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J
Jan_Berlin
Known Participant
December 12, 2017
Question

Critical Color Shift between ProRes4444 and ProRes422HQ

  • December 12, 2017
  • 2 replies
  • 1940 views

Hey Folks.

I have a very heavy Problem: we received a new Version of a VFX Shot from Color Correction Department. The first Version was ProRes422HQ, the second ProRes4444. Both came from the same Software (Assimilate Scratch) with the same Grading applied.

In this case, when I import them into Premiere (or After Effects) there is a significent "Shifting" on all three Color Channels. Every other Application (Final Cut, Scratch, Davinci) displays the Files correctly, without any difference.

Any Ideas on that? This is a really critical Error and you won't recognize it without a Side by Side Comparison.

This topic has been closed for replies.

2 replies

R Neil Haugen
R Neil Haugen
Legend
December 12, 2017

One thing you might check ... I know Resolve has a wide variety of options for color space of project and color space for media and color space of output ... I think Scratch does also. PrPro is stock Bt.(Rec) 709 sRGB.

So ... you might check to see what the operating specs were for those on the machines that did the work. Especially check what their color settings were on the exports.

Neil

Everyone's mileage always varies ...
J
Jan_BerlinAuthor
Known Participant
December 12, 2017

Metadata Informaion:

Video

ID                                       : 1

Format                                   : ProRes

Format version                           : Version 1

Format profile                           : 4444

Codec ID                                 : ap4h

Duration                                 : 4s 0ms

Bit rate mode                            : Constant

Bit rate                                 : 286 Mbps

Width                                    : 1 920 pixels

Height                                   : 1 080 pixels

Display aspect ratio                     : 16:9

Frame rate mode                          : Constant

Frame rate                               : 25.000 fps

Color space                              : YUV

Chroma subsampling                       : 4:4:4

Scan type                                : Progressive

Bits/(Pixel*Frame)                       : 5.522

Stream size                              : 136 MiB (100%)

Writing library                          : aas0

Language                                 : English

Encoded date                             : UTC 2017-12-12 16:07:04

Tagged date                              : UTC 2017-12-12 16:07:04

matrix_coefficients_Original             : BT.709

Video

ID                                       : 1

Format                                   : ProRes

Format version                           : Version 0

Format profile                           : 422 HQ

Codec ID                                 : apch

Duration                                 : 4s 0ms

Bit rate mode                            : Constant

Bit rate                                 : 186 Mbps

Width                                    : 1 920 pixels

Height                                   : 1 080 pixels

Display aspect ratio                     : 16:9

Frame rate mode                          : Constant

Frame rate                               : 25.000 fps

Color space                              : YUV

Chroma subsampling                       : 4:2:2

Scan type                                : Progressive

Bits/(Pixel*Frame)                       : 3.595

Stream size                              : 88.9 MiB (100%)

Writing library                          : aas0

Language                                 : English

Encoded date                             : UTC 2017-12-11 13:50:39

Tagged date                              : UTC 2017-12-11 13:50:39

matrix_coefficients_Original             : BT.709

R Neil Haugen
R Neil Haugen
Legend
December 12, 2017

Well, it was a wild guess try. That would seem to indicate they had accurate and similar settings on the 'outs'. I have seen this behavior with different 'out' settings before. With the same ... that's a bugger ...

Neil

Everyone's mileage always varies ...
E
excited_Genie16B8
Legend
December 12, 2017

I can't explain the error, other than what might be expected between 444 and 422 versions.  But to get things moving forward, maybe try DNx instead of ProRes?  (Use MXF files, not QuickTime.)

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