#!/bin/sh
frame_to_video () {
    local VIDEO_SRC="$1"
    local VIDEO_DEST="$2"
    local VIDEO_FPS="$3"
    #
    local MPEG_TO_ENC_N
    #
    # Select NTSC or PAL for "mpeg2enc"
    #
    if   [ "$VIDEO_FPS" = "25" ]
    then
        MPEG_TO_ENC_N="p"
    else
        MPEG_TO_ENC_N="n"
    fi    
    #
    # Reassemble frames.
    #
    png2yuv -f $VIDEO_FPS -I p -L 0 -j $VIDEO_SRC.%06d.png | \
            mpeg2enc -n $MPEG_TO_ENC_N -f 3 -b 500 -q 10 -o $VIDEO_DEST
}