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set b_ref_mode=0 for ffmpeg NVENC encoder #2074

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merged 1 commit into from
Apr 20, 2024
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set b_ref_mode=0 for ffmpeg NVENC encoder #2074

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2 changes: 2 additions & 0 deletions alvr/server/cpp/platform/linux/EncodePipelineNvEnc.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -151,6 +151,8 @@ alvr::EncodePipelineNvEnc::EncodePipelineNvEnc(Renderer *render,
// Delay isn't actually a delay instead its how many surfaces to encode at a time
av_opt_set_int(encoder_ctx->priv_data, "delay", 1, 0);
av_opt_set_int(encoder_ctx->priv_data, "forced-idr", 1, 0);
// work around ffmpeg default not working for older NVIDIA cards
av_opt_set_int(encoder_ctx->priv_data, "b_ref_mode", 0, 0);

encoder_ctx->pix_fmt = AV_PIX_FMT_CUDA;
encoder_ctx->width = width;
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