Hi Herman I just checked the output it says 16 bits not 8. Not sure what you mean by the debugging ... do you mean the RGBA float in Cinelerra is buggy ?? How about changing the RGB output in the script for exr ? I understand Cinelerra is working fine with EXR
As for the LUT this is what I want to achieve with a new plugin based on this script. Did you have a look at the new version ? negfix8 ? it can actually create a profile you can apply to a serie of frames. Unless I grab the flags from the EDL, create a profile for each of them, do a bash script based on frame numbers. But that would be outside cinelerra and way more data to manage. Having it to work would be such a bonus .... gosh .. Cheers E Cheers E > > Hi Herman > > > > Yes this is what I am usually doing, but results are > nowhere close tothis script, maybe what I need is an > improved version of the histogram,with possibility of > calculating a profile curve etc.... not too sure yet. > > It looks like the script outputs 8-bit RGB. Quality > film compositing > should rather be done in Cinelerra's RGB(A) FLOAT colour > format. > But that needs some debugging, it seems ;-( > > Besides, two log() operations per pixel?! No wonder > it takes a second > each frame! You'd better fill up some look-up tables > first, and use > them, since there will be far less unique pixel values than > there will > be pixels in a frame. > > And SIMD optimisation will probably be worthwhile, too > (MMX, SSE, etc.) > > > > Is there an API for creating video effects ? I vaguely > remember that. > > I have dabbled with video plugin writing, and the most > advanced effect > that I got working properly was a random noise > effect. It was fast > enough for HDV video. A simpler effect was a YUV > sepia toner (RGB is > much harder and slower). > > I even did some rudimentary SIMD (via gcc's builtins), and > it did > speed things up a bit. > > --Herman Robak > > _______________________________________________ > Cinelerra mailing list > [email protected] > https://init.linpro.no/mailman/skolelinux.no/listinfo/cinelerra > _______________________________________________ Cinelerra mailing list [email protected] https://init.linpro.no/mailman/skolelinux.no/listinfo/cinelerra
