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+#!/bin/bash
+
+# Written by Bob Igo from the MythTV Store at http://MythiC.TV
+# with contributions from TJC and Sarah Hayes
+# Email: bob@stormlogic.com
+#
+# If you run into problems with this script, please send me email
+
+# This is alpha code to auto-generate thumbnails for previews in MythVideo.
+# It won't currently work on some filenames that have spaces in them.
+# It's surely just a matter of escaping or quoting, but I have yet to find
+# the right incantation.
+
+# example usage:
+# find -L /myth/video -wholename '*.covers' -prune -o -name '*.resume' -o -type f -exec screenshooter.sh -v {} \;
+
+# limitations:
+# --
+# In an MBE/SBE/FE setup this might get the settings for the wrong machine...
+# The script has no AI to know if a grabbed frame is useful to identify the video, only that it was able to grab it.
+# Doesn't clean up after itself if videos are deleted, though MythTV may do this on its own.
+# Minimum theoretical compatible video length is 4 seconds. Shorter videos will not work with this version.
+# Surely more limitations I can't think of because it's my baby :)
+
+Usage() {
+ echo "USAGE:"
+ echo `basename $0` "-v PATHNAME [-s SECONDS] [-c] [-b HOSTNAME] [-u USERNAME] [-p PASSWORD] [-o]"
+ echo "-v: pathname to Video"
+ echo "-s: number of Seconds to skip before capturing (270 by default)"
+ echo "-c: Clobber any previous screenshot found for this video (off by default)"
+ echo "-b: mysql server (Backend) hostname (localhost by default)"
+ echo "-u: mysql Username (mythtv by default)"
+ echo "-p: mysql Password (mythtv by default)"
+ echo "-o: verbOse mode (off by default)"
+ echo "-x: check for valid video eXtension (off by default)"
+ echo
+ echo "EXAMPLE: $0 -v /myth/video/HDTV/shuttle.mpg -c -s 30"
+ exit 3
+}
+
+if [ -z $1 ]; then
+ Usage
+fi
+
+V_MISSING=1
+
+while getopts "v:sbupochx" FLAG ; do
+ case "$FLAG" in
+ v) VIDEO_PATHNAME="$OPTARG"
+ V_MISSING=0;;
+ s) SKIPAHEAD="$OPTARG";;
+ c) CLOBBER=1;;
+ b) BACKEND_HOSTNAME="$OPTARG";;
+ u) DBUSERNAME="$OPTARG";;
+ p) DBPASSWORD="$OPTARG";;
+ o) VERBOSE=1;;
+ x) EXTENSION_CHECK=1;;
+ *) Usage;;
+ esac
+done
+
+if [ $V_MISSING == 1 ]; then
+ Usage
+fi
+
+# Declaring Variables here and assigning sensible defaults.
+
+# SKIPAHEAD is the number of seconds to skip ahead before starting the frame capture.
+# Set it to an arbitrary value if none is specified.
+SKIPAHEAD=${SKIPAHEAD:-"270"}
+BACKEND_HOSTNAME=${BACKEND_HOSTNAME:-"localhost"}
+DBUSERNAME=${DBUSERNAME:-"mythtv"}
+DBPASSWORD=${DBPASSWORD:-"mythtv"}
+# Defaults to quiet.
+VERBOSE=${VERBOSE:-0}
+# Unless otherwise told, do not clobber existing cover files.
+CLOBBER=${CLOBBER:-0}
+# Unless otherwise told, do not check the file extension against
+# MythTV's list of registered video file types.
+EXTENSION_CHECK=${EXTENSION_CHECK:-0}
+
+VIDEO_CAPTURE_HOME=$(mysql -u $DBUSERNAME --password=$DBPASSWORD -h $BACKEND_HOSTNAME mythconverg -sNBe "select data from settings where value='VideoArtworkDir' limit 1")
+if [ ! -d "$VIDEO_CAPTURE_HOME" ] ; then
+ echo "Directory $VIDEO_CAPTURE_HOME does not exist, nowhere to put the screen shot!"
+ echo "Have you configured MythVideo yet?"
