obs-StreamFX/source/encoders/handlers/nvenc_shared.cpp

// AUTOGENERATED COPYRIGHT HEADER START
// Copyright (C) 2020-2023 Michael Fabian 'Xaymar' Dirks <info@xaymar.com>
// Copyright (C) 2022 lainon <GermanAizek@yandex.ru>
// AUTOGENERATED COPYRIGHT HEADER END

#include "nvenc_shared.hpp"
#include "encoders/encoder-ffmpeg.hpp"
#include "ffmpeg/tools.hpp"

extern "C" {
#include "warning-disable.hpp"
#include <libavutil/opt.h>
#include "warning-enable.hpp"
}

#define ST_I18N_PRESET "Encoder.FFmpeg.NVENC.Preset"
#define ST_I18N_PRESET_(x) ST_I18N_PRESET "." D_VSTR(x)
#define ST_KEY_PRESET "Preset"
#define ST_I18N_TUNE "Encoder.FFmpeg.NVENC.Tune"
#define ST_I18N_TUNE_(x) ST_I18N_TUNE "." D_VSTR(x)
#define ST_KEY_TUNE "Tune"
#define ST_I18N_RATECONTROL "Encoder.FFmpeg.NVENC.RateControl"
#define ST_I18N_RATECONTROL_MODE ST_I18N_RATECONTROL ".Mode"
#define ST_I18N_RATECONTROL_MODE_(x) ST_I18N_RATECONTROL_MODE "." D_VSTR(x)
#define ST_KEY_RATECONTROL_MODE "RateControl.Mode"
#define ST_I18N_RATECONTROL_TWOPASS ST_I18N_RATECONTROL ".TwoPass"
#define ST_KEY_RATECONTROL_TWOPASS "RateControl.TwoPass"
#define ST_I18N_RATECONTROL_MULTIPASS ST_I18N_RATECONTROL ".MultiPass"
#define ST_KEY_RATECONTROL_MULTIPASS "RateControl.MultiPass"
#define ST_I18N_RATECONTROL_LOOKAHEAD ST_I18N_RATECONTROL ".LookAhead"
#define ST_KEY_RATECONTROL_LOOKAHEAD "RateControl.LookAhead"
#define ST_I18N_RATECONTROL_ADAPTIVEI ST_I18N_RATECONTROL ".AdaptiveI"
#define ST_KEY_RATECONTROL_ADAPTIVEI "RateControl.AdaptiveI"
#define ST_I18N_RATECONTROL_ADAPTIVEB ST_I18N_RATECONTROL ".AdaptiveB"
#define ST_KEY_RATECONTROL_ADAPTIVEB "RateControl.AdaptiveB"
#define ST_I18N_RATECONTROL_LIMITS ST_I18N_RATECONTROL ".Limits"
#define ST_I18N_RATECONTROL_LIMITS_BUFFERSIZE ST_I18N_RATECONTROL_LIMITS ".BufferSize"
#define ST_KEY_RATECONTROL_LIMITS_BUFFERSIZE "RateControl.Limits.BufferSize"
#define ST_I18N_RATECONTROL_LIMITS_QUALITY ST_I18N_RATECONTROL_LIMITS ".Quality"
#define ST_KEY_RATECONTROL_LIMITS_QUALITY "RateControl.Limits.Quality"
#define ST_I18N_RATECONTROL_LIMITS_BITRATE ST_I18N_RATECONTROL_LIMITS ".Bitrate"
#define ST_I18N_RATECONTROL_LIMITS_BITRATE_TARGET ST_I18N_RATECONTROL_LIMITS_BITRATE ".Target"
#define ST_KEY_RATECONTROL_LIMITS_BITRATE_TARGET "RateControl.Limits.Bitrate.Target"
#define ST_I18N_RATECONTROL_LIMITS_BITRATE_MAXIMUM ST_I18N_RATECONTROL_LIMITS_BITRATE ".Maximum"
#define ST_KEY_RATECONTROL_LIMITS_BITRATE_MAXIMUM "RateControl.Limits.Bitrate.Maximum"
#define ST_I18N_RATECONTROL_QP ST_I18N_RATECONTROL ".QP"
#define ST_I18N_RATECONTROL_QP_MINIMUM ST_I18N_RATECONTROL_QP ".Minimum"
#define ST_KEY_RATECONTROL_QP_MINIMUM "RateControl.Quality.Minimum"
#define ST_I18N_RATECONTROL_QP_MAXIMUM ST_I18N_RATECONTROL_QP ".Maximum"
#define ST_KEY_RATECONTROL_QP_MAXIMUM "RateControl.Quality.Maximum"
#define ST_I18N_RATECONTROL_QP_I ST_I18N_RATECONTROL_QP ".I"
#define ST_KEY_RATECONTROL_QP_I "RateControl.QP.I"
#define ST_I18N_RATECONTROL_QP_P ST_I18N_RATECONTROL_QP ".P"
#define ST_KEY_RATECONTROL_QP_P "RateControl.QP.P"
#define ST_I18N_RATECONTROL_QP_B ST_I18N_RATECONTROL_QP ".B"
#define ST_KEY_RATECONTROL_QP_B "RateControl.QP.B"
#define ST_I18N_AQ "Encoder.FFmpeg.NVENC.AQ"
#define ST_I18N_AQ_SPATIAL ST_I18N_AQ ".Spatial"
#define ST_KEY_AQ_SPATIAL "AQ.Spatial"
#define ST_I18N_AQ_TEMPORAL ST_I18N_AQ ".Temporal"
#define ST_KEY_AQ_TEMPORAL "AQ.Temporal"
#define ST_I18N_AQ_STRENGTH ST_I18N_AQ ".Strength"
#define ST_KEY_AQ_STRENGTH "AQ.Strength"
#define ST_I18N_OTHER "Encoder.FFmpeg.NVENC.Other"
#define ST_I18N_OTHER_BFRAMES ST_I18N_OTHER ".BFrames"
#define ST_KEY_OTHER_BFRAMES "Other.BFrames"
#define ST_I18N_OTHER_BFRAMEREFERENCEMODE ST_I18N_OTHER ".BFrameReferenceMode"
#define ST_KEY_OTHER_BFRAMEREFERENCEMODE "Other.BFrameReferenceMode"
#define ST_I18N_OTHER_ZEROLATENCY ST_I18N_OTHER ".ZeroLatency"
#define ST_KEY_OTHER_ZEROLATENCY "Other.ZeroLatency"
#define ST_I18N_OTHER_WEIGHTEDPREDICTION ST_I18N_OTHER ".WeightedPrediction"
#define ST_KEY_OTHER_WEIGHTEDPREDICTION "Other.WeightedPrediction"
#define ST_I18N_OTHER_NONREFERENCEPFRAMES ST_I18N_OTHER ".NonReferencePFrames"
#define ST_KEY_OTHER_NONREFERENCEPFRAMES "Other.NonReferencePFrames"
#define ST_I18N_OTHER_REFERENCEFRAMES ST_I18N_OTHER ".ReferenceFrames"
#define ST_KEY_OTHER_REFERENCEFRAMES "Other.ReferenceFrames"
#define ST_I18N_OTHER_LOWDELAYKEYFRAMESCALE ST_I18N_OTHER ".LowDelayKeyFrameScale"
#define ST_KEY_OTHER_LOWDELAYKEYFRAMESCALE "Other.LowDelayKeyFrameScale"

