What is your operating system? Windows 10 Home What is your Shotcut version? 26.8.1 Track V1: Any clip. Track V2: A clip with transparency. I the case below, just a Text clip with a transparent background. But a .mov clip with transparencies will have the same effect. Exported project when Proce…

This is fixed for the next version 26.9 (it does not force mlt_image_format=rgba)

It took me a while to reproduce it clearly. Seems it needs something very saturated on V1, but the color bar generator did not for me. The problem first appeared in release version 25.12.31, which is when the Processing Modes and 10-bit CPU where introduced. Update: it seems to require an IMAGE on …

Please test this workaround: in Export > Other add the line: mlt_image_format=rgba

You’re right. No issue with a video instead of an image on V1 [image] shotcut: Please test this workaround: in Export > Other add the line: mlt_image_format=rgba [QbvGJ7iOGA] Yes. With that line added, no more color shift on the V1 image after export.

@brian There was no meaningful change to the qimage producer between October 2025 and end of 2025 to explain this. Changing the project to use frei0r.cairoblend, I get the same result! I do not see it in the preview, which uses mlt_image_format=yuv420p. But an export with mlt_image_format=yuv420p st…

I wonder if this could be related to either of these issues which are similar in that they have a color shift, but simpler in the steps to reproduce: [image] Size, Position and Rotation Filter changes color of videos Bug What is your operating system? Window…

Processing Mode Native 8-bit CPU - Color shift below transparent clip

Bug

brian August 13, 2026, 10:50pm 6

I wonder if this could be related to either of these issues which are similar in that they have a color shift, but simpler in the steps to reproduce: