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Top Forums Shell Programming and Scripting Help need to make a shell script run for ffmpeg vhook watermaking in shell Post 302240837 by wingchun22 on Friday 26th of September 2008 06:04:45 PM
Help need to make a shell script run for ffmpeg vhook watermaking in shell

i have a small problem getting a batxh shell script to run in shell

this is the code

echo "flv-watermarker converter"
echo "$vhook - $output - $fonts - $text"
if (($# ==0))
echo "Usage: flvwatermarker [flv files] ..."
while (($# !=0 ))
ffmpeg -i $1 -sameq -vhook '$vhook/ $fonts/Verdana.TTF -t $text -x 5 -y 5' $output/${1%.*}.flv
echo "Finished with flv-watermarker converter"

the problem seems to be centered around the ffmpeg command, something maybe to do with the ' ' wrapping around the vhook part command

this is a strange problem , if i take the ffmpeg command and run it directly from the shell promt it works, but inside this shell script it always seems to stop working around the ffmpeg part

i have other simlier shell scripts without the ' ' wrapping around parts of the ffmpeg command and they work fine, just this one seems to not work at all, i have tried adding " " to wrap the hole ffmpeg command, remove the ' ' from the vhook part, but it does not seem to work for me

i'm new to shell scripting and unix, any help or advise as to way this is not working whould be very usefull, thanks in advance

ps this was the orgianl script before i moved some commands into variables, on the ffmpeg line, to stop that long line always breaking onto two lines in nano

echo "flv-watermarker converter"
if (($# ==0))
echo "Usage: flvwatermarker [flv files] ..."

while (($# !=0 ))

ffmpeg -i $1 -sameq -vhook '/usr/local/cpffmpeg/lib/vhook/ /usr/share/fonts/TrueType/Verdana.TTF -t MYSITE.COM -x 5 -y 5' /var/www/vhosts/$1.flv

echo "Finished with flv-watermarker converter"

Last edited by wingchun22; 09-26-2008 at 07:11 PM..
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pfsoutffmpeg(1) 					      General Commands Manual						   pfsoutffmpeg(1)

pfsoutffmpeg - Read pfs frames from stdin and forward them to ffmpeg program SYNOPSIS
pfsoutffmpeg [--help] <ffmpeg options> output_file DESCRIPTION
This command is a wrapper for ffmpeg program and can be used to write pfs frames to a compressed video. Check the examples section to for sample usage and see manual of ffmpeg for further information. Note that the usage of '-f' switch (input format specifier) and '-i' switch (input file specifier) of the ffmpeg program is implemented inside the script and is therefore not allowed. EXAMPLES
pfsinrgbe frame%04d.hdr --frames 100:2:200 | pfstmo_reinhard02 -s | pfsgamma -g 1.7 | pfsoutffmpeg -qscale 4 test.avi 1. Read HDR frames in RGBE format with the following names: frame0100.hdr, frame0102.hdr, frame0104.hdr,... frame0200.hdr 2. Apply local tone mapping operator to each frame (Reinhard2002 model, part of the PFSTMO package) 3. Apply gamma correction to each tone mapped frame 4. Compress frames to test.avi animation SEE ALSO
ffmpeg(1) pfsin(1) pfstmo_reinhard02(1) pfsgamma(1) BUGS
Frames smaller than 512x384 can cause broken pipe error, due to bug in ppm pipe reading routine in ffmpeg. Please report bugs and comments to Rafal Mantiuk <> or Grzegorz Krawczyk <>. pfsoutffmpeg(1)

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