using namespace streamfx::encoder::ffmpeg::handler;

inline bool is_cqp(std::string_view rc)
{
	return std::string_view("constqp") == rc;
}

inline bool is_cbr(std::string_view rc)
{
	return std::string_view("cbr") == rc;
}

inline bool is_vbr(std::string_view rc)
{
	return std::string_view("vbr") == rc;
}

bool streamfx::encoder::ffmpeg::handler::nvenc::is_available()
{
#if defined(D_PLATFORM_WINDOWS)
#if defined(D_PLATFORM_64BIT)
	std::filesystem::path lib_name = "nvEncodeAPI64.dll";
#else
	std::filesystem::path lib_name = "nvEncodeAPI.dll";
#endif
#else
	std::filesystem::path lib_name = "libnvidia-encode.so.1";
#endif
	try {
		streamfx::util::library::load(lib_name);
		return true;
	} catch (...) {
		return false;
	}
}

void nvenc::override_update(ffmpeg_instance* instance, obs_data_t*)
{
	AVCodecContext* context = const_cast<AVCodecContext*>(instance->get_avcodeccontext());

	int64_t rclookahead = 0;
	int64_t surfaces    = 0;
	int64_t async_depth = 0;

	av_opt_get_int(context, "rc-lookahead", AV_OPT_SEARCH_CHILDREN, &rclookahead);
	av_opt_get_int(context, "surfaces", AV_OPT_SEARCH_CHILDREN, &surfaces);
	av_opt_get_int(context, "async_depth", AV_OPT_SEARCH_CHILDREN, &async_depth);

	// Calculate and set the number of surfaces to allocate (if not user overridden).
	if (surfaces == 0) {
		surfaces = std::max<int64_t>(4ll, (context->max_b_frames + 1ll) * 4ll);
		if (rclookahead > 0) {
			surfaces = std::max<int64_t>(1ll, std::max<int64_t>(surfaces, rclookahead + (context->max_b_frames + 5ll)));
		} else if (context->max_b_frames > 0) {
			surfaces = std::max<int64_t>(4ll, (context->max_b_frames + 1ll) * 4ll);
		} else {
			surfaces = 4;
		}

		av_opt_set_int(context, "surfaces", surfaces, AV_OPT_SEARCH_CHILDREN);
	}

	// Set delay
	context->delay = std::min<int>(std::max<int>(static_cast<int>(async_depth), 3), static_cast<int>(surfaces - 1));
}

void nvenc::get_defaults(obs_data_t* settings, const AVCodec*, AVCodecContext*)
{
	obs_data_set_default_string(settings, ST_KEY_PRESET, "default");
	obs_data_set_default_string(settings, ST_I18N_TUNE, "hq");

	obs_data_set_default_string(settings, ST_KEY_RATECONTROL_MODE, "cbr");
	obs_data_set_default_int(settings, ST_KEY_RATECONTROL_TWOPASS, -1);
	obs_data_set_default_int(settings, ST_KEY_RATECONTROL_MULTIPASS, -1);
	obs_data_set_default_int(settings, ST_KEY_RATECONTROL_LOOKAHEAD, -1);
	obs_data_set_default_int(settings, ST_KEY_RATECONTROL_ADAPTIVEI, -1);
	obs_data_set_default_int(settings, ST_KEY_RATECONTROL_ADAPTIVEB, -1);

	obs_data_set_default_int(settings, ST_KEY_RATECONTROL_LIMITS_BITRATE_TARGET, 6000);
	obs_data_set_default_int(settings, ST_KEY_RATECONTROL_LIMITS_BITRATE_MAXIMUM, 0);
	obs_data_set_default_int(settings, ST_KEY_RATECONTROL_LIMITS_BUFFERSIZE, 0);
	obs_data_set_default_double(settings, ST_KEY_RATECONTROL_LIMITS_QUALITY, 0);

	obs_data_set_default_int(settings, ST_KEY_RATECONTROL_QP_MINIMUM, -1);
	obs_data_set_default_int(settings, ST_KEY_RATECONTROL_QP_MAXIMUM, -1);
	obs_data_set_default_int(settings, ST_KEY_RATECONTROL_QP_I, -1);
	obs_data_set_default_int(settings, ST_KEY_RATECONTROL_QP_P, -1);
	obs_data_set_default_int(settings, ST_KEY_RATECONTROL_QP_B, -1);

	obs_data_set_default_int(settings, ST_KEY_AQ_SPATIAL, -1);
	obs_data_set_default_int(settings, ST_KEY_AQ_STRENGTH, -1);
	obs_data_set_default_int(settings, ST_KEY_AQ_TEMPORAL, -1);

	obs_data_set_default_int(settings, ST_KEY_OTHER_BFRAMES, -1);
	obs_data_set_default_int(settings, ST_KEY_OTHER_BFRAMEREFERENCEMODE, -1);
	obs_data_set_default_int(settings, ST_KEY_OTHER_ZEROLATENCY, -1);
	obs_data_set_default_int(settings, ST_KEY_OTHER_WEIGHTEDPREDICTION, -1);
	obs_data_set_default_int(settings, ST_KEY_OTHER_NONREFERENCEPFRAMES, -1);
	obs_data_set_default_int(settings, ST_KEY_OTHER_REFERENCEFRAMES, -1);
	obs_data_set_default_int(settings, ST_KEY_OTHER_LOWDELAYKEYFRAMESCALE, -1);

