Hello Steve > Which means the 'prediction' (P) frames are decaying and it's time to, > as you noticed, start a new GOP. A size of 10 is quite reasonable for > video with a lot of motion.
I don't know if it's an education thing but people were running with their camera those days !!! amazing !!! > The defaults do seem to be a bit aggressive. You might try the > values I sent via private mail. Well the use of it whatever the values was increasing the q value reported by mpeg2enc... so I just decided not to use it. > > 6/ y4mspatialfilter default values before mpeg2enc pipe > I tend to put that first in the pipeline - but I don't think that's > critical. Would you use it before a y4munsharp or after ? > > I still have to test y4mdenoise properly, but values of -t 1 -z 1 seems > > far too high. Need to learn more about its parameters. > -t 3 -z 2 might be a worthwhile set of values to try. ARRRGGLLL 50 hours to encode !! > > The option cubic seems important when using a Bayer filter, otherwise > > some pattern (Edge sens in my case) will ring a lot (see the y4mscaler > > page) Well, I actually moved from Edge Sens to Simple; make things much easier to process. > The cubicK4 (-S option=cubicK4) may be worth trying - it might be > better (but then it might not ;)) than a simpler 'cubic' scaling > kernel. I'll test separatley then, with the next roll. > Yes indeed - that conversion to/from DV was definitely not improving > the quality (and you probably noticed it added quite a bit to the > processing time :)). Well I have to swap and modify the frame speed. One more piece of code to go and I'll be fine :-) > Sounds like you're having a lot of fun No ! I ran out of room on the mpeg_ed dir .... crapped the lot ... but the frames I saw were quite good... on a Pc monitor, will wait for TV > and moving right along - keep us posted. I will, hoping this may help somebody else ... Cheers E ------------------------------------------------------- SF email is sponsored by - The IT Product Guide Read honest & candid reviews on hundreds of IT Products from real users. Discover which products truly live up to the hype. Start reading now. http://ads.osdn.com/?ad_id=6595&alloc_id=14396&op=click _______________________________________________ Mjpeg-users mailing list Mjpeg-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/mjpeg-users
