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Premiere Pro CS6 – Zooms in Post giving me terrible looking – ghosting / interlacing like lines
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[Sam Bright] “Now I’m just concerned about problem 2) the gradient banding”
One way to solve banding is to add grain to the shot.
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OK –
Can send links to files mentioned at bottom…
– the edited sequence viewed in the Program Monitor at 100% zoom
No visible banding (with pixelly edges etc like in picture earlier) in the ungraded colour footage (to be turned black and white)– the exported ProRes intermediate file, imported back into Premiere Pro and viewed in the Source Monitor at 100% zoom
No visible banding (with pixelly edges etc like in picture earlier) in the ungraded colour footage when brought back into premier (to be turned black and white)
Another IDEA I HAD – Exported same as above but using the premiere pro black and white plugin with default settings….
Slightly Visible banding with pixelly edges….
– the color graded ProRes file, imported into Premiere Pro and viewed in the Source Monitor at 100% zoomBanding more visibile… But then again there has been 2 x exports… 1 from me to him in the potentially upper field premier setting, with chroma not selected……
– – – – – – – – –
So it looks like black and white seems to elevate the problem with banding prone shots….
I have a dropbox link to each version of these…
FILE1 ORIGINAL COLOUR NO TWEAKS IN TIMELINE
ProResHQ422
Progressive, Maximum bit depth, 48 BIT export
no gamme correction in settings (proresHQ)
Chroma filtering ticked!
Max render quality etc… All maxed….
LINK TBCFILE2 BLACK AND WHITE
Progressive, Maximum bit depth, 48 BIT export
no gamme correction in settings (proresHQ)
Chroma filtering ticked!
Max render quality etc… All maxed….
LINK TBCFILE3
From grade, which used an export of mine in colour then he re-exported for me for my final…
LINK TBCThe reason I’d like to minimise this is by the time we get into h264 for web its pretty distracting + on one of my money shots…
Sam
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This could be an alternative to it maybe???
https://nofilmschool.com/2010/08/how-to-remove-horizontal-banding-artifacts-from-dslr-footage/
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You’re putting an effect in the clip that forces the footage to 8-bit. Is there some special artistic reason the B&W look should be baked baked in before grading?
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Interesting so the black and white plugin in Premiere forces into 8BIT?
The reason I did it was to emulate a similar version of what is happening in Grade to see if it was the mere fact that the footage was going to black and white which was causing the bad banding.
However… exporting in ProResHQ 422 same way in colour , would still be 8BIT and is getting next to no visible banding on this export….
Thoughts?
Cheers,
Sam
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Prores 422 HQ is a 10-bit codec.
About effects:
https://help.adobe.com/en_US/premierepro/cs/using/WSE04091E3-79C1-4014-B4F5-681A65A9AC80.html
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Are you seeing the gradient on your computer monitor or broadcast monitor and are you sure either has a 10 bit panel. Are you delivering for film of broadcast or web? because most folks if not viewing in a theater but rather their home set or computer monitor will actually be viewing an 8bit signal. If you want to see the gradient with as little banding as possible you will need to use an i/o card with 10 bit processing to a 10 bit panel.
“Think of everything in terms of building capacity.”
Kris Merkel
twitter: @kris_merkel
Product Manager, Flanders Scientific Inc.
http://www.shopfsi.com
Co-Founder, Atlanta Cutters Post Production User Group
http://www.atlantacutters.com2.2Ghz MBP core i7
16Gb RAM
CS6/FCP7
AJA T-Tap
AJA IO XT
FSI LM-2461W/CM-170W
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Hey,
Seeing it on the computer monitor. My macbook pro 2.5 GHZ i7 , 8GB 1333 MHz DDR3 Ram. 15 Inch Screen.
Not sure RE : 10BIT Panel
Delivering for web, so will eventually need to go down to h264, which is why I’m concerned.
Could I simply re-conform the RED footage in Davinci Resolve, then export Uncompressed Clips or Image sequences, then re-build my timeline in Premiere, then re-export that way to h264?
Sam
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Tero makes a great suggestion with respect to applying some grain. The Noise effect in Premiere at 1-2% should work.
Other than converting to black and white, what type of color correction effects are being applied in Resolve? The same results can probably be achieved in Premiere or After Effects without intermediate files.
Try different options to determine the best workflow. There will be additional challenges dealing with chroma sub-sampling and DCT compression in the final delivered file.
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Then the banding that you are seeing will be apparent in the final encode. 8bit is 8bit some of the filters that others have mentioned will help a little. I would also play with your encoding settings to achieve balanced results.
“Think of everything in terms of building capacity.”
Kris Merkel
twitter: @kris_merkel
Product Manager, Flanders Scientific Inc.
http://www.shopfsi.com
Co-Founder, Atlanta Cutters Post Production User Group
http://www.atlantacutters.com2.2Ghz MBP core i7
16Gb RAM
CS6/FCP7
AJA T-Tap
AJA IO XT
FSI LM-2461W/CM-170W
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