+ exit 1
+fi
+
+VIDEO_HOME=$(mysql -u $DBUSERNAME --password=$DBPASSWORD -h $BACKEND_HOSTNAME mythconverg -sNBe "select data from settings where value='VideoStartupDir' limit 1")
+if [ ! -d "$VIDEO_HOME" ] ; then
+ echo "Directory $VIDEO_HOME does not exist, nowhere to put the screen shot!"
+ echo "Have you configured MythVideo yet?"
+ exit 1
+fi
+
+VIDEO_FILENAME=$(basename "$VIDEO_PATHNAME")
+VIDEO_EXTENSION=${VIDEO_FILENAME##*.}
+# Since we cron'd lets first make sure the validity of the file
+if [ "$EXTENSION_CHECK" == "1" ]; then
+ EXCHECK=$(mysql -u $DBUSERNAME --password=$DBPASSWORD -h $BACKEND_HOSTNAME mythconverg -sNBe "select f_ignore from videotypes where extension=\"$VIDEO_EXTENSION\";")
+ #excheck returns blank, it found nothing.
+ if [ "$EXCHECK" == "" ]; then
+ if [ "$VERBOSE" == "1" ]; then
+ echo "$VIDEO_EXTENSION does not appear to be a valid media file, skipping."
+ fi
+ exit 1
+ else
+ # It is valid, but should we ignore it. If so then excheck will equal 1.
+ if [ "EXCHECK" == "1" ]; then
+ if [ "$VERBOSE" == "1" ]; then
+ echo "$VIDEO_EXTENSION is set to ignore."
+ fi
+ exit 1
+ fi
+ # It is valid, it's not set to ignore.
+ if [ "$VERBOSE" == "1" ]; then
+ echo "$VIDEO_EXTENSION appears in the Database, checking further."
+ fi
+ EXCHECK=$(mysql -u $DBUSERNAME --password=$DBPASSWORD -h $BACKEND_HOSTNAME mythconverg -sNBe "select title from videometadata where filename=\"$VIDEO_PATHNAME\";")
+ #Right, the file is supposed to be playable. Has it been imported to the Db yet?
+ if [ "$EXCHECK" == "" ] ; then
+ if [ "$VERBOSE" == "1" ]; then
+ echo "$VIDEO_FILENAME does not exist in the database."
+ fi
+ exit 1
+ # If you decide you want the system to 'auto import' the video then comment out
+ # the exit line and uncomment the rest of it. Bewarned, this is sucky SQL at
+ # the best but will give sensible defaults.
+ #
+ # if [ "$VERBOSE" == "1" ]; then
+ # echo "Importing $VIDEO_FILENAME in to database."
+ # fi
+ # mysql -u $DBUSERNAME --password=$DBPASSWORD -h $BACKEND_HOSTNAME mythconverg -sNBe "insert into videometadata (intid, title, director, plot, rating, inetref, year, userrating, length, showlevel, filename, coverfile, childid, browse, playcommand, category) values (' ', '$VIDEO_FILENAME', 'Unknown', 'Unknown', 'NR', '00000000', 1895, 0.0, 0, 1, '$VIDEO_PATHNAME', 'No Cover', -1, 1, ' ', 0);"
+ fi
+ fi
+fi
+
+if [ "$CLOBBER" -eq 0 ]; then
+ # Since we're not clobbering, first check to see if this video already has a coverfile entry in MySQL:
+ SQL_CMD="select coverfile from videometadata where filename=\"$VIDEO_PATHNAME\";"
+ CURRENT_COVERFILE=`mysql -u $DBUSERNAME --password=$DBPASSWORD -h $BACKEND_HOSTNAME mythconverg -B -e "$SQL_CMD" | tail -1`
+
+ if [[ "$CURRENT_COVERFILE" != "" ]] && [[ "$CURRENT_COVERFILE" != "No Cover" ]]; then
+ # there's already a cover file for this video
+ if [ "$VERBOSE" == "1" ]; then
+ echo "$VIDEO_FILENAME has cover file, skipping."
+ fi
+ exit 2
+ fi
+fi
+
+
+# Swap the video file extension for png. Should work assuming the extension only appears ONCE!