	// Replay Buffer
	obs_data_set_default_int(settings, "bitrate", 0);
}

static bool modified_ratecontrol(obs_properties_t* props, obs_property_t*, obs_data_t* settings) noexcept
{
	// Decode the name into useful flags.
	const char* value              = obs_data_get_string(settings, ST_KEY_RATECONTROL_MODE);
	bool        have_bitrate       = false;
	bool        have_bitrate_range = false;
	bool        have_quality       = false;
	bool        have_qp_limits     = false;
	bool        have_qp            = false;
	if (value == std::string_view("cbr")) {
		have_bitrate = true;
	} else if (value == std::string_view("vbr")) {
		have_bitrate       = true;
		have_bitrate_range = true;
		have_quality       = true;
		have_qp_limits     = true;
		have_qp            = true;
	} else if (value == std::string_view("constqp")) {
		have_qp = true;
	} else {
		have_bitrate       = true;
		have_bitrate_range = true;
		have_quality       = true;
		have_qp_limits     = true;
		have_qp            = true;
	}

	obs_property_set_visible(obs_properties_get(props, ST_I18N_RATECONTROL_LIMITS), have_bitrate || have_quality);
	obs_property_set_visible(obs_properties_get(props, ST_KEY_RATECONTROL_LIMITS_BUFFERSIZE), have_bitrate);
	obs_property_set_visible(obs_properties_get(props, ST_KEY_RATECONTROL_LIMITS_QUALITY), have_quality);
	obs_property_set_visible(obs_properties_get(props, ST_KEY_RATECONTROL_LIMITS_BITRATE_TARGET), have_bitrate);
	obs_property_set_visible(obs_properties_get(props, ST_KEY_RATECONTROL_LIMITS_BITRATE_MAXIMUM), have_bitrate_range);

	obs_property_set_visible(obs_properties_get(props, ST_I18N_RATECONTROL_QP), have_qp || have_qp_limits);
	obs_property_set_visible(obs_properties_get(props, ST_KEY_RATECONTROL_QP_MINIMUM), have_qp_limits);
	obs_property_set_visible(obs_properties_get(props, ST_KEY_RATECONTROL_QP_MAXIMUM), have_qp_limits);
	obs_property_set_visible(obs_properties_get(props, ST_KEY_RATECONTROL_QP_I), have_qp);
	obs_property_set_visible(obs_properties_get(props, ST_KEY_RATECONTROL_QP_P), have_qp);
	obs_property_set_visible(obs_properties_get(props, ST_KEY_RATECONTROL_QP_B), have_qp);

	return true;
}

static bool modified_aq(obs_properties_t* props, obs_property_t*, obs_data_t* settings) noexcept
{
	bool spatial_aq = streamfx::util::is_tristate_enabled(obs_data_get_int(settings, ST_KEY_AQ_SPATIAL));
	obs_property_set_visible(obs_properties_get(props, ST_KEY_AQ_STRENGTH), spatial_aq);
	return true;
}

void nvenc::get_properties_pre(obs_properties_t* props, const AVCodec*, const AVCodecContext* context)
{
	{
		auto p = obs_properties_add_list(props, ST_KEY_PRESET, D_TRANSLATE(ST_I18N_PRESET), OBS_COMBO_TYPE_LIST,
										 OBS_COMBO_FORMAT_STRING);
		streamfx::ffmpeg::tools::avoption_list_add_entries(context->priv_data, "preset", [&p](const AVOption* opt) {
			char buffer[1024];
			snprintf(buffer, sizeof(buffer), "%s.%s", ST_I18N_PRESET, opt->name);
			obs_property_list_add_string(p, D_TRANSLATE(buffer), opt->name);
		});
	}

	if (streamfx::ffmpeg::tools::avoption_exists(context->priv_data, "tune")) {
		auto p = obs_properties_add_list(props, ST_KEY_TUNE, D_TRANSLATE(ST_I18N_TUNE), OBS_COMBO_TYPE_LIST,
										 OBS_COMBO_FORMAT_STRING);
		streamfx::ffmpeg::tools::avoption_list_add_entries(context->priv_data, "tune", [&p](const AVOption* opt) {
			char buffer[1024];
			snprintf(buffer, sizeof(buffer), "%s.%s", ST_I18N_TUNE, opt->name);
			obs_property_list_add_string(p, D_TRANSLATE(buffer), opt->name);
		});
	}
}

void nvenc::get_properties_post(obs_properties_t* props, const AVCodec* codec, const AVCodecContext* context)
{
	{ // Rate Control
		obs_properties_t* grp = props;
		if (!streamfx::util::are_property_groups_broken()) {
			grp = obs_properties_create();
			obs_properties_add_group(props, ST_I18N_RATECONTROL, D_TRANSLATE(ST_I18N_RATECONTROL), OBS_GROUP_NORMAL,
									 grp);
		}

		{
			auto p = obs_properties_add_list(grp, ST_KEY_RATECONTROL_MODE, D_TRANSLATE(ST_I18N_RATECONTROL_MODE),
											 OBS_COMBO_TYPE_LIST, OBS_COMBO_FORMAT_STRING);
			obs_property_set_modified_callback(p, modified_ratecontrol);
			obs_property_list_add_string(p, D_TRANSLATE(S_STATE_DEFAULT), "");
			streamfx::ffmpeg::tools::avoption_list_add_entries(context->priv_data, "rc", [&p](const AVOption* opt) {
				// Ignore options that are "deprecated" but not flagged as such.
				if (opt->default_val.i64 & (1 << 23))
					return;

				char buffer[1024];
				snprintf(buffer, sizeof(buffer), "%s.%s", ST_I18N_RATECONTROL_MODE, opt->name);
				obs_property_list_add_string(p, D_TRANSLATE(buffer), opt->name);
			});
		}

		if (streamfx::ffmpeg::tools::avoption_exists(context->priv_data, "multipass")) {
			auto p =
				obs_properties_add_list(grp, ST_KEY_RATECONTROL_MULTIPASS, D_TRANSLATE(ST_I18N_RATECONTROL_MULTIPASS),
										OBS_COMBO_TYPE_LIST, OBS_COMBO_FORMAT_STRING);
			obs_property_list_add_string(p, D_TRANSLATE(S_STATE_DEFAULT), "");
			streamfx::ffmpeg::tools::avoption_list_add_entries(
				context->priv_data, "multipass", [&p](const AVOption* opt) {
					char buffer[1024];
					snprintf(buffer, sizeof(buffer), "%s.%s", ST_I18N_RATECONTROL_MULTIPASS, opt->name);
					obs_property_list_add_string(p, D_TRANSLATE(buffer), opt->name);
				});
		} else {
			auto p = streamfx::util::obs_properties_add_tristate(grp, ST_KEY_RATECONTROL_TWOPASS,
																 D_TRANSLATE(ST_I18N_RATECONTROL_TWOPASS));
		}

