[extension-ffmpeg] repeatable build instructions

Ensure the build instructions are repeatable once the ffmpeg repository is checked out.

[extension-ffmpeg] repeatable build instructions
Ensure the build instructions are repeatable once the ffmpeg repository is checked out.
8d5cab8a · Sebastian Roth · GitHub · 9adf9542 · 8d5cab8a
Commit 8d5cab8a authored May 11, 2018 by Sebastian Roth Committed by GitHub May 11, 2018
Showing with 1 additions and 1 deletions
extensions/ffmpeg/README.md
--- a/extensions/ffmpeg/README.md
+++ b/extensions/ffmpeg/README.md
@@ -70,7 +70,7 @@ COMMON_OPTIONS="\
    --enable-decoder=flac \
    " && \
 cd "${FFMPEG_EXT_PATH}/jni" && \
-git clone git://source.ffmpeg.org/ffmpeg ffmpeg && cd ffmpeg && \
+(git -C ffmpeg pull || git clone git://source.ffmpeg.org/ffmpeg ffmpeg) && cd ffmpeg && \
 ./configure \
    --libdir=android-libs/armeabi-v7a \
    --arch=arm \