+VIDEO_CAPTURE_PATHNAME="$VIDEO_CAPTURE_HOME/$VIDEO_FILENAME.png"
+
+# How many frames of video to capture. We'll grab the last frame as our screenshot.
+if [ "$VIDEO_EXTENSION" == "m4v" ]; then
+ FRAMES_TO_CAPTURE="90"
+ SHOTFILE="000000"$FRAMES_TO_CAPTURE".png"
+else
+ FRAMES_TO_CAPTURE="05"
+fi
+
+SHOTFILE="000000"$FRAMES_TO_CAPTURE".png"
+VIDEO_STATS="/tmp/screenshooter_video_stats.txt"
+
+cd /tmp
+
+# The video we're processing may be shorter than SKIPAHEAD seconds.
+# Keep trying to capture until we find a SKIPAHEAD value within the length of the video.
+# Give up if we reach 0 seconds.
+while [ ! -f "$SHOTFILE" ]; do
+ /usr/bin/mplayer -ss $SKIPAHEAD -vf scale=640:-2 -ao null -vo png -quiet -frames $FRAMES_TO_CAPTURE -identify "$VIDEO_PATHNAME" &> $VIDEO_STATS &
+ TIMEOUT=9
+
+ # Some video formats will play audio only. This loop gives the above command 20 seconds to
+ # finish, otherwise it gets killed.
+ while [ -n "`ps -p $! --no-heading`" ]; do
+ TIMEOUT=$(expr $TIMEOUT - 1)
+ if [ "$TIMEOUT" -le 0 ]; then
+ kill -9 $!
+ break
+ fi
+ sleep 1
+ done
+
+ SKIPAHEAD=$(expr $SKIPAHEAD / 2)
+ if [ "$SKIPAHEAD" -le 0 ]; then
+ break
+ fi
+done
+
+if [ -f "$SHOTFILE" ]; then
+ # Now, the video_capture is taken, and the name of the shot is in $SHOTFILE
+ # Rename it and move it to the place where video_captures live.
+ /bin/mv -f "$SHOTFILE" "$VIDEO_CAPTURE_PATHNAME"
+ /bin/rm -f 000000*png
+ chown mythtv: "$VIDEO_CAPTURE_PATHNAME"
+
+ # We've got the shotfile nailed, now calculate video run length.
+ VIDEO_LENGTH_IN_SECONDS=`grep ID_LENGTH $VIDEO_STATS | awk -F'=' '{print $2}'`
+ VIDEO_LENGTH_IN_INTEGER_SECONDS=${VIDEO_LENGTH_IN_SECONDS/%.*/}
+ if [ $VIDEO_LENGTH_IN_INTEGER_SECONDS -lt 60 ]; then
+ VIDEO_LENGTH_IN_MINUTES="1"
+ else
+ VIDEO_LENGTH_IN_MINUTES=$(expr $VIDEO_LENGTH_IN_INTEGER_SECONDS / 60)
+ fi
+
+ SQL_CMD="update videometadata set length=\"$MIN_LENGTH\" where filename=\"$VIDEO_PATHNAME\";"
+ mysql -u $DBUSERNAME --password=$DBPASSWORD -h $BACKEND_HOSTNAME mythconverg -e "$SQL_CMD"
+
+
+ # put the screenshot pathname and any runlength info into videometadatatable
+
+ # Pre-escape any single or double quotes for the SQL command.
+
+ VIDEO_CAPTURE_PATHNAME=`echo $VIDEO_CAPTURE_PATHNAME | sed -e "s/'/\\\'/g" -e 's/"/\\\"/g' `
+ VIDEO_PATHNAME=`echo $VIDEO_PATHNAME | sed -e "s/'/\\\'/g" -e 's/"/\\\"/g' `
+ SQL_CMD="update videometadata set coverfile=\"$VIDEO_CAPTURE_PATHNAME\", length=\"$VIDEO_LENGTH_IN_MINUTES\" where filename=\"$VIDEO_PATHNAME\";"
+
+ mysql -u $DBUSERNAME --password=$DBPASSWORD -h $BACKEND_HOSTNAME mythconverg -e "$SQL_CMD"
+else
+ echo "No image could be captured from $VIDEO_PATHNAME"
+ exit 1
+fi