		{
			auto p = obs_properties_add_int_slider(grp, ST_KEY_RATECONTROL_LOOKAHEAD,
												   D_TRANSLATE(ST_I18N_RATECONTROL_LOOKAHEAD), -1, 32, 1);
			obs_property_int_set_suffix(p, " frames");
			//obs_property_set_modified_callback(p, modified_lookahead);
		}

		{
			auto p = streamfx::util::obs_properties_add_tristate(grp, ST_KEY_RATECONTROL_ADAPTIVEI,
																 D_TRANSLATE(ST_I18N_RATECONTROL_ADAPTIVEI));
		}

		if (strcmp(codec->name, "h264_nvenc") == 0) {
			auto p = streamfx::util::obs_properties_add_tristate(grp, ST_KEY_RATECONTROL_ADAPTIVEB,
																 D_TRANSLATE(ST_I18N_RATECONTROL_ADAPTIVEB));
		}
	}

	{
		obs_properties_t* grp = props;
		if (!streamfx::util::are_property_groups_broken()) {
			grp = obs_properties_create();
			obs_properties_add_group(props, ST_I18N_RATECONTROL_LIMITS, D_TRANSLATE(ST_I18N_RATECONTROL_LIMITS),
									 OBS_GROUP_NORMAL, grp);
		}

		{
			auto p = obs_properties_add_float_slider(grp, ST_KEY_RATECONTROL_LIMITS_QUALITY,
													 D_TRANSLATE(ST_I18N_RATECONTROL_LIMITS_QUALITY), 0, 51, 0.01);
		}

		{
			auto p = obs_properties_add_int(grp, ST_KEY_RATECONTROL_LIMITS_BITRATE_TARGET,
											D_TRANSLATE(ST_I18N_RATECONTROL_LIMITS_BITRATE_TARGET), -1,
											std::numeric_limits<int32_t>::max(), 1);
			obs_property_int_set_suffix(p, " kbit/s");
		}

		{
			auto p = obs_properties_add_int(grp, ST_KEY_RATECONTROL_LIMITS_BITRATE_MAXIMUM,
											D_TRANSLATE(ST_I18N_RATECONTROL_LIMITS_BITRATE_MAXIMUM), -1,
											std::numeric_limits<int32_t>::max(), 1);
			obs_property_int_set_suffix(p, " kbit/s");
		}

		{
			auto p = obs_properties_add_int(grp, ST_KEY_RATECONTROL_LIMITS_BUFFERSIZE,
											D_TRANSLATE(ST_I18N_RATECONTROL_LIMITS_BUFFERSIZE), 0,
											std::numeric_limits<int32_t>::max(), 1);
			obs_property_int_set_suffix(p, " kbit");
		}
	}

	{
		obs_properties_t* grp = props;
		if (!streamfx::util::are_property_groups_broken()) {
			grp = obs_properties_create();
			obs_properties_add_group(props, ST_I18N_RATECONTROL_QP, D_TRANSLATE(ST_I18N_RATECONTROL_QP),
									 OBS_GROUP_NORMAL, grp);
		}

		{
			auto p = obs_properties_add_int_slider(grp, ST_KEY_RATECONTROL_QP_MINIMUM,
												   D_TRANSLATE(ST_I18N_RATECONTROL_QP_MINIMUM), -1, 51, 1);
		}
		{
			auto p = obs_properties_add_int_slider(grp, ST_KEY_RATECONTROL_QP_MAXIMUM,
												   D_TRANSLATE(ST_I18N_RATECONTROL_QP_MAXIMUM), -1, 51, 1);
		}

		{
			auto p = obs_properties_add_int_slider(grp, ST_KEY_RATECONTROL_QP_I, D_TRANSLATE(ST_I18N_RATECONTROL_QP_I),
												   -1, 51, 1);
		}
		{
			auto p = obs_properties_add_int_slider(grp, ST_KEY_RATECONTROL_QP_P, D_TRANSLATE(ST_I18N_RATECONTROL_QP_P),
												   -1, 51, 1);
		}
		{
			auto p = obs_properties_add_int_slider(grp, ST_KEY_RATECONTROL_QP_B, D_TRANSLATE(ST_I18N_RATECONTROL_QP_B),
												   -1, 51, 1);
		}
	}

	{
		obs_properties_t* grp = props;
		if (!streamfx::util::are_property_groups_broken()) {
			grp = obs_properties_create();
			obs_properties_add_group(props, ST_I18N_AQ, D_TRANSLATE(ST_I18N_AQ), OBS_GROUP_NORMAL, grp);
		}

		{
			auto p =
				streamfx::util::obs_properties_add_tristate(grp, ST_KEY_AQ_SPATIAL, D_TRANSLATE(ST_I18N_AQ_SPATIAL));
			obs_property_set_modified_callback(p, modified_aq);
		}
		{
			auto p =
				obs_properties_add_int_slider(grp, ST_KEY_AQ_STRENGTH, D_TRANSLATE(ST_I18N_AQ_STRENGTH), -1, 15, 1);
		}
		{
			auto p =
				streamfx::util::obs_properties_add_tristate(grp, ST_KEY_AQ_TEMPORAL, D_TRANSLATE(ST_I18N_AQ_TEMPORAL));
		}
	}

	{
		obs_properties_t* grp = props;
		if (!streamfx::util::are_property_groups_broken()) {
			grp = obs_properties_create();
			obs_properties_add_group(props, ST_I18N_OTHER, D_TRANSLATE(ST_I18N_OTHER), OBS_GROUP_NORMAL, grp);
		}

		{
			auto p =
				obs_properties_add_int_slider(grp, ST_KEY_OTHER_BFRAMES, D_TRANSLATE(ST_I18N_OTHER_BFRAMES), -1, 4, 1);
			obs_property_int_set_suffix(p, " frames");
		}

		{
			auto p = obs_properties_add_list(grp, ST_KEY_OTHER_BFRAMEREFERENCEMODE,
											 D_TRANSLATE(ST_I18N_OTHER_BFRAMEREFERENCEMODE), OBS_COMBO_TYPE_LIST,
											 OBS_COMBO_FORMAT_STRING);
			obs_property_list_add_string(p, D_TRANSLATE(S_STATE_DEFAULT), "");
			streamfx::ffmpeg::tools::avoption_list_add_entries(
				context->priv_data, "b_ref_mode", [&p](const AVOption* opt) {
					char buffer[1024];
					snprintf(buffer, sizeof(buffer), "%s.%s", ST_I18N_OTHER_BFRAMEREFERENCEMODE, opt->name);
					obs_property_list_add_string(p, D_TRANSLATE(buffer), opt->name);
				});
		}

