From e931053c03bca16f286e95c2dc4815d2e5268948 Mon Sep 17 00:00:00 2001
From: Jonas Smedegaard <dr@jones.dk>
Date: Sun, 5 Oct 2014 00:19:41 +0200
Subject: Fix handle silent/silencing movies.

---
 localvideowebencode | 30 +++++++++++++++---------------
 1 file changed, 15 insertions(+), 15 deletions(-)

diff --git a/localvideowebencode b/localvideowebencode
index efdc405..c359f5a 100755
--- a/localvideowebencode
+++ b/localvideowebencode
@@ -403,7 +403,7 @@ elif [ -n "$silence" ]; then
 	fi
 fi
 [ -z "$silence" ] || channels=
-if [ -n "$stereo$mono$silence" ]; then
+if [ -n "$stereo$mono" ]; then
 	# melt cannot downmix with (stereo?) filters applied (bug#763911)
 	if [ -n "$audioprefilters$compress$loudness$limit$filters" ]; then
 		if [ -z "${webm:+$use_oggenc}${webm_vp9:+$use_opusenc}" ]; then
@@ -463,21 +463,21 @@ _melt_wav="f=wav $_melt_downmix vn=1 video_off=1"
 _avconv_wav_in="-f wav"
 _oggenc_wav_in=
 _opusenc_wav_in=
-_melt_ogg="f=ogg $_melt_video $_melt_theora $_melt_vorbis"
+_melt_ogg="f=ogg $_melt_video $_melt_theora ${silence:+an=1 audio_off=1}${channels:+$_melt_vorbis}"
 _avconv_ogg_in="-f ogg"
 _avconv_ogg_vorbis="-f ogg -vn $_avconv_vorbis"
 _avconv_ogg_opus="-f ogg -vn $_avconv_opus"
-_melt_webm="f=webm $_melt_video $_melt_vp8 $_melt_vorbis"
-_avconv_webm="-f webm $_avconv_video $_avconv_vp8 $_avconv_vorbis"
+_melt_webm="f=webm $_melt_video $_melt_vp8 ${silence:+an=1 audio_off=1}${channels:+$_melt_vorbis}"
+_avconv_webm="-f webm $_avconv_video $_avconv_vp8 ${silence:+-an}${channels:+ $_avconv_vorbis}"
 _avconv_webm_in="-f webm"
-_avconv_webm_keepvideo="-f webm $_avconv_video -c:v copy $_avconv_vorbis"
-_avconv_webm_keepvideo_opus="-f webm $_avconv_video -c:v copy $_avconv_opus"
-_melt_webm_vp9="f=webm $_melt_video $_melt_vp9 $_melt_opus"
-_avconv_webm_vp9="-f webm $_avconv_video $_avconv_vp9 $_avconv_opus"
-_melt_mp4="f=mp4 $_melt_video $_melt_h264 $_melt_aac"
+_avconv_webm_keepvideo="-f webm $_avconv_video -c:v copy ${silence:+-an}${channels:+$_avconv_vorbis}"
+_avconv_webm_keepvideo_opus="-f webm $_avconv_video -c:v copy ${silence:+-an}${channels:+$_avconv_opus}"
+_melt_webm_vp9="f=webm $_melt_video $_melt_vp9 ${silence:+an=1 audio_off=1}${channels:+$_melt_opus}"
+_avconv_webm_vp9="-f webm $_avconv_video $_avconv_vp9 ${silence:+-an}${channels:+$_avconv_opus}"
+_melt_mp4="f=mp4 $_melt_video $_melt_h264 ${silence:+an=1 audio_off=1}${channels:+$_melt_aac}"
 _melt_img="f=image2 $_melt_video"
 
-[ -z "$loudness" ] || [ -n "$_melt_loudness" ] || do_loudness=yes
+[ -n "$silence" ] || [ -z "$loudness" ] || [ -n "$_melt_loudness" ] || do_loudness=yes
 if [ -n "$multipass" ] && [ -n "$webm$vp9" ]; then
 	echo "Analyzing video complexity${do_loudness:+ and audio dynamics}..."
 	if [ -n "$use_vpxenc" ]; then
@@ -514,7 +514,7 @@ if [ -n "$multipass" ] && [ -n "$webm$vp9" ]; then
 fi
 
 if [ -n "$use_oggenc$use_opusenc$use_vpxenc" ] && [ -n "$webm$vp9" ]; then
-	echo "Encoding raw video and extracting audio..."
+	echo "Encoding video${channels:+ and extracting audio...}"
 	$melt ${_melt_sample:-$infiles} \
 		${channels:+$audioprefilters \
 			${_melt_loudness:+-filter loudness program=$lufs \
@@ -528,12 +528,12 @@ if [ -n "$use_oggenc$use_opusenc$use_vpxenc" ] && [ -n "$webm$vp9" ]; then
 		${webm:+"$vpxenc_chained - $_vpxenc_vp8 \
 			${singlepass:+-p 1} \
 			${multipass:+-p 2 --pass=2 --fpf=${stem}_vp8.log} \
-			-o ${stem}_silent.webm"} \
+			-o ${stem}${channels:+_silent}.webm"} \
 		${vp9:+"$vpxenc_chained - $_vpxenc_vp9 \
 			${singlepass:+-p 1} \
 			${multipass:+-p 2 --pass=2 --fpf=${stem}_vp9.log} \
-			-o ${stem}_vp9_silent.webm"}
-	if [ -n "$webm" ]; then
+			-o ${stem}_vp9${channels:+_silent}.webm"}
+	if [ -n "$webm" ] && [ -n "$channels" ]; then
 		echo "Encoding Vorbis audio and muxing with VP8 video..."
 		if [ -n "$use_oggenc" ]; then
 			$oggenc $_oggenc_wav_in $_oggenc_vorbis -o - $stem.wav \
@@ -547,7 +547,7 @@ if [ -n "$use_oggenc$use_opusenc$use_vpxenc" ] && [ -n "$webm$vp9" ]; then
 				$_avconv_webm_keepvideo ${stem}.webm
 		fi
 	fi
-	if [ -n "$vp9" ]; then
+	if [ -n "$vp9" ] && [ -n "$channels" ]; then
 		echo "Encoding Opus audio and muxing with WebM/VP9 video..."
 		if [ -n "$use_opusenc" ]; then
 			$opusenc $_opusenc_wav_in $_opusenc_opus -o - $stem.wav \
-- 
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