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Use AMF remote desktop latency mode for HEVC broadcasts

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evgeny committed 2026-10-18 21:51:54 +02:00
1 parent bd92ac0c88
commit a51af91718
1 file changed
+5 -3
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tools/chatgui/src/live_video_encoder.cpp
+5 -3
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@@ -221,7 +221,9 @@ bool LiveVideoEncoder::open(const LiveVideoConfig& config, Backend backend) {
if (config.codec == STREAM_MEDIA_H265) av_dict_set(&options, "tier", "main", 0);
}
} else if (name.endsWith("_amf")) {
av_dict_set(&options, "usage", "ultralowlatency", 0);
// Для трансляции HEVC используем режим remote desktop; профиль звонков сохраняет ultra-low latency.
const char* usage = !constrained && config.codec == STREAM_MEDIA_H265 ? "lowlatency" : "ultralowlatency";
av_dict_set(&options, "usage", usage, 0);
av_dict_set(&options, "quality", "speed", 0);
bool asyncDepth = av_opt_find(c->priv_data, "async_depth", nullptr, 0, 0);
if (asyncDepth) av_dict_set(&options, "async_depth", "1", 0);
@@ -235,8 +237,8 @@ bool LiveVideoEncoder::open(const LiveVideoConfig& config, Backend backend) {
if (config.codec == STREAM_MEDIA_H265) av_dict_set(&options, "profile_tier", "main", 0);
}
DEBUG_INFO(DEBUG_CATEGORY_VIDEO,
"desktop AMF low latency settings name=%s usage=ultralowlatency quality=speed async_depth=%s forced_idr=%d",
name.constData(), asyncDepth ? "1" : "driver", m->forcedKeys);
"desktop AMF low latency settings name=%s usage=%s quality=speed async_depth=%s forced_idr=%d",
name.constData(), usage, asyncDepth ? "1" : "driver", m->forcedKeys);
} else if (name == "libvpx-vp9" || name == "libaom-av1") {
av_dict_set(&options, "deadline", "realtime", 0); av_dict_set(&options, "cpu-used", "8", 0);
av_dict_set(&options, "lag-in-frames", "0", 0); av_dict_set(&options, "row-mt", "1", 0);