avstream_video->codec->color_primaries = AVCOL_PRI_BT709; // RGB colorspace (inout_format.color_space).
avstream_video->codec->color_trc = AVCOL_TRC_BT709; // Gamma curve (inout_format.gamma_curve).
avstream_video->codec->colorspace = AVCOL_SPC_BT709; // YUV colorspace (output_ycbcr_format.luma_coefficients).
avstream_video->codec->color_primaries = AVCOL_PRI_BT709; // RGB colorspace (inout_format.color_space).
avstream_video->codec->color_trc = AVCOL_TRC_BT709; // Gamma curve (inout_format.gamma_curve).
avstream_video->codec->colorspace = AVCOL_SPC_BT709; // YUV colorspace (output_ycbcr_format.luma_coefficients).