| Value | Meaning |
|---|---|
| Unknown0 | unknown transfer function |
| Gamma101 | linear RGB, gamma 1.0 curve |
| Gamma182 | Gamma 1.8 curve |
| Gamma203 | Gamma 2.0 curve |
| Gamma224 | Gamma 2.2 curve |
| Bt7095 | Gamma 2.2 curve with a linear segment in the lower range, also ITU-R BT470M / ITU-R BT1700 625 PAL & SECAM / ITU-R BT1361 |
| Smpte240m6 | Gamma 2.2 curve with a linear segment in the lower range |
| Srgb7 | Gamma 2.4 curve with a linear segment in the lower range. IEC 61966-2-1 (sRGB or sYCC) |
| Gamma288 | Gamma 2.8 curve, also ITU-R BT470BG |
| Log1009 | Logarithmic transfer characteristic 100:1 range |
| Log31610 | Logarithmic transfer characteristic 316.22777:1 range (100 * sqrt(10) : 1) |
| Bt20201211 | Gamma 2.2 curve with a linear segment in the lower range. Used for BT.2020 with 12 bits per component. Since: 1.6 |
| Adobergb12 | Gamma 2.19921875. Since: 1.8 |
| Bt20201013 | Rec. ITU-R BT.2020-2 with 10 bits per component. (functionally the same as the values GST_VIDEO_TRANSFER_BT709 and GST_VIDEO_TRANSFER_BT601). Since: 1.18 |
| Smpte208414 | SMPTE ST 2084 for 10, 12, 14, and 16-bit systems. Known as perceptual quantization (PQ) Since: 1.18 |
| AribStdB6715 | Association of Radio Industries and Businesses (ARIB) STD-B67 and Rec. ITU-R BT.2100-1 hybrid loggamma (HLG) system Since: 1.18 |
| Bt60116 | also known as SMPTE170M / ITU-R BT1358 525 or 625 / ITU-R BT1700 NTSC |
The video transfer function defines the formula for converting between non-linear RGB (R'G'B') and linear RGB