From 2d9556f5f3a1998fd9218bffc443bee6d53d6932 Mon Sep 17 00:00:00 2001
From: Blake Blackshear <blakeb@blakeshome.com>
Date: Fri, 17 Mar 2023 17:14:57 -0500
Subject: [PATCH] set threads to 2 (#5747)

---
 docs/docs/configuration/index.md |  4 ++--
 frigate/config.py                | 13 +++++++++++--
 2 files changed, 13 insertions(+), 4 deletions(-)

diff --git a/docs/docs/configuration/index.md b/docs/docs/configuration/index.md
index 4859c7e75..62c3a5dee 100644
--- a/docs/docs/configuration/index.md
+++ b/docs/docs/configuration/index.md
@@ -167,7 +167,7 @@ birdseye:
 # More information about presets at https://docs.frigate.video/configuration/ffmpeg_presets
 ffmpeg:
   # Optional: global ffmpeg args (default: shown below)
-  global_args: -hide_banner -loglevel warning
+  global_args: -hide_banner -loglevel warning -threads 2
   # Optional: global hwaccel args (default: shown below)
   # NOTE: See hardware acceleration docs for your specific device
   hwaccel_args: []
@@ -176,7 +176,7 @@ ffmpeg:
   # Optional: global output args
   output_args:
     # Optional: output args for detect streams (default: shown below)
-    detect: -f rawvideo -pix_fmt yuv420p
+    detect: -threads 2 -f rawvideo -pix_fmt yuv420p
     # Optional: output args for record streams (default: shown below)
     record: preset-record-generic
     # Optional: output args for rtmp streams (default: shown below)
diff --git a/frigate/config.py b/frigate/config.py
index f318c8346..d19dfbfd0 100644
--- a/frigate/config.py
+++ b/frigate/config.py
@@ -395,9 +395,18 @@ class BirdseyeCameraConfig(BaseModel):
     )
 
 
-FFMPEG_GLOBAL_ARGS_DEFAULT = ["-hide_banner", "-loglevel", "warning"]
+# Note: Setting threads to less than 2 caused several issues with recording segments
+# https://github.com/blakeblackshear/frigate/issues/5659
+FFMPEG_GLOBAL_ARGS_DEFAULT = ["-hide_banner", "-loglevel", "warning", "-threads", "2"]
 FFMPEG_INPUT_ARGS_DEFAULT = "preset-rtsp-generic"
-DETECT_FFMPEG_OUTPUT_ARGS_DEFAULT = ["-f", "rawvideo", "-pix_fmt", "yuv420p"]
+DETECT_FFMPEG_OUTPUT_ARGS_DEFAULT = [
+    "-threads",
+    "2",
+    "-f",
+    "rawvideo",
+    "-pix_fmt",
+    "yuv420p",
+]
 RTMP_FFMPEG_OUTPUT_ARGS_DEFAULT = "preset-rtmp-generic"
 RECORD_FFMPEG_OUTPUT_ARGS_DEFAULT = "preset-record-generic"