[MPlayer-users] Linux port of Donald Graft's "Decomb" deinterlacer for mencoder?

[D Richard Felker III]

BTW, try -vop pp=md. I just had really nice success with it on
material that all the other deinterlacers screwed up badly.

Rich


On Fri, Jan 17, 2003 at 11:34:26PM -0600, John Evans wrote:
> [Automatic answer: RTFM (read DOCS, FAQ), also read DOCS/bugreports.html]
> Hi All,
> 
> I am looking for a good postprocessing utility for mencoder. My encodes 
> look great using the Decomb postprocessing to deinterlace certain TV 
> series on the Windows side but look like **** when I use mencoder pp=lb 
> on the Linux side. I have proof of this in the form of sample encodes 
> using both Virtual Dub and Mencoder. I will send the samples to anyone 
> who requests them since they are too large ( ~1 MB each ) to post here. 
> The problem is that there are 2 good frames followed by 2 blurred frames 
> ( looks like 2 different fields that are combined into 1 frame ). It can 
> be shown best by my samples but here is a diagram of what is happening.
> 
> frame 1 >>  |  1  |  2  |  3  |  3  |  4  |  5  |  6  |  6  |  7  |
> frame 2 >>  |  1  |  1  |  2  |  3  |  4  |  4  |  5  |  6  |  7  |
> 
> Each number represents a different field. Numbers between the pipe 
> symbol represent a frame. Numbers that are the same between frames 
> represent the same field data as the previous / next frame. I have tried 
> the "il=" command to attempt to swap field order with the same results. 
> I have also tried 29.97. I just get more blended frames. Using 27.97 
> with Decomb yields all fields matched with a duplicate frame every 5 
> frames. So 23.976 is correct in this case to get fluid motion.
> 
> Sample script >>
> 
> mencoder -v -mc 0 -o UFO_109_1780_23.avi -oac copy -aid 128 -ovc lavc 
> -lavopts vcodec-mpeg4:vbitrate=1780:vhq:vqmin=2:vqmax=3:keying=500 -ofps 
> 23.976 -ni -vop crop=632:480:3:0,scale=640:480,pp=lb -sws 2 ./UFO109.vob
> 
> -- I did the entire series using the same script ( except for names, 
> crop, etc. ). Episode 109 was the only one with combined fields. I used 
> a similar script for Capatin Scarlet series which resulted in 2 episodes 
> with combed frames and all episodes of Thunderbirds were combed.
> 
> The source for Decomb can be found in the links at
> 
> www.shelob.mordor.net/dgraft/news.html
> 
> Thanks in advance for any solutions,
> 
> John
> 
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