some clips are very fuzzy when panning

Klaus Christo · Post by **Klaus Christo** » Mon Feb 27, 2006 11:05 pm

Occasionally some clips turn out really fuzzy when there is panning going on, or too much movement. Hard to describe but the edges (of vertical lines) are sort of horizontal lines instead of straight verticals.
Then I re render the captured clip and often its ok then. I'm still not really sure which settings to use for rendering. Not sure about which video setting to use, 6000 variable seems to be the lowest, but should I use 8000 constant, or should i use two-pass encode? Would be great if someone could explain the difference.

Also can someone tell me which program is the best to view the dvd.iso file which I am doing now to save making coasters out of my dvds.

tyamada · Post by **tyamada** » Tue Feb 28, 2006 12:03 am

Try the video filter Sharpen, it should help a little. Don't go overboard on the filter and sharpen too much, you will end up with pixelated video.

You should try to make folders instead of iso images. You can use the Folders to view the video like a DVD.

If you insist on doing iso images try this:
http://www.daemon-tools.cc/dtcc/downloa ... ry&catid=5

As far as video bitrate goes, the higher the bitrate the better the quality the video but the file size is larger. I usually use a bitrate of 4400 and get very good results, It's a personal preference and up to you.

Post by **Ken Berry** » Tue Feb 28, 2006 12:51 am

The 'fuzziness', or at least the way you describe it, sounds like a classic case of the wrong field order used in capturing...

jchunter · Post by **jchunter** » Tue Feb 28, 2006 3:51 am

IMHO, you are seeing "comb" interlace artifacts. You can find a good overview of these at http://www.hthoma.de/video/interlace/#lit1. As Ken says, you may have captured with the wrong field order (analog is usually Upper Field First and Digital is usually Lower Field First).

I find that the VLC media player is pretty reliable video player. You may have to change the extension from .iso to .mpg.

Klaus Christo · Post by **Klaus Christo** » Tue Feb 28, 2006 4:19 am

Yes jchunter thats exactly what it is, 'comb interlace'. Will I ever be able to transform these videos to dvd without having to learn all this technical stuff??
Anyway I don't think the capture was the problem because I only re rendered the captured clip and then it was much better. Perhaps I should keep a record of all my capture and render settings.
Now that I think of it I may have set 'frame based' at one stage. Would it matter much if the settings of capture to render differed??

jchunter · Post by **jchunter** » Tue Feb 28, 2006 4:37 am

Klaus,
Yes it matters. Best results happen when the video is first captured with the proper field order and that field order is continued through all stages of editing right through to the DVD stage. My advise is to capture again with the right field order.

Klaus Christo · Post by **Klaus Christo** » Tue Feb 28, 2006 10:27 am

ok, thanks, I certainly hope everything will turn out to be that simple

sjj1805 · Post by **sjj1805** » Tue Feb 28, 2006 11:52 am

Klaus Christo
Just to make sure we are looking at the correct issue.
The problem you mention of fuzziness and vertical lines - does this relate to a video (ie from your camcorder) in which case as mentioned above you may have the wrong field order selected.

OR

Are you talking about a still photograph (scanned or taken with a digital camera) and you have applied a filter to zoom in and move across the picture to create movement. If this is the case you may have selected the crop filter rather than the pan and zoom filter. Either can be used but the pan and zoom filter will produce cleaner results.

Steve J

jchunter · Post by **jchunter** » Tue Feb 28, 2006 3:21 pm

Klaus,
Note that incorrect field order can aggravate interlace artifacts but you will still see them in reduced form even when capturing with correct field order. There are various (complicated) ways to reduce these artifacts. Here is a link to an excellent treatise on interlaced video as well as techniques for deinterlacing. http://www.100fps.com/ Note that the author lives in PAL country. If you are in NTSC land, you have to make the proper substitutions: e.g., 30fps vs 25fps, 720x 480 vs 720x576, etc.

Klaus Christo · Post by **Klaus Christo** » Tue Feb 28, 2006 9:34 pm

wow jchunter, mind boggeling. Luckily I'm in Australia so it makes a little simpler when reading that information. Don't know if I'm quite ready for that large a learning curve right now. But thanks anyway i will keep a copy of that web page and consider it very strongly, especially for those priceless videos.