Hi I had a quick try with tvtime. It works alot better! Full screen mode looks alot better and a few minutes of fiddling revealed that the Linear blending deinterlacing mode almost removes the lines (not perfect yet but it's much more watchable now). I am also able to capture perfect-looking frames to jpeg now. Still need to sort out alot of other issues, and do some proper testing, I just thought I'd reply and let you know the progess I've made :-) Whats interesting is that the windows drivers+software that LifeView supplied with the card *didn't* work, so I didn't spend more than 10 minutes in windows, and just downloaded the linux driver. Thanks for your help Simeon. On Sat, 5 Apr 2003, Billy Biggs wrote: > Simeon Miteff (smiteff@xxxxxxxxxxx): > > > When using xawtv with my LifeView Flyvideo 3000 I get regularly spaced > > horizontal blurred lines across the image. These lines appear on parts > > of the frame that are changing (ie, where a person is walking). The > > lines are less apparent when the image is smaller (scaled down by > > dragging the window to a smaller size). > > > > I've tried upgrading the saa7134 driver, upgrading xawtv, and fiddling > > with just about everything I can find (like trying different Capture > > modes), but nothing seems to make this problem go away. I've also read > > through the list archives and haven't found anyone with a similar > > problem. I apologize in advance if this question has in fact been > > answered before. > > You're likely seeing artifacts relating to the interlaced nature of > the video source being displayed without framerate conversion. How > about you try using a TV viewing application which can perform some sort > of deinterlacing. I am the author of 'tvtime', an app which does this: > > http://tvtime.sourceforge.net/ > > A raw interlaced frame looks like this: > http://tvtime.sourceforge.net/screenshots/27-oct-02-interlaced-75.jpg > > Is that what you are seeing? > > Regarding the saa7134 driver, I recommend you use the latest snapshot > as it fixes some known bugs in the 0.2.6 release of the driver. > > > http://www.cs.up.ac.za/~smiteff/tv/ tv1.jpeg <- captured with xawtv's J > > function. Shows black lines. These black lines appear in the captured image > > regardless of how big the xawtv window is resized. > > I have no idea what might be causing this. > > > I'm using saa7134 version 0.2.6 with xawtv 3.86 on linux 2.4.18 with > > XFree86 4.2.0 and NVIDIA_kernel-1.0-2960. > > As a warning, I recommend against using xawtv's 'overlay' mode with > the nvidia drivers in particular, it is unsafe due to a flaw in the > design of 'overlay' mode, and we have seen odd behavior as well as > system crashes both before, and after running xawtv in overlay mode. If > you must use xawtv, use its XVideo mode (X "v4l" module) or grabdisplay > mode. > >
