ (and SQ).
Summarizing: the WDM-driver is faster and has a better PQ than the VFW-driver, but it has terrible interlacing problems and it doesn't support 768 x 576 resolution. The VFW-driver has no interlacing problems and supports 768 x 576 resolution, but has a lower PQ than the WDM-driver and is slower. And it has a tuning problem with ShowShifter.
So at the moment there is NO way to capture at the highest resolution with the highest PQ without interlacing artifacts.
This frustrates me A LOT. I'm waiting and testing for a year now, constantly hoping for better drivers which solve all the problems, but so far IN VAIN.
It's such a pity, the card is perfect. The PQ CAN be excellent (proved by the WDM-driver), interlacing CAN be solved (proved by the VFW-driver) etc... but STILL there is NO perfect solution!
I've read that ATI is also famous for their flaky drivers. What is it with those hardware vendors? They produce great hardware, but their drivers are sh.. Don't they realize that this pisses customers off (excuse moi) and that it is very bad publicity for their products?
Mkanet, if you read this, can you PLEASE contact the Hauppauge engineers again and explain them the problems. I've tried several times to contact them, but got no response at all. I'm getting desperate...
I know that the previous thread about the WDM-driver raised a lot of confusion, but I'm convinced my testresults are correct.
Some hardware info:
1 GHZ Athlon cpu
128 MB memory
Abit KT7A mobo
Maxtor 40 GB 7200 rpm hd
Matrox G450 DualHead graphics card.
(BTW, I've tested the capturing with the MJPEG and Divx4 codecs).
Regards,
Johan