Re: [Mjpeg-users] stabilisation

2005-06-21 Thread E.Chalaron
> Steve Schultz and I have been discussing your problem (it helps when he > sits three cubicles away at work). I see > One approach would be to recognize > that the movement is not always smooth and continuous, and to treat > exceptionally large motions (above a threshold) as outliers that must

Re: [Mjpeg-users] stabilisation

2005-06-21 Thread E.Chalaron
> If you could get me 20 or 30 seconds of y4m data to test with, I think > I could drum up some free time over the next week or two to get you > something that might solve this problem. already Xmas ??? :-) Will do thanks ... but take your time I am off for all of July to France. Thanks heaps E

Re: [Mjpeg-users] stabilisation

2005-06-21 Thread J Macropol
On Wed, 2005-06-22 at 09:08 +1200, E.Chalaron wrote: > > y4mstabilizer works best with 444 progressive material. > > I am working in 422 progressive. At least its closer than 420 interlaced The smaller the pixels, the smoother the motion will be. In 422, the horizontal jumps will be 2 pixels a

Re: [Mjpeg-users] stabilisation

2005-06-21 Thread E.Chalaron
> y4mstabilizer works best with 444 progressive material. I am working in 422 progressive. At least its closer than 420 interlaced > Life is short and I am very busy. Sorry.) You already take the time to reply which is great, thanks. > Hmmm... You have given the jitter *amplitude* (12 pixe

Re: [Mjpeg-users] stabilisation

2005-06-21 Thread J Macropol
Hello y4mstabilizer works best with 444 progressive material. This is fine for making DVDs, since set-top players are supposed to interlace material if required. I have had good results with a pipeline like: ... | yuvdeinterlace | \ y4mscaler -v 0 -O sar=src -O chromass=444 | \

[Mjpeg-users] stabilisation

2005-06-20 Thread E.Chalaron
Hi all Question about y4mstabilizer. I have a reel here that is REALLY old. once reshot it does show some jittering (worned out brearing in the movie camera itself ??). I have calculated about a dozen pixels for this up/down frequency. I want to compensate this but not the pannings that the camer