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Diffstat (limited to 'abs/core/linhes-scripts/screenshooter.sh')
| -rwxr-xr-x | abs/core/linhes-scripts/screenshooter.sh | 230 |
1 files changed, 230 insertions, 0 deletions
diff --git a/abs/core/linhes-scripts/screenshooter.sh b/abs/core/linhes-scripts/screenshooter.sh new file mode 100755 index 0000000..94ea6fd --- /dev/null +++ b/abs/core/linhes-scripts/screenshooter.sh @@ -0,0 +1,230 @@ +#!/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 $BACKEND_HOSTNAME mythconverg -sNBe "select data from settings where value='VideoStartupDir' limit 1") +VIDEO_HOME=(${VIDEO_HOME//:/ }); +VIDEO_HOME_COUNT=${#VIDEO_HOME[@]} +for (( i=0; i<${VIDEO_HOME_COUNT}; i++ )); +do + if [ ! -d "${VIDEO_HOME[${i}]}" ] ; then + echo "Directory ${VIDEO_HOME[${i}]} does not exist, nowhere to put the screen shot!" + echo "Have you configured MythVideo yet?" + exit 1 + fi +done + +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 |