12 bit & 16 bit DPX support about djv

[nawadoln]

Hi Darby,

I provided you 3 files 10bit, 12bit and 16bit. If you have Nuke or other image sequence player they can open it but DJV can't open the 12 bit file at the moment.

links: https://we.tl/t-uOJJQTYTq3

cheers

[darbyjohnston]

Great, thanks for the sample files, that's very helpful!

[darbyjohnston]

Hi, out of curiosity when you open the 12-bit files in the other applications, are you actually working with 12-bit data or does the application scale it up to 16-bits?

[nawadoln]

Well I'm not sure what the software does in the backend. But I guess No because when zoom in detail, grain still the same no change unless it has a way to convert data but not affect visually. Thanks

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On Tue, Sep 29, 2020, 6:22 AM Darby Johnston ***@***.***> wrote: Hi, out of curiosity when you open the 12-bit files in the other applications, are you actually working with 12-bit data or does the application scale it up to 16-bits? — You are receiving this because you commented. Reply to this email directly, view it on GitHub <#48 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/ARDDYB5R3K5P3HRIRNICHKDSIELEJANCNFSM4ITJQKRQ> .

[darbyjohnston]

I assume that internally it scales the data up to 16-bits which would take more memory but not affect the quality. Do the applications show the actual pixel values when picking colors (0-4095) or a floating-point number (0.0-1.0)?

I'm curious because converting to 16-bits would be the easiest way to support this, but as I mentioned it does take more memory and the DJV color picker would show the values as either 16-bit (0-65535) or floating-point which might be an issue.

[nawadoln]

Hi Darby, I think you're right, the sample pixel values shown as 0-1, maybe it is converting to either 10 or even 8 bit in the background. [image: image.png]

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On Wed, Sep 30, 2020 at 12:59 AM Darby Johnston ***@***.***> wrote: I assume that internally it scales the data up to 16-bits which would take more memory but not affect the quality. Do the applications show the actual pixel values when picking colors (0-4095) or a floating-point number (0.0-1.0)? I'm curious because converting to 16-bits would be the easiest way to support this, but as I mentioned it does take more memory and the DJV color picker would show the values as either 16-bit (0-65535) or floating-point which might be an issue. — You are receiving this because you commented. Reply to this email directly, view it on GitHub <#48 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/ARDDYB2TSSVHJZIB5D3PPT3SIIN6ZANCNFSM4ITJQKRQ> .

-- *Best Regards* Nawadoln Siributr