ID 159443 - DPX 'truncated at' image error on Read node through Viewer

Problem summary
DPX sequences exported from external encoding software may cause the following Truncated error message, 'Truncated at ******* bytes. (see below)

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Further investigation has discovered from a recent user case, that if a DPX was generated from Scanity Scanner when the Dirt Matte Format was set to Embedded 2. When set to Embedded 1 this exported the RGB correctly, but not the alpha.

The image will display in the Node Graph thumbnail, but not in the Viewer and can be imported into external programs correctly.

Customer reported version
nuke.n/a

Customer reported platform

n/a

Steps to reproduce

1) Open attached DPX file (or a Scanity Scanner DPX exported at Embedded 2)
Result: Truncated error message
 

Workaround

Currently, the best workaround is to re-render the source DPX frame within Nuke using a new Write node. This removes the issue.

Reproduced by support

This bug has been reproduced in:

Nuke 11.3v1 - Windows 7 - MacOS 10.13.6 - CentOS 7

Nuke 11.2v1 - Windows 7

Nuke 11.1v1 - Windows 7

Nuke 11.0v1 - Windows 7

Nuke 10.5v1 - Windows 7

Nuke 10.0v1 - Windows 7

Nuke 9.0v1 - Windows 7

Nuke 8.0v1 - Windows 7 - Mac)S 10.13.6 - CentOS 7

Earliest version tested
Nuke 8.0v1

- This issue appears to be in all versions of the product

Expected behaviour
There should not be a truncation error message and corrupt image, when viewing a DPX image from an external program

Actual behaviour
There is a truncation error message and corrupt image, when viewing un-specific DPX images from an external program.