On Monday 14 April 2008 11:01, Burkhard Plaum wrote: > There is one potential issue, which could be involved here: The YCbCr formats > in MPEG and JPEG are differently scaled: In MPEG, the luminance is 16..235, > in JPEG it's 0..255. > Last time I looked, quicktime4linux didn't distinguish between them. > It can well be that mencoder doesn't get this right as well. The results > are images either too bright or too dark. > > Burkhard
I think mencoder does it right. The original movie I used, was itself encoded from separate PNGs; it was a rendered sequence from Blender3D. When I overlay one of the original PNGs with the paused avi, and switch between them, I can't disscern a difference; they look exactly the same. When encoding, mencoder says this: SwScaler: BICUBIC scaler, from rgb32 to yuv420p using MMX2 SwScaler: using 4-tap MMX scaler for horizontal luminance scaling SwScaler: using 4-tap MMX scaler for horizontal chrominance scaling SwScaler: using 1-tap MMX "scaler" for vertical scaling (YV12 like) I've come to know mencoder as a very good encoder, hence the reason I prefer to render to images in cinelerra and blender, and encode them with mencoder. _______________________________________________ Cinelerra mailing list [email protected] https://init.linpro.no/mailman/skolelinux.no/listinfo/cinelerra
