diff --git a/README.md b/README.md
index 6f3bbaa43a..4ce53a199e 100755
--- a/README.md
+++ b/README.md
@@ -97,7 +97,7 @@ cd srs/trunk
 </pre>
 
 <strong>Step 2:</strong> build SRS,
-<strong>Requires Centos6.x/Ubuntu12 32/64bits, others see Build([CN][v2_CN_Build],[EN][v2_EN_Build]).</strong>
+<strong>Requires Centos6.x/Ubuntu12 32/64bits, for others OS recommend [docker][docker], see Build([CN][v2_CN_Build],[EN][v2_EN_Build]).</strong>
 
 <pre>
 ./configure && make
@@ -982,6 +982,7 @@ Winlin
 [srs-librtmp]: https://github.com/ossrs/srs-librtmp
 [gitlab]: https://gitlab.com/winlinvip/srs-gitlab
 [console]: http://ossrs.net:1985/console
+[docker]: https://github.com/ossrs/srs-docker/tree/centos#usage
 
 [v1_CN_Git]: https://github.com/ossrs/srs/wiki/v1_CN_Git
 [v1_EN_Git]: https://github.com/ossrs/srs/wiki/v1_EN_Git
diff --git a/trunk/auto/depends.sh b/trunk/auto/depends.sh
index 79e7de0701..8f0922f488 100755
--- a/trunk/auto/depends.sh
+++ b/trunk/auto/depends.sh
@@ -681,6 +681,9 @@ fi
 # live transcoding, ffmpeg-4.1, x264-core157, lame-3.99.5, libaacplus-2.0.2.
 #####################################################################################
 if [ $SRS_FFMPEG_TOOL = YES ]; then
+    if [[ -f /usr/local/bin/ffmpeg && ! -f ${SRS_OBJS}/ffmpeg/bin/ffmpeg ]]; then
+        mkdir -p ${SRS_OBJS}/ffmpeg/bin && ln -sf /usr/local/bin/ffmpeg ${SRS_OBJS}/ffmpeg/bin/ffmpeg
+    fi
     if [[ -f ${SRS_OBJS}/ffmpeg/bin/ffmpeg ]]; then
         echo "ffmpeg-4.1 is ok.";
     else