		{
			auto p = streamfx::util::obs_properties_add_tristate(grp, ST_KEY_OTHER_ZEROLATENCY,
																 D_TRANSLATE(ST_I18N_OTHER_ZEROLATENCY));
		}

		{
			auto p = streamfx::util::obs_properties_add_tristate(grp, ST_KEY_OTHER_WEIGHTEDPREDICTION,
																 D_TRANSLATE(ST_I18N_OTHER_WEIGHTEDPREDICTION));
		}

		{
			auto p = streamfx::util::obs_properties_add_tristate(grp, ST_KEY_OTHER_NONREFERENCEPFRAMES,
																 D_TRANSLATE(ST_I18N_OTHER_NONREFERENCEPFRAMES));
		}

		{
			auto p = obs_properties_add_int_slider(grp, ST_KEY_OTHER_REFERENCEFRAMES,
												   D_TRANSLATE(ST_I18N_OTHER_REFERENCEFRAMES), -1,
												   (strcmp(codec->name, "h264_nvenc") == 0) ? 16 : 4, 1);
			obs_property_int_set_suffix(p, " frames");
		}

		if (streamfx::ffmpeg::tools::avoption_exists(context->priv_data, "ldkfs")) {
			auto p = obs_properties_add_int_slider(grp, ST_KEY_OTHER_LOWDELAYKEYFRAMESCALE,
												   D_TRANSLATE(ST_I18N_OTHER_LOWDELAYKEYFRAMESCALE), -1, 255, 1);
		}
	}
}

void nvenc::get_runtime_properties(obs_properties_t* props, const AVCodec*, AVCodecContext*)
{
	obs_property_set_enabled(obs_properties_get(props, ST_KEY_PRESET), false);
	obs_property_set_enabled(obs_properties_get(props, ST_KEY_TUNE), false);
	obs_property_set_enabled(obs_properties_get(props, ST_I18N_RATECONTROL), false);
	obs_property_set_enabled(obs_properties_get(props, ST_KEY_RATECONTROL_MODE), false);
	obs_property_set_enabled(obs_properties_get(props, ST_KEY_RATECONTROL_TWOPASS), false);
	obs_property_set_enabled(obs_properties_get(props, ST_KEY_RATECONTROL_MULTIPASS), false);
	obs_property_set_enabled(obs_properties_get(props, ST_KEY_RATECONTROL_LOOKAHEAD), false);
	obs_property_set_enabled(obs_properties_get(props, ST_KEY_RATECONTROL_ADAPTIVEI), false);
	obs_property_set_enabled(obs_properties_get(props, ST_KEY_RATECONTROL_ADAPTIVEB), false);
	obs_property_set_enabled(obs_properties_get(props, ST_I18N_RATECONTROL_LIMITS), true);
	obs_property_set_enabled(obs_properties_get(props, ST_KEY_RATECONTROL_LIMITS_BUFFERSIZE), true);
	obs_property_set_enabled(obs_properties_get(props, ST_KEY_RATECONTROL_LIMITS_BITRATE_TARGET), true);
	obs_property_set_enabled(obs_properties_get(props, ST_KEY_RATECONTROL_LIMITS_BITRATE_MAXIMUM), true);
	obs_property_set_enabled(obs_properties_get(props, ST_I18N_RATECONTROL_LIMITS_QUALITY), false);
	obs_property_set_enabled(obs_properties_get(props, ST_I18N_RATECONTROL_QP), false);
	obs_property_set_enabled(obs_properties_get(props, ST_KEY_RATECONTROL_QP_MINIMUM), false);
	obs_property_set_enabled(obs_properties_get(props, ST_KEY_RATECONTROL_QP_MAXIMUM), false);
	obs_property_set_enabled(obs_properties_get(props, ST_KEY_RATECONTROL_QP_I), false);
	obs_property_set_enabled(obs_properties_get(props, ST_KEY_RATECONTROL_QP_P), false);
	obs_property_set_enabled(obs_properties_get(props, ST_KEY_RATECONTROL_QP_B), false);
	obs_property_set_enabled(obs_properties_get(props, ST_I18N_AQ), false);
	obs_property_set_enabled(obs_properties_get(props, ST_KEY_AQ_SPATIAL), false);
	obs_property_set_enabled(obs_properties_get(props, ST_KEY_AQ_STRENGTH), false);
	obs_property_set_enabled(obs_properties_get(props, ST_KEY_AQ_TEMPORAL), false);
	obs_property_set_enabled(obs_properties_get(props, ST_I18N_OTHER), false);
	obs_property_set_enabled(obs_properties_get(props, ST_KEY_OTHER_BFRAMES), false);
	obs_property_set_enabled(obs_properties_get(props, ST_KEY_OTHER_BFRAMEREFERENCEMODE), false);
	obs_property_set_enabled(obs_properties_get(props, ST_KEY_OTHER_ZEROLATENCY), false);
	obs_property_set_enabled(obs_properties_get(props, ST_KEY_OTHER_WEIGHTEDPREDICTION), false);
	obs_property_set_enabled(obs_properties_get(props, ST_KEY_OTHER_NONREFERENCEPFRAMES), false);
	obs_property_set_enabled(obs_properties_get(props, ST_KEY_OTHER_REFERENCEFRAMES), false);
	obs_property_set_enabled(obs_properties_get(props, ST_KEY_OTHER_LOWDELAYKEYFRAMESCALE), false);
}

void nvenc::update(obs_data_t* settings, const AVCodec* codec, AVCodecContext* context)
{
	if (const char* v = obs_data_get_string(settings, ST_KEY_PRESET);
		!context->internal && (v != nullptr) && (v[0] != '\0')) {
		av_opt_set(context->priv_data, "preset", v, AV_OPT_SEARCH_CHILDREN);
	}

	{ // Rate Control
		const char* v = obs_data_get_string(settings, ST_KEY_RATECONTROL_MODE);
		if (!context->internal && (v != nullptr) && (v[0] != '\0')) {
			av_opt_set(context->priv_data, "rc", v, AV_OPT_SEARCH_CHILDREN);
		}

		// Decode the name into useful flags.
		bool have_bitrate       = false;
		bool have_bitrate_range = false;
		bool have_quality       = false;
		bool have_qp_limits     = false;
		bool have_qp            = false;
		if (v && is_cbr(v)) {
			have_bitrate = true;

			if (!context->internal)
				av_opt_set_int(context->priv_data, "cbr", 1, AV_OPT_SEARCH_CHILDREN);

