diff --git a/conf/config.ini b/conf/config.ini
index ab5a6a1e..78d89406 100644
--- a/conf/config.ini
+++ b/conf/config.ini
@@ -17,7 +17,7 @@ snapRoot=./www/snap/
 defaultSnap=./www/logo.png
 
 [ffmpeg]
-#FFmpeg可执行程序绝对路径
+#FFmpeg可执行程序路径,支持相对路径/绝对路径
 bin=/usr/bin/ffmpeg
 #FFmpeg拉流再推流的命令模板，通过该模板可以设置再编码的一些参数
 cmd=%s -re -i %s -c:a aac -strict -2 -ar 44100 -ab 48k -c:v libx264 -f flv %s
diff --git a/server/FFmpegSource.cpp b/server/FFmpegSource.cpp
index 92aa3457..abb950bc 100644
--- a/server/FFmpegSource.cpp
+++ b/server/FFmpegSource.cpp
@@ -90,7 +90,7 @@ void FFmpegSource::play(const string &ffmpeg_cmd_key, const string &src_url,cons
         }
     }
 
-    char cmd[1024] = {0};
+    char cmd[2048] = {0};
     snprintf(cmd, sizeof(cmd), ffmpeg_cmd.data(), File::absolutePath("", ffmpeg_bin).data(), src_url.data(), dst_url.data());
     auto log_file = ffmpeg_log.empty() ? "" : File::absolutePath("", ffmpeg_log);
     _process.run(cmd, log_file);