På Tue, 17 Jan 2012 22:42:01 +0100, skrev Michal Fapso <[email protected]>:
Thanks for your hints, Herman! I use that down-scaled video only as a proxy. When I set up the project, I render the final video from 1920x1080p videos. The original 1080p clips were recorded on Canon 600D with Magic Lantern, bitrate was set to 0.7x to save some disk space: Stream #0:0(eng): Video: h264 (Constrained Baseline) (avc1 / 0x31637661), yuvj420p, 1920x1088, 30516 kb/s, 23.98 fps, 23.98 tbr, 24k tbn, 48k tbc When I tried your trick with blurring the U and V channels, it helps with the block artifacts a bit, but it is still not as good as avidemux and when I set the blur radius too high, color from small spots like the yellow from sea-marks vanishes :o(
If you use the YUV effect instead of Hue/Sat, then a blur of 3 px will do just fine. In fact, it looks passable without chroma blur.
I really like the output of avidemux for both 640x360 and 1920x1080 videos. Is anybody able to improve the code for 4:2:0 -> 4:4:4 conversion in Cinelerra?
Never mind that. The Hue/Saturation effect must have some severe rounding errors. Just try using the YUV effect instead, and see for yourself: Keep Y at 1.0 (unity) and raise U and V by the same amount. I get a much cleaner result here, on par with Avidemux. I think it looks good with Y+10 and U,V + 40. .oO(Those colour adjustment effects really do need some scrutiny ...) -- Herman Robak _______________________________________________ Cinelerra mailing list [email protected] https://init.linpro.no/mailman/skolelinux.no/listinfo/cinelerra
