I'm finishing a project in VP15 (Build 321) and for color correction (and rendering) I switched the project properties to 32 bit (video level). I noticed that the rendered file (Sony AVC) doesn't match the levels of the preview (less contrast, exactly as if I applied the levels filter "computer RGB to studio RGB"). That doesn't happen with 8 bits.
And no, it's not that kind of a thread of someone getting lost in studio vs. computer levels or 8 bit / vs. 32 bit. ;-) (I hope) I know the "levels pipeline" for my setup and projects. It happens only with the Sony AVC Plugin and 32 bit mode. DNxHD / Magix AVC, etc. work fine with 32 bit. Just an empty project with color bars and switching to 32 bit is enough for it to happen. When importing the rendered file back the waveform monitor shows clearly that the levels where changed like 0 --> 16 / 255 --> 235.
I don't know when I tried to render the last time with these preferences so I don't know when this really started. But it shouldn't be like that, should it? It doesn't happen in VP 14. How can I get back correct video levels when rendering 32 bit projects with Sony AVC?
I've got SEMW Extension installed so I usually have my preview set to "PC". And when rendering, levels (plugin activated by SEMW) switch back to "Original" like they should. I even uninstalled SEMW once (and Vegas too) but that didn't help. Also resetting Vegas by starting it with Control + Shift didn't help. Maybe I started that bug/behaviour by dividing the video preview (set to bypassed effects)? (I noticed that this funnction doesn't specially recognise the levels plugin used by SEMW and also bypasses it.)
First the reimported rendered files also showed a wrong lenght of the video event (too short). After deinstalling (and reinstalling) the SEMW Extensions that behaves normally.