From f9a00f3ed4d5feebf87a58e83cac7efd97adb4da Mon Sep 17 00:00:00 2001
From: Cameron Gutman <aicommander@gmail.com>
Date: Wed, 23 Aug 2023 23:42:09 -0500
Subject: [PATCH] Fix FFmpeg logging going to stdout rather than our log file

---
 src/main.cpp | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)

diff --git a/src/main.cpp b/src/main.cpp
index 45d45d5c..e5352d1b 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -534,6 +534,31 @@ main(int argc, char *argv[]) {
   else {
     av_log_set_level(AV_LOG_DEBUG);
   }
+  av_log_set_callback([](void *ptr, int level, const char *fmt, va_list vl) {
+    static int print_prefix = 1;
+    char buffer[1024];
+
+    av_log_format_line(ptr, level, fmt, vl, buffer, sizeof(buffer), &print_prefix);
+    if (level <= AV_LOG_FATAL) {
+      BOOST_LOG(fatal) << buffer;
+    }
+    else if (level <= AV_LOG_ERROR) {
+      BOOST_LOG(error) << buffer;
+    }
+    else if (level <= AV_LOG_WARNING) {
+      BOOST_LOG(warning) << buffer;
+    }
+    else if (level <= AV_LOG_INFO) {
+      BOOST_LOG(info) << buffer;
+    }
+    else if (level <= AV_LOG_VERBOSE) {
+      // AV_LOG_VERBOSE is less verbose than AV_LOG_DEBUG
+      BOOST_LOG(debug) << buffer;
+    }
+    else {
+      BOOST_LOG(verbose) << buffer;
+    }
+  });
 
   sink = boost::make_shared<text_sink>();