GP-Log arrived with the HERO12 and is GoPro’s first genuinely gradeable format. It is a big step up from flat colour profiles, and it looks alarming until it is decoded.
GoPro HERO12/13 10-bit Log
The conversion inverts the GP-Log curve and applies GoPro’s own colour matrix, the one in its Technical LUT. Action footage adds its own constraint: it is usually bright, high-contrast and full of sky, so highlight rolloff matters more than shadow detail on most clips.
Both halves live inside the .cube you download, so the conversion cannot be forgotten, applied twice, or stacked in the wrong order — the three ways log grades usually go wrong.
Grading GP-Log with contrast rather than a conversion. Contrast alone leaves the colour wrong; the gamut step is what makes water and sky read naturally instead of electric.
GP-Log is the first GoPro format worth grading, and out of the camera it looks like grey soup. These eight bake the full GP-Log conversion — curve and colour, not just the curve — into a single .cube, tuned for where a GoPro actually goes: sky, water, dirt and snow.
Because it has not been decoded yet. GP-Log stores far more dynamic range than a normal picture profile by recording a flat, low-contrast signal — that is the point of it. A conversion to Rec.709 maps it back to an image meant to be looked at.
Not here. Pick GP-Log as your footage type before you download and the GP-Log → Rec.709 conversion is baked into the same .cube as the look, so it is one node in Resolve or one adjustment layer in Premiere.
GoPro HERO12/13 10-bit Log. If your camera records GP-Log, these conversions apply to it.
All 175 grades in the library can bake a GP-Log conversion in — choose GP-Log as the footage type before downloading and it is written into the .cube. The free conversions at https://ireelz.com/luts/free are authored for specific cameras, so use those if you shoot one of them.
Graded footage still gets claimed for its soundtrack. Original music with a licence in your name — start with the free tracks.