#!/bin/sh
# Copyright © 2012-2014 Jonas Smedegaard <dr@jones.dk>
# Description: post-process fast-recorded multitrack video
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3, or (at your option)
# any later version.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
# General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.
#
# Depends: libav-tools
#
# TODO: add --help option
# TODO: make codecs, rates etc. configurable
# TODO: include SMTPE channel
# TODO: Check and ask if outfile already exist
# TODO: Add --force option to skip asking for overwriting

set -e

input="${1:-dump.nut}"
output="${2:-dump.mkv}"

#vcodec=huffyuv # more common
#vcodec=ffvhuff # more compact, supports YV12 colorspace
vcodec=ffv1 # most compact, supports RGBA colorspace, too CPU-hungry

acodec=pcm_s16le

#vf="${vf:+$vf }-vf setpts=(RTCTIME-RTCSTART)/(TB*1000000)" # current time
vf="${vf:+$vf }-vf hqdn3d" # high-quality denoise (good for webcams)
#font='/usr/share/fonts/truetype/droid/DroidSans.ttf'
#vf="${vf:+$vf }-vf "drawtext=fontfile=$font: timecode='09\:57\:00\:00': r=25: x=(w-tw)/2: y=h-(2*lh): fontcolor=white: box=1: boxcolor=0x00000000@1"}"
#vf="${vf:+$vf }-vf "drawtext=fontfile=DroidSans.ttf:'timecode=09\:57\:00\:00':r=25:x=\(w-tw\)/2:y=h-\(2*lh\):fontcolor=white:box=1:boxcolor=0x00000000@1"}"

inargs="-i file:$input"
maps="-map 0"
voutargs="-c:v $vcodec $vf ${outrate:+-r $outrate}"
aoutargs="-c:a $acodec"

echo avconv -threads auto $inargs $maps $voutargs $aoutargs -y "$output"
exec avconv -threads auto $inargs $maps $voutargs $aoutargs -y "$output"