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encoders/ffmpeg/nvenc: Allow OBS to detect or override bitrate

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We won't allow OBS to override everything, just the bare minimum necessary for Replay Buffer, Dynamic Bitrate and generic Streaming.
This commit is contained in:
Michael Fabian 'Xaymar' Dirks 2021-12-03 08:22:08 +01:00
parent 567620a6ad
commit 2505b193c8
1 changed files with 28 additions and 5 deletions
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33
source/encoders/handlers/nvenc_shared.cpp
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@ -547,6 +547,10 @@ void nvenc::update(obs_data_t* settings, const AVCodec* codec, AVCodecContext* c
switch (rc) {
case ratecontrolmode::CQP:
have_qp = true;
{ // Support for OBS Studio
obs_data_set_string(settings, "rate_control", "CQP");
}
break;
case ratecontrolmode::INVALID:
case ratecontrolmode::CBR:
@ -557,6 +561,10 @@ void nvenc::update(obs_data_t* settings, const AVCodec* codec, AVCodecContext* c
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");
}
break;
case ratecontrolmode::VBR:
case ratecontrolmode::VBR_HQ:
@ -565,6 +573,10 @@ void nvenc::update(obs_data_t* settings, const AVCodec* codec, AVCodecContext* c
have_quality = true;
have_qp = true;
have_qp_limits = true;
{ // Support for OBS Studio
obs_data_set_string(settings, "rate_control", "VBR");
}
break;
}
@ -599,22 +611,33 @@ void nvenc::update(obs_data_t* settings, const AVCodec* codec, AVCodecContext* c
if (have_bitrate) {
int64_t v = obs_data_get_int(settings, ST_KEY_RATECONTROL_LIMITS_BITRATE_TARGET);
if (v > -1)
context->bit_rate = static_cast<int>(v * 1000);
// Support for Replay Buffer
obs_data_set_int(settings, "bitrate", v);
// 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)
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) {