Problem summary When Merging OVER a Transformed, Mirrored input, onto a Reformatted input, Nuke11.2's Viewer window flickers when playing back the footage.
This issue is regressive, Nuke11.0 does not display the flicker problems.
Customer reported version nuke.11.2v3
Customer reported platform centos7
Steps to reproduce
1) Open the attached script ( open your script )
2) Set the Viewer to the Merge node connecting the inputs
3) Playback the footage
Result: The Viewer will flicker constantly.
When the Merge node inputs are flipped, you can see that the footage is constantly switching between mirrored and no mirror
Workaround
1. Modify the Merge operation to another merge type ( issue only occurs with Over )
2. Pre-composite the reformatted footage and remove the Reformat node.
3. Disable 'Black Outside' on the Transform node.
4. Add a very minor motion blur to the Transform node ( set the motionblur knob to "0.000001" )
Reproduced by support
This bug has been reproduced in: Nuke11.2v4 - Windows 7 - Mac10.13 - CentOS6.9 Nuke11.2v1 - Windows 7 - Mac10.13 - CentOS6.9 Nuke11.1v4 - Windows 7 - Mac10.13 - CentOS6.9 Nuke11.1v1 - Windows 7 - Mac10.13 - CentOS6.9 - regression
Unable to reproduce bug in: Nuke11.0v4 - Windows 7 - Mac10.13 - CentOS6.9 Nuke10.5v7 - Windows 7 - Mac10.13 - CentOS6.9
Earliest version tested - This issue no longer appears in this version and has regressed
Expected behaviour Viewer should display smooth animation of the footage
Actual behaviour Footage displayed constantly flickers between mirrored and non-mirrored