new command: webm2opus

1 files changed, 32 insertions, 0 deletions

diff --git a/dot/local/bin/webm2opus b/dot/local/bin/webm2opus
new file mode 100755
index 0000000..07688dd
--- /dev/null
+++ b/dot/local/bin/webm2opus
@@ -0,0 +1,32 @@
+#!/bin/sh
+OVERWRITE=
+printf_ds()
+{
+  local s
+  [ "$2" = 1 ] && s= || s=s
+  printf "$1" "$2" "$s"
+}
+
+fail=0
+skip=0
+for f in "$@"
+do
+  out=${f%.webm}.opus
+  if [ ! "$OVERWRITE" -a -e "$out" ]
+  then
+    skip=$((skip + 1))
+    continue
+  fi
+  ffmpeg -i "$f" -c:a copy "$out" || fail=$((fail + 1))
+done
+
+if [ "$skip" -gt 0 ]
+then
+  printf_ds 'Warning: refused to overwrite %d file%s\n' "$skip" "$s" >&2
+fi
+
+if [ "$fail" -gt 0 ]
+then
+  printf_ds 'Error: ffmpeg failed to convert %d file%s\n' "$fail" >&2
+  exit 1
+fi