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View Full Version : Capture Noise Help w/Example.

iamsparticuz
4th June 2002, 07:48
It appears that when I capture from a few channels there are lines that run through the screen. I have included an example of a capture I did of seinfeld encoded using the divx 5.02 codec.
VIDEO (http://www.rufuz.com/downloads/test.avi)

I have cable tv but it is not digital.

I originally captured the vid @ 640x480 resolution and I used the MJPEG codec @ 19 quality. The audio was originally cap'd @ 44.100 khz 16 bit stereo. After I was done, I re-encoded the vid using divx 1st pass @ 1000kbs using the deinterlace filter as blend and then i applied a temporal smoother @ a setting of 4 and the smoother filter @ a setting of 500. I also compressed the audio to 44100 khz, 128kbs CBR Stereo w/lame. The end file size was about 168 megs. Im happy with the quality of this method so far, I would still appreciate other suggestions. I don't know if it is possible to get rid of those lines or atleast hide them, once again they only appear on a few channels, the rest are fine.

BTW : Ive got a wintv pci capture card. I can't cap @ a higher resolution without getting a green bar on the bottom, im not sure if thats only w/the format type or what. Im using the drivers from http://btwincap.sourceforge.net/ .
iamsparticuz
4th June 2002, 21:42
plz check the vid.
avih
4th June 2002, 23:19
can u just post links to images of specific frames with these lines? ppl may be too 'lazy' to download 5+M of avi just to see few lines acroos it ;)

cheers
avi
iamsparticuz
5th June 2002, 01:16
http://www.rufuz.com/downloads/test.JPG

It might be a little hard to see the lines, its a bit more obvious in full screen. Thats why I uploaded the video, its only 5 megs :rolleyes:.

Anyways the areas that i circled containe small lines that run through the screen due to the low frequency (im guessing?) of the channel. Its like this on the tv too(obviously). I was wondering if there was a filter that would make it less obvious or that would sorta patch em up due to the channel.
ppera2
5th June 2002, 23:12
You have some disturbance on those channels. There is no way to completely remove it. Except that you ask from cable TV service that do something...

As I experienced Temporal Smoother is one of the best against such noise.
iamsparticuz
5th June 2002, 23:47
Yeah, temp smoother takes care of most of the noise but it doesn't get rid of those lines that run through the screen :(