I've recently purchased a large HD and have started recording raw images. I just wasn't happy with the various codecs I'd been using to record.
What I've found is yuvkineco worked better on the material that had undergone lossy compression than it works on the raw-recorded clips. It seems to really have problems holding to a consistent pattern - for example it may have a stable pattern of O_OO O_OO O_OO, etc for a while, then hit a part where it'll seem to get lost without a scene change happening: OOO_ O_OO OOOO O__O, etc. which causes a lot of fluctuation in motion. I particularly notice this on darker scenes. I tried running yuvdenoise before yuvkineco (BTW, yuvdenoise seems to work MUCH better than I'd observed it about 9 months ago...not sure if it is because of the raw recording or because of improvements in yuvdenoise - perhaps both...) and that seems to make it even worse. I realize there are all sorts of combinations of -n and -c that I can use. I'm using -c 4 and -n 6. yuvkineco reports a noise level of 5, so I also tried -n 5 (BTW, does the noise level yuvkineco report have anything to do with the noise level passed on the command line?) I've also tried -c values of 8, 10, 12, 16, and 24...what I found is it never seemed to make a bit of difference what I pass - seems to come out with identical behavior no matter what I pass :-( Prior to using raw recordings I was getting near-perfect results from yuvkineco - maybe notice 1/2 second of bad motion over a 2 hour movie. Now I'm seeing 1 to 2 seconds of bad motion about every 5 to 10 minutes. My assumption is compression had been taking care of some sort of noise that is now there all the time for yuvkineco to deal with, although the noise level reported in the output list file runs around 5 now compared to the 12 I was seeing before. Any ideas what might be causing this and/or how to compensate for it? I'm using 1.6.1.92. -- Ray -- Ray ------------------------------------------------------- This SF.net email is sponsored by: IBM Linux Tutorials. Become an expert in LINUX or just sharpen your skills. Sign up for IBM's Free Linux Tutorials. Learn everything from the bash shell to sys admin. Click now! http://ads.osdn.com/?ad_id=1278&alloc_id=3371&op=click _______________________________________________ Mjpeg-users mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/mjpeg-users
