Remove Banding in sky
i need a bit of help removing some banding in a bright blue sky
I shot some fighter jets on RED, and converted to Cineform and my final output is PhotoJpeg Quicktime (not my choice) I am thinking the 12 bit to 8 bit drop is leading to the banding... any clues as to get rid of this crap I know one way is to implement some type of dithering(not sure how) Ideally there would be a better way to compress the data to 8 bit....perhaps thanks |
Re: Remove Banding in sky
Yes, PhotoJPEG not the best choice, but it will do if you let the bit-rate climb. Place the CineForm master into an AE composite, set the comp to 16-bit mode. Add a 16-bit noise filter with 0.4% noise (1-LSB of 8-bit worth of noise) then encode to PhotoJPEG at a high quality setting. If you still see banding, bump the noise. This is the dithering you need.
|
Re: Remove Banding in sky
thank you David....
can you explain the logic behind the .4% specifically decoding what you mean by 1-LSB Thanks again |
Re: Remove Banding in sky
8-bit is 256 levels. 1-bit or the LSB (Less Significant Bit) 1/256th of the full range. 1/256 = 0.0039 or approximately 0.4% of full range.
|
Re: Remove Banding in sky
thanks...appreciated as always..
might delve more into this using google later.. |
All times are GMT -6. The time now is 04:17 AM. |
DV Info Net -- Real Names, Real People, Real Info!
1998-2024 The Digital Video Information Network