			// Support for OBS Studio
			obs_data_set_string(settings, "rate_control", "CBR");
		} else if (v && is_vbr(v)) {
			have_bitrate       = true;
			have_bitrate_range = true;
			have_quality       = true;
			have_qp_limits     = true;
			have_qp            = true;

			if (!context->internal)
				av_opt_set_int(context->priv_data, "cbr", 0, AV_OPT_SEARCH_CHILDREN);

			// Support for OBS Studio
			obs_data_set_string(settings, "rate_control", "VBR");
		} else if (v && is_cqp(v)) {
			have_qp = true;

			if (!context->internal)
				av_opt_set_int(context->priv_data, "cbr", 0, AV_OPT_SEARCH_CHILDREN);

			// Support for OBS Studio
			obs_data_set_string(settings, "rate_control", "CQP");
		} else {
			have_bitrate       = true;
			have_bitrate_range = true;
			have_quality       = true;
			have_qp_limits     = true;
			have_qp            = true;

			if (!context->internal)
				av_opt_set_int(context->priv_data, "cbr", 0, AV_OPT_SEARCH_CHILDREN);
		}

		if (!context->internal) {
			if (streamfx::ffmpeg::tools::avoption_exists(context->priv_data, "multipass")) {
				// Multi-Pass
				if (const char* v = obs_data_get_string(settings, ST_KEY_RATECONTROL_MULTIPASS);
					(v != nullptr) && (v[0] != '\0')) {
					av_opt_set(context->priv_data, "multipass", v, AV_OPT_SEARCH_CHILDREN);
					av_opt_set_int(context->priv_data, "2pass", 0, AV_OPT_SEARCH_CHILDREN);
				}
			} else {
				// Two-Pass
				if (int tp = static_cast<int>(obs_data_get_int(settings, ST_KEY_RATECONTROL_TWOPASS)); tp > -1) {
					av_opt_set_int(context->priv_data, "2pass", tp ? 1 : 0, AV_OPT_SEARCH_CHILDREN);
				}
			}

			// Look Ahead # of Frames
			int la = static_cast<int>(obs_data_get_int(settings, ST_KEY_RATECONTROL_LOOKAHEAD));
			if (!streamfx::util::is_tristate_default(la)) {
				av_opt_set_int(context->priv_data, "rc-lookahead", la, AV_OPT_SEARCH_CHILDREN);
			}

			// Adaptive I-Frames
			if (int64_t adapt_i = obs_data_get_int(settings, ST_KEY_RATECONTROL_ADAPTIVEI);
				!streamfx::util::is_tristate_default(adapt_i) && (la != 0)) {
				// no-scenecut is inverted compared to our UI.
				av_opt_set_int(context->priv_data, "no-scenecut", 1 - adapt_i, AV_OPT_SEARCH_CHILDREN);
			}

			// Adaptive B-Frames
			if (std::string_view("h264_nvenc") == codec->name) {
				if (int64_t adapt_b = obs_data_get_int(settings, ST_KEY_RATECONTROL_ADAPTIVEB);
					!streamfx::util::is_tristate_default(adapt_b) && (la != 0)) {
					av_opt_set_int(context->priv_data, "b_adapt", adapt_b, AV_OPT_SEARCH_CHILDREN);
				}
			}
		}

		if (have_bitrate) {
			int64_t v = obs_data_get_int(settings, ST_KEY_RATECONTROL_LIMITS_BITRATE_TARGET);

			// Allow OBS to specify a maximum allowed bitrate.
			if (obs_data_get_int(settings, "bitrate") != obs_data_get_default_int(settings, "bitrate")) {
				// obs_data_has_user_value(X, Y) is also true if obs_data_set_Z(X, Y, obs_data_get_Z(X, Y))
				v = std::clamp<int64_t>(v, -1, obs_data_get_int(settings, "bitrate"));
			}

			if (v > -1) {
				context->bit_rate = static_cast<int>(v * 1000);
			}
		} else {
			context->bit_rate = 0;
		}
		if (have_bitrate_range) {
			if (int64_t max = obs_data_get_int(settings, ST_KEY_RATECONTROL_LIMITS_BITRATE_MAXIMUM); max > -1) {
				context->rc_max_rate = static_cast<int>(max * 1000);
			} else {
				context->rc_max_rate = context->bit_rate;
			}
			context->rc_min_rate = context->bit_rate;
		} else {
			context->rc_min_rate = context->bit_rate;
			context->rc_max_rate = context->bit_rate;
		}
		{ // Support for OBS Studio
			obs_data_set_int(settings, "bitrate", context->rc_max_rate);
		}

		// Buffer Size
		if (have_bitrate || have_bitrate_range) {
			if (int64_t v = obs_data_get_int(settings, ST_KEY_RATECONTROL_LIMITS_BUFFERSIZE); v > -1)
				context->rc_buffer_size = static_cast<int>(v * 1000);
		} else {
			context->rc_buffer_size = 0;
		}

		if (!context->internal) {
			// Quality Limits
			if (have_qp_limits) {
				if (int qmin = static_cast<int>(obs_data_get_int(settings, ST_KEY_RATECONTROL_QP_MINIMUM)); qmin > -1)
					context->qmin = qmin;
				if (int qmax = static_cast<int>(obs_data_get_int(settings, ST_KEY_RATECONTROL_QP_MAXIMUM)); qmax > -1)
					context->qmax = qmax;
			} else {
				context->qmin = -1;
				context->qmax = -1;
			}

			// Quality Target
			if (have_quality) {
				if (double_t v = obs_data_get_double(settings, ST_KEY_RATECONTROL_LIMITS_QUALITY); v > 0) {
					av_opt_set_double(context->priv_data, "cq", v, AV_OPT_SEARCH_CHILDREN);
				}
			} else {
				av_opt_set_double(context->priv_data, "cq", 0, AV_OPT_SEARCH_CHILDREN);
			}

