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UI: Disable NVENC lookahead if dynamic bitrate on

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Lookahead causes playback issues when bitrate changes mid-stream.
Bitrate can suddenly drop to 0, and other issues such as audio
stuttering on Twitch have been observed.  Turning off lookahead fixed
the issue.  Lookahead is normally off by default anyway.
This commit is contained in:
jp9000 2019-09-10 12:01:10 -07:00
commit b486cc6f9e
1 changed files with 7 additions and 0 deletions
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7
UI/window-basic-main-outputs.cpp
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@ -1229,6 +1229,10 @@ void AdvancedOutput::UpdateStreamSettings()
{
bool applyServiceSettings = config_get_bool(main->Config(), "AdvOut",
"ApplyServiceSettings");
bool dynBitrate =
config_get_bool(main->Config(), "Output", "DynamicBitrate");
const char *streamEncoder =
config_get_string(main->Config(), "AdvOut", "Encoder");
OBSData settings = GetDataFromJsonFile("streamEncoder.json");
ApplyEncoderDefaults(settings, h264Streaming);
@ -1237,6 +1241,9 @@ void AdvancedOutput::UpdateStreamSettings()
obs_service_apply_encoder_settings(main->GetService(), settings,
nullptr);
if (dynBitrate && astrcmpi(streamEncoder, "jim_nvenc") == 0)
obs_data_set_bool(settings, "lookahead", false);
video_t *video = obs_get_video();
enum video_format format = video_output_get_format(video);