>I have troubles using the "active" option from y4mscaler, >When I specify a region : the output is nill, getting rid of the -I active >and I have something >here is my comand line : > >(find . -name \*.ppm | xargs cat) | ppmtoy4m -F 25:1 -L -S 420mpeg2 | \ >yuvdenoise -F -r 16 -t 2 | y4mscaler -v 0 -I active=1138x850+78+40tl \ >-S option=sinc:5 -O sar=PAL -O size=720x576 -O chromass=420_JPEG | \ >y4mtoppm | ppm2raw -v 0 -a -2 > ../file.dv
(A reminder to everybody: to diagnose a bug/problem, you need to email both the complete command-line that produces the problem, as well as the complete log output --- all that information is there for a reason!) Hi, E, I'll respond to your logs in the next email, but for now, another suggestions: Since you are essentially converting PPM->Y4M->PPM, use 4:4:4 sampling the whole way. E.g. 'ppmtoy4m -S 444' and leave off the '-O chromass=...' for y4mscaler. PPM is not subsampled, so it is silly to remove information from the chroma channels first (by subsampling to 420mpeg2 (and with a poor filter, as ppmtoy4m does)), and then distort/remove more information (by resampling to 420jpeg), and then try to reconstruct that information (poorly, as y4mtoppm does its upsampling). (All these are reasons why 'pnmtoy4m' and 'y4mtopnm' don't do any up/downsampling whatsoever. :) -matt m. ------------------------------------------------------- This SF.Net email is sponsored by: IntelliVIEW -- Interactive Reporting Tool for open source databases. Create drag-&-drop reports. Save time by over 75%! Publish reports on the web. Export to DOC, XLS, RTF, etc. Download a FREE copy at http://www.intelliview.com/go/osdn_nl _______________________________________________ Mjpeg-users mailing list Mjpeg-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/mjpeg-users
