[Sam Bright]

Well I’m doing music videos so youtube is the main delivery. However I would also like a master HD version for filing.

[Sam Bright]

Thank you all so far. I guess the problem with ProRes is sometimes it can do gamma shift. Hence why I’m exploring the idea of a TIFF or image sequence at a higher bit depth – therefore can leave my down converting to the absolute last stage.

[Sam Bright]

Hey John,

I have completed a whole project in Premiere Pro CS6 with a number of push ins and I believe that the default to scale frame size has been ticked throughout the whole stage of the project for my clip imports RED FOOTAGE (4K). As a result when I’m now trying to give my XML for grading conform in davinci resolve, the grader cannot get the right push ins retained from my sequence. I think he was saying the clips are zoomed too far in.

Any ideas of a way to do rectify my project / XML for the colourist? Without re-sizing every clip, 1 at a time and re building the whole timeline.

Sam

[Sam Bright]

Ill try the noise thanks.

No other stuff really, just brightness / gamma changes etc.

I guess it just seems odd my file going into the grade is proreshq422 without banding, however it is in colour… then the one coming back to me after export is black and white with banding, suggesting its the extra step of compression or something in the grade itself by going down to black and white.

Sam

[Sam Bright]

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

[Sam Bright]

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

[Sam Bright]

This could be an alternative to it maybe???

https://nofilmschool.com/2010/08/how-to-remove-horizontal-banding-artifacts-from-dslr-footage/

[Sam Bright]

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% zoom

Banding 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 TBC

FILE2 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 TBC

FILE3
From grade, which used an export of mine in colour then he re-exported for me for my final…
LINK TBC

The 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

[Sam Bright]

Hey mate,

Are you an Aussie out of curiosity?

With regards to the zooming stuff… Problem a) This is solved and I appreciate your help. It was simply me accidentally exporting the ProResHQ using the Upper fields rather than progressive setting.

Now I’m just concerned about problem 2) the gradient banding…. Also the best way around it when my friend grades in Resolve Lite. Plus a way for future.

Thanks for your suggestions… While I try and work this out as some of it may be slightly over my head :
Would it be too much to ask if I email you a dropbox link to one of the shots with banding probz?

Also, when exporting using ProResHQ422, should I be enabling chroma filtering or setting gamma correction to none?

My email is info@bermudans.com

Cheers,

Sam

[Sam Bright]

Actually Its late but think you may have been right. I’ll check again in the morning but I believe I might have not been ticking the Progressive box below the proreshq codec in export…

Hypothetically would this create the type of ghosting shift lines shown in above photos?

If so, then its possibly just that gradient now to be tackled.

Will check again in morning with clear eyes.

Sam