Capture loss from VHS

[silenttalk]

I have an Athlon 1.4 512mb RAM & 7200rpm hdd and a Hauppage Win TV PCI. I am able to capture at 352x288 24 bit and use divx to compress.

This works fine from its tv tuner / satelite channel but if i select the chanel for the VHS video recorder, which is conected in on the main cable run I get 40% frame loss.

I am using virtual dub 1.4.7

The video picture even looks jerky in the preview pane before I start capturing.

Any ideas ???

[Zulutrax]

What kind of cable are you using?

If I understand you right you don't have any problem capturing from the tv-tuner card, but when you try to use the s-vhs or composite channel on the tv-tuner, you run into problems?

[silenttalk]

No im not using composite / svs, this is pure;y on the RF Coax cable

[dirk67]

I have the same problem with some videos. On older videos (or lower quality tapes) I get up to 30% lost frames, better recordings yield to a loss of only 0.1%. I asked this question a couple of days ago, the problem seems to be that the capture card somehow cannot synchronize to the fields for bad/old recordings.

[FM]

Practically it means that synchro signal is not strong enough. This is acceptable for old movies. TV does not care much about it since it, but capture cards do care.

[silenttalk]

FM

Would a shorter RF cable help, the one im using at the moment is about 10m, or would a booster also help

[Shabubu]

I would really try capping in YUV, and use MJPEG or HUFFYUV (I think DivX can work in YUV, but I'm not to sure). The WinTV card is working in YUV, then your com has to convert to RGB, this takes a lot of power and you'll lose quality. So your better off sticking in the video's native format.