pub const JXL_ENC_FRAME_SETTING_EXTRA_CHANNEL_RESAMPLING: JxlEncoderFrameSettingId = 3;
Expand description

Similar to JXL_ENC_FRAME_SETTING_RESAMPLING, but for extra channels. Integer option, use -1 for the default behavior (depends on encoder implementation), 1 for no downsampling (1x1), 2 for 2x2 downsampling, 4 for 4x4 downsampling, 8 for 8x8 downsampling.