From d2332a3761af9e340a780d7fc70780efd2cc66c7 Mon Sep 17 00:00:00 2001
From: Alex Xu <alex_y_xu@yahoo.ca>
Date: Mon, 2 Sep 2013 14:33:52 -0400
Subject: never overwrite

---
 aencode.sh | 6 +++---
 vencode.sh | 8 ++++----
 2 files changed, 7 insertions(+), 7 deletions(-)

diff --git a/aencode.sh b/aencode.sh
index af101be..11e04bf 100755
--- a/aencode.sh
+++ b/aencode.sh
@@ -17,9 +17,9 @@ for d in bgm sfx; do
   pushd $(dirname $0)/www/dump/${d}
   for f in *.ogg; do
     OUT=${f%.ogg}
-    ffmpeg -y -i $f -c:a pcm_s16le ${OUT}.wav
-    opusenc --bitrate 64 ${OUT}.wav ${OUT}.opus
-    ffmpeg -n -i ${OUT}.wav -c:a libfdk_aac -vbr 2 ${OUT}.m4a || true
+    [[ -f ${OUT}.wav ]] || ffmpeg -i $f -c:a pcm_s16le ${OUT}.wav
+    [[ -f ${OUT}.opus ]] || opusenc --bitrate 64 ${OUT}.wav ${OUT}.opus
+    [[ -f ${OUT}.m4a ]] || ffmpeg -i ${OUT}.wav -c:a libfdk_aac -vbr 2 ${OUT}.m4a
   done
   popd
 done
diff --git a/vencode.sh b/vencode.sh
index 472fc06..aeaed79 100755
--- a/vencode.sh
+++ b/vencode.sh
@@ -11,13 +11,13 @@ cd $(dirname $0)/www/dump/video
 
 ffmpeg() {
   set -x
-  command ${FFMPEG} -n -threads ${THREADS} ${FFMPEG_FLAGS} "$@"
+  command ${FFMPEG} -threads ${THREADS} ${FFMPEG_FLAGS} "$@"
   set +x
 }
 
 for f in *.mkv; do
   OUT=${f%.mkv}
-  ffmpeg -i $f -c:v libx264 -preset slower -tune animation -c:a libfdk_aac ${OUT}.mp4
-  ffmpeg -i $f -c:v libvpx -crf 15 -b:v 1M -c:a copy ${OUT}.webm
-  ffmpeg -i $f -c:v libtheora -qscale:v 6 -c:a copy ${OUT}.ogv
+  [[ -f ${OUT}.mp4 ]] || ffmpeg -i $f -c:v libx264 -preset slower -tune animation -c:a libfdk_aac ${OUT}.mp4
+  [[ -f ${OUT}.webm ]] || ffmpeg -i $f -c:v libvpx -crf 15 -b:v 1M -c:a copy ${OUT}.webm
+  [[ -f ${OUT}.ogv ]] || ffmpeg -i $f -c:v libtheora -qscale:v 6 -c:a copy ${OUT}.ogv
 done
-- 
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