#!/bin/bash -e

in="$1"; shift
out="$1"; shift
smallside="${1:-720}"; shift || true

if ! [ -r "$in" ]; then
    echo "error: can't read '$in'" >&2
    exit 1
fi

if [ -z "$out" ]; then
    echo "error: output file name can't be empty" >&2
    exit 1
fi

set -x
#ffmpeg -i "$in" -r 24 -vcodec libx265 -vf "scale=-2:$smallside,setpts=0.5*PTS" "$@" "$out"
ffmpeg -i "$in" -r 24 -vcodec libx265 -vf "scale=-2:$smallside" "$@" "$out"