Changes between Version 37 and Version 38 of FilteringGuide

Timestamp:

Jan 9, 2015, 5:09:07 AM (6 years ago)

Author:

c-14

Comment:

bash syntax changes

FilteringGuide

@@ -106 +106 @@
 cd $path
 
-filter="-vf \"yadif=0:-1:0, scale=400:226, drawtext=fontfile=/usr/share/fonts/truetype/DroidSans.ttf: \
-text='tod- %X':x=(w-text_w)/2:y=H-60 :fontcolor=white :box=1:boxcolor=0x00000000@1\""
-codec="-vcodec libx264  -pix_fmt yuv420p -b:v 700k -r 25 -maxrate 700k -bufsize 5097k"
+filter=(-vf "yadif=0:-1:0, scale=400:226, drawtext=fontfile=/usr/share/fonts/truetype/DroidSans.ttf: \
+text='tod- %X':x=(w-text_w)/2:y=H-60 :fontcolor=white :box=1:boxcolor=0x00000000@1")
+codec=(-vcodec libx264  -pix_fmt yuv420p -b:v 700k -r 25 -maxrate 700k -bufsize 5097k)
 
-command_line="ffmpeg -i $in_file $filter $codec -an $out_file"
+command_line="ffmpeg -i $in_file \"${filter[@]}\" \"${codec[@]}\" -an $out_file"
 
 echo $command_line
-eval $command_line
+$command_line
 exit
 }}}
 Note that the double quotes " around the whole filtergraph have been escaped \" and the filtergraph spans more than one line, the echo command shows the full command as it is executed. Useful for debugging.
 
-The {{{eval}}} invocation of the $command_line variable is required to avoid loss of the embedded escaped quotes which occurs if it is absent. Other shells may behave differently.
+The arrays in the $command_line variable are required to avoid loss of the embedded escaped quotes which occurs if they is absent. Other shells may behave differently.