From 510109168cd94b6d73f0486e0904268ef9c667e2 Mon Sep 17 00:00:00 2001
From: Jonas Smedegaard <dr@jones.dk>
Date: Mon, 23 Jun 2014 17:34:04 +0200
Subject: Separate post-processing script.

---
 localvideodump        | 20 +++++++-------------
 localvideopostprocess | 49 +++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 56 insertions(+), 13 deletions(-)
 create mode 100755 localvideopostprocess

diff --git a/localvideodump b/localvideodump
index 49546fa..6a2e33c 100755
--- a/localvideodump
+++ b/localvideodump
@@ -1,5 +1,5 @@
 #!/bin/sh
-# Copyright © 2012, 2013 Jonas Smedegaard <dr@jones.dk>
+# Copyright © 2012-2014 Jonas Smedegaard <dr@jones.dk>
 # Description: record most possible video data using least CPU
 #
 # This program is free software; you can redistribute it and/or modify
@@ -28,9 +28,7 @@
 
 set -e
 
-#melt cam_Microsoft_LifeCam_Studio.mlt -consumer avformat:x.avi vcodec=ffv1 an=1
-
-output="${1:-dump.mkv}"
+output="${1:-dump.nut}"
 
 # resolve audio inputs: default PCM of all ALSA cards with input devices
 ainputs="$(arecord -l | perl -anE '/^card/ and say $F[2]')"
@@ -50,17 +48,13 @@ inrate=20
 #inrate=10
 outrate=$inrate # seems this ensures fixed rate when input is flaky
 
+vcodec=copy # uncompressed
 #vcodec=huffyuv # more common
-vcodec=ffvhuff # more compact, supports YV12 colorspace
+#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"}"
+acodec=copy
+#acodec=pcm_s16le
 
 parse_v4l2_formats() {
 	v4l2-ctl --list-formats-ext -d "$1" | perl -n \
@@ -112,7 +106,7 @@ FORMATS
 	vmaps="${vmaps:+$vmaps }-map $i:v:0"
 	i=$(expr $i + 1)
 done
-voutargs=${vinputs:+-c:v $vcodec $vf ${outrate:+-r $outrate}}
+voutargs=${vinputs:+-c:v $vcodec ${outrate:+-r $outrate}}
 aoutargs=${ainputs:+-c:a $acodec}
 
 echo avconv $ainargs $vinargs $vmaps $amaps $voutargs $aoutargs -y "$output"
diff --git a/localvideopostprocess b/localvideopostprocess
new file mode 100755
index 0000000..9a65425
--- /dev/null
+++ b/localvideopostprocess
@@ -0,0 +1,49 @@
+#!/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"
-- 
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