#! /bin/bash

SRC="/var/data/spielfilme"
DST="/var/tmp/spielfilme/webm"

for f in $(find "$SRC" \( -name '*.jpg' -prune \) -o -type f -print); do
    t="${f/$SRC/$DST}"
    t="${t%.*}.webm"
    if test -s "${t}"; then
	continue;
    fi
    test -d "${t%/*}" || mkdir -p "${t%/*}"
    #ffmpeg -i "$f" -b 1500k -vcodec libvpx -acodec libvorbis -ab 160000 -f webm -g 30 "$t"
    avconv -i "$f" "$t"
    if ( ! test -s "${t}" ) && ( test -e "$t" ); then
	rm "$t"
    fi
done