[FFmpeg-user] strange ffmpeg effect on bash

[Lars Täuber]

Hi,

I've got a problem with ffmpeg in a shell script.
It's a bash script to be precise.
The script looks like this:

===================
#!/bin/bash

LOG=${0%.sh}.log
ERR=${0%.sh}.err
JOBS=jobs.lst

>"$LOG"
>"$ERR"

while read LINE
do
    FILE=""
    NAME=""

    eval $LINE

    test -z "$NAME" -o ! -r "$FILE" && continue

    ffmpeg -an -sn -i "$FILE" -vcodec ffvhuff -t 30 -f matroska -y "$NAME.mkv" >>"$LOG" 2>>"$ERR"
#    mencoder -ovc copy -oac pcm -o "$NAME.avi" -endpos 30 "$FILE" >>"$LOG" 2>>"$ERR"
    echo $? >> "$LOG"

done < "$JOBS"
echo "Ende" >> "$LOG"
===================

With the ffmpeg command the script ends after the first line read from "$JOBS". Somehow bash interpretes its completion like a »break« command.
When you replace the ffmpeg command with the (commented out) mplayer command (or any other programm) all lines from "$JOBS" are read and interpreted as expected.

The "$JOBS" file looks like this:
===================
FILE=a.avi;NAME=b
FILE=c.avi;NAME=d
FILE=e.avi;NAME=e
===================

How comes?
What's the special thing here with ffmpeg?

Maybe I should ask this on a bash mailing list?

Thanks
Lars


PS:
GNU bash, Version 4.2.8(1)-release (x86_64-pc-linux-gnu)
FFmpeg version git-N-28820-g7f125c3
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