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#!/bin/bash
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if [ -z "$1" ]; then





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	echo "Usage: $0 <input video file> [output avi file]" >&2





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	exit 1





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fi





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in="$1"





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if [ ! -z "$2" ]; then





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	if [ -d "$2" ]; then





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		out="$2/${in%.*}.mp4"





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	else





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		out="$2"





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	fi





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else





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	out="${in%.*}.mp4"





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fi





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[ -z "$video2mobile_rm" ] && export video2mobile_rm="rm -i"





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OUT_WIDTH=176





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OUT_HEIGHT=144





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OUT_ASPECT="$(echo "scale=3; $OUT_WIDTH/$OUT_HEIGHT" | bc)"





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info="$(ffmpeg -i "$in" 2>&1)"





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width=$(echo "$info" | grep -m1 Video: | perl -pe 's/^.* (\d+)x(\d+)(,.*)?$/$1/')





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height=$(echo "$info" | grep -m1 Video: | perl -pe 's/^.* (\d+)x(\d+)(,.*)?$/$2/')





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aspect="$(echo "scale=3; $width/$height" | bc)"





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new_width=$OUT_WIDTH





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new_height=$OUT_HEIGHT





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padding_ap=""





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if expr "$aspect" '<' "$OUT_ASPECT" >/dev/null; then





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	# Black padding left and right





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	padding="$(echo "($OUT_WIDTH - $OUT_HEIGHT * $aspect)/2" | bc)"





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	padding_ap="-padleft $padding -padright $padding"





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	new_width=$[$new_width-$padding*2]





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elif expr "$aspect" '>' "$OUT_ASPECT" >/dev/null; then





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	# Black padding top and bottom





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	padding="$(echo "($OUT_HEIGHT - $OUT_WIDTH / $aspect)/2" | bc)"





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	padding_ap="-padtop $padding -padbottom $padding"





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	new_height=$[$new_height-$padding*2]





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fi





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ffmpeg -i "$in" -s "${new_width}x${new_height}" -r 15 -ab 64k -acodec aac -b 95k -vcodec mpeg4 -strict experimental -aspect "$OUT_ASPECT" $padding_ap "$out" #&& $video2mobile_rm "$in"