Added zerocopy, improved stream robustness and reduced latency

server-test4k.sh

@@ -0,0 +1,32 @@
+#!/usr/bin/env python3
+import subprocess, sys
+
+fps = sys.argv[1] if len(sys.argv) > 1 else "60"
+size = sys.argv[2] if len(sys.argv) > 2 else "3840x2160"
+port = sys.argv[3] if len(sys.argv) > 3 else "5000"
+bitrate = sys.argv[4] if len(sys.argv) > 4 else "40M"
+
+cmd = [
+    "ffmpeg", "-hide_banner", "-v", "error",
+    "-f", "lavfi", "-i",
+    f"testsrc2=size={size}:rate={fps}:duration=1000",
+    "-an",
+    "-c:v", "libx265",
+    "-preset", "ultrafast",
+    "-tune", "zerolatency",
+    "-pix_fmt", "yuv420p",
+    "-b:v", bitrate,
+    "-x265-params", "bframes=0:keyint=30:scenecut=0",
+    "-f", "rtp",
+    "-payload_type", "96",
+    "-sdp_file", "/tmp/gdvapi_test4k.sdp",
+    f"rtp://127.0.0.1:{port}",
+]
+print("running:", " ".join(cmd))
+try:
+    subprocess.run(cmd, check=True)
+except KeyboardInterrupt:
+    pass
+except subprocess.CalledProcessError as e:
+    print("ffmpeg exited", e.returncode)
+    sys.exit(1)