Infoseite // AVID MetaFuze - coloring (colors reversed)



Frage von Alexius Marnion:


Hoi,

I have a problem with AVID MetaFuze.

I currently use the program to DPX files into AVID Xpress import: http://forum.slashcam.de/hier-klicken-vp333497.html#333497

The program gives me but a Riesenfarbfehler in my pictures.

it should be looking:
zum Bild

and so see the pictures in MetaFuze from:
zum Bild

The images look quite normal (with other programs considered), only this error comes MetaFuze.

This looks somehow as if the color reversed?

I've actually, as far as I know, the RGB color space ITU 709th
By editing the LUT I somehow do not come next, but have little experience synonymous with it.

In addition (if I'm in the process) I think the MetaFuze only works in 4:3 format? Blöd 16:9 because I really need.

Space


Antwort von Alexius Marnion:

Have now rausgefunden that coloring occurs only when I want to import DPX v2. In DPX v1 seems to work. But is rather ugly because we with the newer v2 would work.

I now know not only whether an error in the software of MetaFuze or in the Transfer Tool "mTransfer" by the Fraunhofer Institute, which the tool us nice white available.

To explain: we get for the Project Megacine (http://www.iis.fraunhofer.de/bf/bv/cinema/megacine.jsp) mTransfer borrowed and used for conversion to graphics files such as DPX, TIFF, BMP or RAW in 8bit or 16bit. And because of the later mastering only DPX or TIFF in question. Preferably, because of the DPX timecode.

Now I can date but not synonymous to see whether MetaFuze the color change, if we want to work with 16bit. (because 8bit would actually too small for the future Digital Cinema Mastering)

Space


Antwort von TheBubble:

It is only the color red and blue swapped. One is of a BGR and even of a RGB color is assumed.

Space


Antwort von Alexius Marnion:

ok, thank you, something I already suspected, I must just find out how I can replace the back.

Gibs as Tools for the Avid or may itself?

Space


Antwort von TheBubble:

If you even have no solution is found (I have your software, so I can only make assumptions): Maybe you can use it during the import or Clipeigenschaften set, or you have a video filter to apply the two colors reversed.

Space


Antwort von WoWu:

Alexius @ Marnion

Check it out if you do not accidentally Y'CbCr the signal from the MEGACINE used.
Experimental Stellaires but at times DPX Y'CbCr order.
If you use the RGBA signal like, you have to have synonymous 2xHDSDI wired?
Did the camera 10 or 12 bit 4:4:4 output? Dual-Link?
Can you use the resulting color bars post gives a bit more information.
And if you with the "newer" DPXv2 want to work, then look at v3, since it is the last NAB. To save you synonymous rendering in the timeline.

Space


Antwort von Alexius Marnion:

Hui, which are sometimes a lot of info, thanks for this:)

Do I have everything but the first search, have not yet worked with the Megacine. Have so far only with older probiert test sequences, the devices themselves, we get again until mid-February for the production.

Hab now as far NEN working with DPX workflow v1 but can still be improved.

Mainly I do now but with only worries that MetaFuze between the color depth to 8bit could reduce. Since I have to look at the files in hex editor anschaun Not if I can get there.

Space


Antwort von WoWu:

MetaFuze is only 8 bits, but is synonymous only to the Offlining thought. Then you need to return to the original material.
You can not MetaFuz for hoherwertiges material online use.
It can be synonymous, for example, no choice at 185 to DNxHD.

Space


Antwort von Alexius Marnion:

Verd ** habs but feared. so has the program for my purposes, unfortunately disqualified.
And off / online editing with me does not matter, only that it is technically zumindenst a digital movie and that should be at least 10bit. Or ham only option for offline.

Who now, after the isch dfragt reason, it's a university project with emphasis on technique and not the movie itself
Since I only amazing that Avid work with single frames makes it difficult.

Space



Space


Antwort von WoWu:

Well, this has little to do with AVID.
That is a question of synonymous A / D conversion, whether such depths synonymous video can be processed and of course, synonymous, quite incidentally, a matter of practical Filesize.
The principle of off-line editing is deliberately chosen to create from the original material synonymous and finalizing the grading can be done.
And, I must say in all honesty, my target your workflow from the brief description does not become entirely clear. Nor, from what your camera <welches> signal relates.
Perhaps we should times with the existing requirements (equipment) and a corresponding target (film?) Establish a workable workflow. That is no unusual thing, since your planning.

Space


Antwort von Alexius Marnion:

japp, a workflow s.genau so I sit straight.

Uh, yes. ma versuchs together.

We get two of the Fraunhofer Spezialcams borrowed on a side-by-side mounted rig. What exactly for the Cams are synonymous, I still have to ask if necessary. We thus wolen NEN stereoscopic digital cinema film making.

In any case, the material is first on the bottom called digital recorder Megacine saved.
With one of the Fraunhofer software itself can be written in DPX, TIFF, BMP or RAW 16bit convert, but actually only the first two in question.
And as we now know, suspect, this tool makes this mistake when DPX2 and apparently swapped the R and B channel. But that has become synonymous not the problem.

Filesize are negligible, is about 12MB per frame.
Only colors should halt at min. 10bit stay. And anyway the 16bit only to be refilled.
And Avid sizes as far as this seems already to be able to process, is just a little bit complicated to deal with it.

If I remember correctly, the two cams each with an SDI interface, if I do not confuse. And since I Kich grad ask themselves, because of SDI is actually SD but I think it can thus transmit HD material. Vielleciht I've just confused the terms.
Only explanation, but I think that's already escaped, I'm "only" with a student while now but I Basic shock as it slowly s.meine borders so please be patient ^ ^.

The files of the cameras are. FhgSP, if what you say.

Where was I? Oh, and this tool for the Megacine So I converted them. FhgSP files.
And now I have found in our offline NLE import. Either Xpress Pro HD and Media Composer if necessary.
But that is not at easy as I found out.
TIFF While I can easily import, but these are all 5sec long when I'm on the video track slide. Since I've just been back to a post set in the Avid forum where I hope a solution to get.

When I finished the movie would have been cut, I would sequential TIFF files and export them in a (here written on the university) invite mastering tool, which among other things. Gamma adjust and in the XYZ color space is converted. And what of me auspuckt should be our brand new HD cinema projector can spend. But so far I have not.

So, I hope so that the basic framework somewhat understandable to have performed.
And I know that it can not solve all Abreit vorkauen me to leave but when I come this problem is no longer synonymous next and the engineers are familiar with us because not enough.

Space



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