Film was shooted in sony a7III by custom settings (4K slog3 and HD 100 p). When I look at source it's ok, in program monitor and after rendering it's bad... When I choose properties of clip in sequence it shows: Type: MPEG Movie File Size: 52,00 MB Image Size: 3840 x 2160 Frame Rate: 25,00 Source Audio Format: 48000 Hz - 16-bit - Stereo Project Audio Format: 48000 Hz - 32 bit floating point - Stereo Total Duration: 00:00:04:08 Pixel Aspect Ratio: 1,0 Alpha: None Color Space: Rec. 2100 HLG Color Space Override: Off Input LUT: None Video Codec Type: MP4/MOV H.264 4:2:0
So it sounds like the clip was shot in HLG on the camera? That is an HDR form of media. As that is what Pr is 'seeing' from the clip data you provided.
There are new color management options and defaults in Pr2022, and that is what's hanging you up here. Prior to this release, Pr defaulted to showing HLG HDR clips transformed into SDR in Rec.709. They don't now. So that clip is being displayed as HLG HDR on the timeline.
You can set the override in the clip properties (from a bin: Modify/Interpret footage) to a specified color space. You can set an override of a specific LUT you choose for the normalization/transform.
As it's on the timeline in HLG, you would need to 1) have the timeline Sequence Settings to HLG and 2) have a monitor capable of showing the greated dynamic range with HDR turned on and 3) have your OS set to recognize an HDR monitor and use it appropriately.
Working with HDR media is a ton more complex than the old Rec.709 media.