			// QP Settings
			if (have_qp) {
				if (int64_t qp = obs_data_get_int(settings, ST_KEY_RATECONTROL_QP_I); qp > -1)
					av_opt_set_int(context->priv_data, "init_qpI", static_cast<int>(qp), AV_OPT_SEARCH_CHILDREN);
				if (int64_t qp = obs_data_get_int(settings, ST_KEY_RATECONTROL_QP_P); qp > -1)
					av_opt_set_int(context->priv_data, "init_qpP", static_cast<int>(qp), AV_OPT_SEARCH_CHILDREN);
				if (int64_t qp = obs_data_get_int(settings, ST_KEY_RATECONTROL_QP_B); qp > -1)
					av_opt_set_int(context->priv_data, "init_qpB", static_cast<int>(qp), AV_OPT_SEARCH_CHILDREN);
			}
		}
	}

	if (!context->internal) { // AQ
		int64_t saq = obs_data_get_int(settings, ST_KEY_AQ_SPATIAL);
		int64_t taq = obs_data_get_int(settings, ST_KEY_AQ_TEMPORAL);

		if (strcmp(codec->name, "h264_nvenc") == 0) {
			if (!streamfx::util::is_tristate_default(saq))
				av_opt_set_int(context->priv_data, "spatial-aq", saq, AV_OPT_SEARCH_CHILDREN);
			if (!streamfx::util::is_tristate_default(taq))
				av_opt_set_int(context->priv_data, "temporal-aq", taq, AV_OPT_SEARCH_CHILDREN);
		} else {
			if (!streamfx::util::is_tristate_default(saq))
				av_opt_set_int(context->priv_data, "spatial_aq", saq, AV_OPT_SEARCH_CHILDREN);
			if (!streamfx::util::is_tristate_default(taq))
				av_opt_set_int(context->priv_data, "temporal_aq", taq, AV_OPT_SEARCH_CHILDREN);
		}
		if (streamfx::util::is_tristate_enabled(saq))
			if (int64_t aqs = obs_data_get_int(settings, ST_KEY_AQ_STRENGTH); aqs > -1)
				av_opt_set_int(context->priv_data, "aq-strength", static_cast<int>(aqs), AV_OPT_SEARCH_CHILDREN);
	}

	if (!context->internal) { // Other
		if (int64_t bf = obs_data_get_int(settings, ST_KEY_OTHER_BFRAMES); bf > -1)
			av_opt_set_int(context, "bf", bf, AV_OPT_SEARCH_CHILDREN);

		if (int64_t zl = obs_data_get_int(settings, ST_KEY_OTHER_ZEROLATENCY); !streamfx::util::is_tristate_default(zl))
			av_opt_set_int(context->priv_data, "zerolatency", zl, AV_OPT_SEARCH_CHILDREN);
		if (int64_t nrp = obs_data_get_int(settings, ST_KEY_OTHER_NONREFERENCEPFRAMES);
			!streamfx::util::is_tristate_default(nrp))
			av_opt_set_int(context->priv_data, "nonref_p", nrp, AV_OPT_SEARCH_CHILDREN);
		if (int64_t v = obs_data_get_int(settings, ST_KEY_OTHER_REFERENCEFRAMES); v > -1)
			av_opt_set_int(context, "refs", v, AV_OPT_SEARCH_CHILDREN);

		int64_t wp = obs_data_get_int(settings, ST_KEY_OTHER_WEIGHTEDPREDICTION);
		if ((context->max_b_frames > 0) && streamfx::util::is_tristate_enabled(wp)) {
			DLOG_WARNING("[%s] Weighted Prediction disabled because of B-Frames being used.", codec->name);
			av_opt_set_int(context->priv_data, "weighted_pred", 0, AV_OPT_SEARCH_CHILDREN);
		} else if (!streamfx::util::is_tristate_default(wp)) {
			av_opt_set_int(context->priv_data, "weighted_pred", wp, AV_OPT_SEARCH_CHILDREN);
		}

		if (const char* v = obs_data_get_string(settings, ST_KEY_OTHER_BFRAMEREFERENCEMODE);
			(v != nullptr) && (v[0] != '\0')) {
			av_opt_set(context->priv_data, "b_ref_mode", v, AV_OPT_SEARCH_CHILDREN);
		}

		if (auto v = obs_data_get_int(settings, ST_KEY_OTHER_LOWDELAYKEYFRAMESCALE); v > -1) {
			av_opt_set_int(context->priv_data, "ldkfs", v, AV_OPT_SEARCH_CHILDREN);
		}
	}
}

void nvenc::log_options(obs_data_t*, const AVCodec* codec, AVCodecContext* context)
{
	using namespace ::streamfx::ffmpeg;

	DLOG_INFO("[%s]   NVIDIA NVENC:", codec->name);
	tools::print_av_option_string2(context, "preset", "    Preset",
								   [](int64_t v, std::string_view o) { return std::string(o); });
	tools::print_av_option_string2(context, "rc", "    Rate Control",
								   [](int64_t v, std::string_view o) { return std::string(o); });
	tools::print_av_option_bool(context, "2pass", "      Two Pass");
	tools::print_av_option_string2(context, "multipass", "      Multi-Pass",
								   [](int64_t v, std::string_view o) { return std::string(o); });
	tools::print_av_option_int(context, "rc-lookahead", "      Look-Ahead", "Frames");
	tools::print_av_option_bool(context, "no-scenecut", "      Adaptive I-Frames", true);
	if (strcmp(codec->name, "h264_nvenc") == 0)
		tools::print_av_option_bool(context, "b_adapt", "      Adaptive B-Frames");

	DLOG_INFO("[%s]       Bitrate:", codec->name);
	tools::print_av_option_int(context, "b", "        Target", "bits/sec");
	tools::print_av_option_int(context, "minrate", "        Minimum", "bits/sec");
	tools::print_av_option_int(context, "maxrate", "        Maximum", "bits/sec");
	tools::print_av_option_int(context, "bufsize", "        Buffer", "bits");
	DLOG_INFO("[%s]       Quality:", codec->name);
	tools::print_av_option_int(context, "cq", "        Target", "");
	tools::print_av_option_int(context, "qmin", "        Minimum", "");
	tools::print_av_option_int(context, "qmax", "        Maximum", "");
	DLOG_INFO("[%s]       Quantization Parameters:", codec->name);
	tools::print_av_option_int(context, "init_qpI", "        I-Frame", "");
	tools::print_av_option_int(context, "init_qpP", "        P-Frame", "");
	tools::print_av_option_int(context, "init_qpB", "        B-Frame", "");
	tools::print_av_option_int(context, "qp_cb_offset", "        CB Offset", "");
	tools::print_av_option_int(context, "qp_cr_offset", "        CR Offset", "");

	tools::print_av_option_int(context, "bf", "    B-Frames", "Frames");
	tools::print_av_option_string2(context, "b_ref_mode", "      Reference Mode",
								   [](int64_t v, std::string_view o) { return std::string(o); });

