Adds ffmpeg-extract-video-frames.sh script

scripts/shell/ffmpeg-extract-video-frames.sh

@@ -0,0 +1,46 @@
+#!/bin/sh
+
+filename=$1
+
+if [ -z "$filename" ]; then
+  echo "You must provide a file for the script."
+  echo "Example:"
+  echo "     `basename $0` foo.mp4"
+  exit 1
+fi
+
+if [ ! -f "$filename" ]; then
+  echo "The file provided does not exist."
+  exit 1
+fi
+
+friendly_filename=`sed -E 's/[^[:alnum:][:space:]]+/_/g' <<< "$filename"`
+out_dirname="frames-$friendly_filename"
+
+#debug
+if false; then
+  echo "filename:"
+  echo "    $filename"
+
+  echo "out_dirname:"
+  echo "    $out_dirname"
+
+  echo "friendly_filename:"
+  echo "    $friendly_filename"
+
+  exit 0
+fi
+
+mkdir -p $out_dirname
+ffmpeg -i $filename -c:v png $out_dirname/frame%04d.png
+
+if [ $? -ne 0 ]; then
+  echo ""
+  echo ""
+  echo ""
+  echo "The ffmpeg command did not return an exit status of 0."
+  echo "Exiting script..."
+
+  rm -r $out_dirname
+  exit 1
+fi