clip from a movie which has horizontal black lines which vary their location when the scene changes. There's also a constant row of short vertical lines (not black, but like embossed) along the bottom edge (which can be seen in the clip where the bottom edge is whitish).
Has an AMC screen bug, so probably broadcast via satellite/cable connection. Probably recorded with a vcr, then recorded to dvd with dvd recorder (and dubbed again from that dvd). Was the problem from the original connection?
clip.avi
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Last edited by spiritgumm; 29th Mar 2012 at 08:03.
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Was the problem from the original connection?
I would guess:
1. captured from a VCR with low quality cables and a not so clean head which also requires a general overhaul
2. badly deinterlaced or resized before deinterlacing
3. bad choice in MPEG-4 ASP settings
-> I don't think any one involved in the process of the creation of this file either knew what he was doing or really just wanted to do a crappy job,... (I would simply delete the file ) -
actually I made the xvid - I was only inquiring about the horizontal and vertical lines.
My avisynth script order: IVTC'ed it (TFM/Tdecimate), cropped it, then resized with Spline36(640,480). I calculated the bitrate for .2 bpp which I've read is very good. 77 minute movie came out to about 1 GB.
My dvd copy was unfortunately made from another dvd using stand-alone equipment (player to recorder) instead of duplicated. I dont know if that is causing some of the issues you are attributing to the xvid? -
1st 0.2bpp does say nothing when not looking at the source. Your video has macroblocks all over it, and a lot of aliasing and other problems,... no clue if they are present in the source or if you caused them.
about the horizontal lines, these were probably caused by in the VCR -> to digital copy process. -
I can tell a dvd player-to-dvd recorder copy pretty quickly - slightly choppy playback when I chapterforward. It also has a "look" to it which might be aliasing.
I also grayscaled it, but was just trying to make a good basic xvid (no major filtering). Would you mind taking a look at the (approximate) same scene from the original video?
VTS_01_1.mpgLast edited by spiritgumm; 29th Mar 2012 at 10:46.
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any advice about improving the ivtcing? In general it looks okay, but in that particular xvid clip it looks choppy.
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a dumber IVTC might be better,...
bob()
selectevery(5,0,2)
since the motion in the clip hardly has anything to do with the action in the movie,.. -
thanks, I'll try it
well, didnt look too good. I suppose I could leave it at 29.97, but that makes a bigger file.Last edited by spiritgumm; 29th Mar 2012 at 12:06.
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