CR12 Bloom&Grace animation flashing

[mark_yang]

After updating the Corona12 version, there will be flickering in the rendering sequence of Bloom&Grace function. Please refer to the video for reference. The left side is a sample rendered by CR12, and the right side is rendered by CR11. This project is a modification of the previous project, and the current solution is to switch the rendering farm to CR11 rendering, which will work normally

[Aram Avetisyan]

Hi,

As I understand, in the attached video the footages have different resolution, right?
In such case it may be expected (the difference between the footages) to some degree, as the image filtering, antialiasing and possibley other settings can change how bloom and glare is seen. This does not mean that it is expected that bloom and glare flickers from frame to frame in a sequence, with any settings.

Can you please tell a bit more in detail - there are specific frames where Bloom and Glare is not applied? Or applied more faintly/strongly, resulting to a flickering?
And can you please render the same sequence in a higher resolution and see if bloom and glare is applied consistently throughout the whole footage?

P.S. we have a similar or related report in our system, related to Bloom and glare. If you need a quick "solution", try enabling "Use legacy (v5) effect" in Render Settings > Camera > Bloom and Glare. Note that this may change the bloom and glare, but it should be possible to get similar results as before by tweaking the settings slighly.

[mark_yang]

Hi,

As I understand, in the attached video the footages have different resolution, right?
In such case it may be expected (the difference between the footages) to some degree, as the image filtering, antialiasing and possibley other settings can change how bloom and glare is seen. This does not mean that it is expected that bloom and glare flickers from frame to frame in a sequence, with any settings.

Can you please tell a bit more in detail - there are specific frames where Bloom and Glare is not applied? Or applied more faintly/strongly, resulting to a flickering?
And can you please render the same sequence in a higher resolution and see if bloom and glare is applied consistently throughout the whole footage?

P.S. we have a similar or related report in our system, related to Bloom and glare. If you need a quick "solution", try enabling "Use legacy (v5) effect" in Render Settings > Camera > Bloom and Glare. Note that this may change the bloom and glare, but it should be possible to get similar results as before by tweaking the settings slighly.

Hello, the resolutions are different, CR11 is 1080P and CR12 is 576P. However, this flicker is not caused by the difference in resolution, as it did not occur in previous versions. This situation has been updated to CR12 and not only in this scene, but also in other scenes where the rendering sequence produces glare. Later, we switched the rendering farm to CR11 rendering for some shots, and this flicker did not occur

[Aram Avetisyan]

If there is a visual difference (worse) with a scene in Corona 12 vs Corona 11, it will be good to get the scene and do investigations.
A stripped down version of the scene (only the thing contributing to Bloom and Glare, i.e. lights, which are enough to reproduce the issue) shall also be fine.

You can do so by starting a ticket at:
https://support.chaos.com/hc/en-us/requests/new

[mark_yang]

Hello, I have applied for a ticket  Request #278539