Устранить сжатие панели звонка и распараллелить HEVC внутри кадра

tools/chatgui/src/live_video_encoder.cpp

@@ -10,6 +10,7 @@ extern "C" {
 #include <libavcodec/avcodec.h>
 #include <libavcodec/bsf.h>
 #include <libavutil/hwcontext.h>
+#include <libavutil/cpu.h>
 #include <libavutil/opt.h>
 #include <libswscale/swscale.h>
 #endif
@@ -169,8 +170,12 @@ bool LiveVideoEncoder::open(const LiveVideoConfig& config, Backend backend) {
             if (name == "libx264" || name == "libx265") {
                 av_dict_set(&options, "preset", "ultrafast", 0); av_dict_set(&options, "tune", "zerolatency", 0);
                 av_dict_set(&options, "forced-idr", "1", 0);
+                const int workers = std::clamp(av_cpu_count(), 1, 4);
                 QByteArray params = name == "libx264" ? "scenecut=0:open-gop=0:repeat-headers=0"
-                    : "bframes=0:rc-lookahead=0:open-gop=0:pools=1:frame-threads=1:log-level=error";
+                    : "bframes=0:rc-lookahead=0:open-gop=0:frame-threads=1:wpp=1:log-level=error:pools=" + QByteArray::number(workers);
+                if (name == "libx265")
+                    DEBUG_DEBUG(DEBUG_CATEGORY_DEBUG, "live HEVC parallelism workers=%d frame_threads=1 wpp=1 cpu_count=%d",
+                        workers, av_cpu_count());
                 if (constrained) {
                     c->thread_count = 1;
                     av_dict_set(&options, "profile", name == "libx264" ? "baseline" : "main", 0);