Alley - DXV to Prores = Hue shift

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francoe
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Alley - DXV to Prores = Hue shift

Post by francoe »

I've noticed a shift to green when converted a dxv clip to prores using Alley, and then previewing with it.

DXV source
Screenshot 2021-01-25 at 05.01.04.png
ProRes 422 converted
Screenshot 2021-01-25 at 05.01.08.png
Mjpeg converted
Screenshot 2021-01-25 at 05.01.12.png
Not happening when clip is converted to Mjpeg.
Same shift with DXV clip imported to AE and rendered to ProRes.

Thoughts¿?

Zoltán
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Re: Alley - DXV to Prores = Hue shift

Post by Zoltán »

Can you share the original file, so we can check it out?
Thanks!
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francoe
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Re: Alley - DXV to Prores = Hue shift

Post by francoe »

Sure, I will make some samples.
But I aware you that happens with any source. If you take any file, convert it to dxv and from that dxv to prores, a green cast or hue shift happens. It's noticeable comparing booth files on alley or arena.

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francoe
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Re: Alley - DXV to Prores = Hue shift

Post by francoe »

jpg original file
https://drive.google.com/file/d/1IzK6rW ... 4nQjYgB-Mh
color_chart.jpg
jpg to dxv (colors ok)
https://drive.google.com/file/d/160QwVD ... dgzvf-KmRB

dxv to prores (hue shift)
https://drive.google.com/file/d/1AVjPMQ ... ktxOoPPmuN


I noticed converting from dxv to prores, buy maybe is a general thing about prores import.

Zoltán
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Re: Alley - DXV to Prores = Hue shift

Post by Zoltán »

Try prores 4444, that's the closest I get in colors.
Also it's best to convert from the original file. Compressing a compressed file will always result in additional data loss.

Tried Apple Compressor too, the color shift converting the Jpeg file to prores is about the same as in Alley

With 422 I think the playback in Alley is shifting the colors a bit, we'll take a look why that happens.
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francoe
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Re: Alley - DXV to Prores = Hue shift

Post by francoe »

Thanks Zoltan. :D
Oh, forget about quality, was just a 3click way to show it.
I have some original clips on dxv, that day I wanted to store a prores422 copy for archival consistency. Then noticed the shift. But was a particular case, I render my clips on both and store it separately.
I didn't make any further test, but can infer from your words Arena will shift hue on any prores file. Is that right?

Zoltán
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Re: Alley - DXV to Prores = Hue shift

Post by Zoltán »

With 422 prores files, indeed there seems to be a color shift for some reason.
4444 should play fine.
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