The LG V30 phone can record video in LG-Cine Log format. The colors are distorted/broken and must be fixed with their official LUTs (they support Premiere, Baselight and Resolve). The LUTs are not compatible with Shotcut, I don’t get original colors like in Davinci Resolve.
There is no other video editor on Linux that is compatible with LG LUTs (I get broken colors). So I was forced to install dual boot Windows just for Davinci Resolve.
You will need to wait for a new Shotcut release after the next FFmpeg release to get the support for the expanded matrix size in lut3d. I cannot tell you when that will be, but I suspect within a few months.
I will, of course, mention when FFmpeg is upgraded, but I will not remember this particular topic because an ffmpeg upgrade does not directly address it.
I do not get any error. But note that your cube files have extended output range which is not possible to be stored in fixed integer pixel formats, like rgb24. Instead you need float pixel format support in both shotcut and lut3d filter.
With my LUTs and Cine Log samples (uploaded above) ?
Can you share the command you used? (I have no idea about float pixel format and what parameters should I use in ffmpeg)
If you closely inspect .cube files, their domain min/max are not 0/1 thus this black output.
And they are really supposed to work with float pixel formats, and not integer ones.
Is it possible to successfully apply LUT on *LG Cine Log.mp4 with ffmpeg (so it will look almost identical to *Auto Mode.mp4) or it is much more complicated and needs careful debugging to check if LG-Cine Log videos and LUTs are compatible with ffmpeg?
At this point I understood that Shotcut will include in next update the latest ffmpeg. But if this will fix my LUT problem is still unknown (as I was unable to apply successfully the LUT yet).
Not possible, as shotcut does not really work with float pixel formats AFAIK.
Also lut3d filter would need to be updated to work with rgb float pixel formats.
After further inspection, we are saying these LUTs are currently incompatible. It is unlikely they will compatible anytime soon in Shotcut - possibly in FFmpeg, but I cannot speak for it. Maybe someone else has LUTs for integer image formats.