28 lines
1.1 KiB
Diff
28 lines
1.1 KiB
Diff
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From 5fdda179ed2768304a98d48f4074e54fe7cbf5b3 Mon Sep 17 00:00:00 2001
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From: David Rosca <nowrep@gmail.com>
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Date: Fri, 30 Jun 2023 07:23:41 +0200
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Subject: [PATCH] obs-ffmpeg: Increase initial buffer fullness for VAAPI
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Default ffmpeg initial buffer fullness (75%) is too low
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and results in significantly lower video quality on AMD cards.
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Changing it to 100% fixes the quality and also matches what
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AMF encoder is doing.
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---
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plugins/obs-ffmpeg/obs-ffmpeg-vaapi.c | 2 ++
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1 file changed, 2 insertions(+)
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diff --git a/plugins/obs-ffmpeg/obs-ffmpeg-vaapi.c b/plugins/obs-ffmpeg/obs-ffmpeg-vaapi.c
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index c5aa0128a54b9..1a6ecd63ae4d4 100644
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--- a/plugins/obs-ffmpeg/obs-ffmpeg-vaapi.c
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+++ b/plugins/obs-ffmpeg/obs-ffmpeg-vaapi.c
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@@ -300,6 +300,8 @@ static bool vaapi_update(void *data, obs_data_t *settings, bool hevc)
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enc->context->level = level;
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enc->context->bit_rate = bitrate * 1000;
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enc->context->rc_max_rate = maxrate * 1000;
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+ enc->context->rc_initial_buffer_occupancy =
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+ (maxrate ? maxrate : bitrate) * 1000;
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enc->context->width = obs_encoder_get_width(enc->encoder);
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enc->context->height = obs_encoder_get_height(enc->encoder);
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