1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
|
#!/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
|
