#!/bin/bash

INFILE="$1"
OUTFILE="$2"

# make fifos
rm -f ppmyuv.fifo stream.fifo
mkfifo ppmyuv.fifo stream.fifo

# stream image to yuv420p
ppmtoy4m -n200  -I p -A 10:11 -S 420mpeg2 -r "$INFILE" >ppmyuv.fifo &

# play stream in mplayer with dr filter
mplayer ppmyuv.fifo  -vf pp=dr  -vo yuv4mpeg:file=stream.fifo &

# encode from stream.fifo with ffmpeg, outputting dvd mpeg
ffmpeg -f yuv4mpegpipe -i stream.fifo -nr 300  -vcodec mpeg2video \
-b 8000k -maxrate 9000k -bufsize 224KiB  -bf 2 -aspect 4:3 -r 29.970 \
-s 720x480  -y "${OUTFILE}.mpg"