	DLOG_INFO("[%s]     Adaptive Quantization:", codec->name);
	if (strcmp(codec->name, "h264_nvenc") == 0) {
		tools::print_av_option_bool(context, "spatial-aq", "      Spatial AQ");
		tools::print_av_option_int(context, "aq-strength", "        Strength", "");
		tools::print_av_option_bool(context, "temporal-aq", "      Temporal AQ");
	} else {
		tools::print_av_option_bool(context, "spatial_aq", "      Spatial AQ");
		tools::print_av_option_int(context, "aq-strength", "        Strength", "");
		tools::print_av_option_bool(context, "temporal_aq", "      Temporal AQ");
	}

	DLOG_INFO("[%s]     Other:", codec->name);
	tools::print_av_option_bool(context, "zerolatency", "      Zero Latency");
	tools::print_av_option_bool(context, "weighted_pred", "      Weighted Prediction");
	tools::print_av_option_bool(context, "nonref_p", "      Non-reference P-Frames");
	tools::print_av_option_int(context, "refs", "      Reference Frames", "Frames");
	tools::print_av_option_bool(context, "strict_gop", "      Strict GOP");
	tools::print_av_option_bool(context, "aud", "      Access Unit Delimiters");
	tools::print_av_option_bool(context, "bluray-compat", "      Bluray Compatibility");
	tools::print_av_option_bool(context, "a53cc", "      A53 Closed Captions");
	tools::print_av_option_int(context, "dpb_size", "      DPB Size", "Frames");
	tools::print_av_option_int(context, "ldkfs", "      DPB Size", "Frames");
	tools::print_av_option_bool(context, "extra_sei", "      Extra SEI Data");
	tools::print_av_option_bool(context, "udu_sei", "      User SEI Data");
	tools::print_av_option_bool(context, "intra-refresh", "      Intra-Refresh");
	tools::print_av_option_bool(context, "single-slice-intra-refresh", "      Single Slice Intra-Refresh");
	tools::print_av_option_bool(context, "constrained-encoding", "      Constrained Encoding");
}

void streamfx::encoder::ffmpeg::handler::nvenc::migrate(obs_data_t* settings, uint64_t version, const AVCodec* codec,
														AVCodecContext* context)
{
	// Only test for A.B.C in A.B.C.D
	version = version & STREAMFX_MASK_UPDATE;

#define COPY_UNSET(TYPE, FROM, TO)                                              \
	if (obs_data_has_user_value(settings, FROM)) {                              \
		obs_data_set_##TYPE(settings, TO, obs_data_get_##TYPE(settings, FROM)); \
		obs_data_unset_user_value(settings, FROM);                              \
	}

	if (version <= STREAMFX_MAKE_VERSION(0, 8, 0, 0)) {
		COPY_UNSET(int, "RateControl.Bitrate.Target", ST_KEY_RATECONTROL_LIMITS_BITRATE_TARGET);
		COPY_UNSET(int, "RateControl.Bitrate.Maximum", ST_KEY_RATECONTROL_LIMITS_BITRATE_TARGET);
		COPY_UNSET(int, "RateControl.BufferSize", ST_KEY_RATECONTROL_LIMITS_BUFFERSIZE);
		COPY_UNSET(int, "RateControl.Quality.Minimum", ST_KEY_RATECONTROL_QP_MINIMUM);
		COPY_UNSET(int, "RateControl.Quality.Maximum", ST_KEY_RATECONTROL_QP_MAXIMUM);
		COPY_UNSET(double, "RateControl.Quality.Target", ST_KEY_RATECONTROL_LIMITS_QUALITY);
	}

	if (version < STREAMFX_MAKE_VERSION(0, 11, 0, 0)) {
		obs_data_unset_user_value(settings, "Other.AccessUnitDelimiter");
		obs_data_unset_user_value(settings, "Other.DecodedPictureBufferSize");
	}

	if (version < STREAMFX_MAKE_VERSION(0, 11, 1, 0)) {
		// Preset
		if (auto v = obs_data_get_int(settings, ST_KEY_PRESET); v != -1) {
			std::map<int64_t, std::string> preset{
				{0, "default"}, {1, "slow"}, {2, "medium"}, {3, "fast"}, {4, "hp"},        {5, "hq"},
				{6, "bd"},      {7, "ll"},   {8, "llhq"},   {9, "llhp"}, {10, "lossless"}, {11, "losslesshp"},
			};
			if (auto k = preset.find(v); k != preset.end()) {
				obs_data_set_string(settings, ST_KEY_PRESET, k->second.data());
			}
		}

		// Rate Control Mode
		if (auto v = obs_data_get_int(settings, ST_KEY_RATECONTROL_MODE); v != -1) {
			if (!obs_data_has_user_value(settings, ST_KEY_RATECONTROL_MODE))
				v = 4;

			switch (v) {
			case 0: // CQP
				obs_data_set_string(settings, ST_KEY_RATECONTROL_MODE, "constqp");
				break;
			case 2: // VBR_HQ
				obs_data_set_int(settings, ST_KEY_RATECONTROL_TWOPASS, 1);
				obs_data_set_string(settings, ST_KEY_RATECONTROL_MULTIPASS, "qres");
			case 1: // VBR
				obs_data_set_string(settings, ST_KEY_RATECONTROL_MODE, "vbr");
				break;
			case 5: // CBR_LD_HQ
				obs_data_set_int(settings, ST_KEY_OTHER_LOWDELAYKEYFRAMESCALE, 1);
			case 4: // CBR_HQ
				obs_data_set_int(settings, ST_KEY_RATECONTROL_TWOPASS, 1);
				obs_data_set_string(settings, ST_KEY_RATECONTROL_MULTIPASS, "qres");
			case 3: // CBR
				obs_data_set_string(settings, ST_KEY_RATECONTROL_MODE, "cbr");
				break;
			}
		}

		// Target Quality
		if (auto v = obs_data_get_double(settings, ST_KEY_RATECONTROL_LIMITS_QUALITY); v > 0) {
			obs_data_set_double(settings, ST_KEY_RATECONTROL_LIMITS_QUALITY, (v / 100.) * 51.);
		}

		// B-Frame Reference Modes
		if (auto v = obs_data_get_int(settings, ST_KEY_OTHER_BFRAMEREFERENCEMODE); v != -1) {
			std::map<int64_t, std::string> preset{
				{0, "default"},
				{1, "each"},
				{2, "middle"},
			};
			if (auto k = preset.find(v); k != preset.end()) {
				obs_data_set_string(settings, ST_KEY_OTHER_BFRAMEREFERENCEMODE, k->second.data());
			}
		}
	}

#undef COPY_UNSET
}