From 7ad108b6999ba5728be79cf094e9cb4f2441c9b3 Mon Sep 17 00:00:00 2001
From: Jonas Smedegaard <dr@jones.dk>
Date: Sat, 6 Feb 2021 18:44:26 +0100
Subject: use melt for GPU-accelerated and dual-pass encoding

---
 localvideowebencode | 45 +++++++++++++++++++++++++++++----------------
 1 file changed, 29 insertions(+), 16 deletions(-)

diff --git a/localvideowebencode b/localvideowebencode
index f3332d7..89b6a01 100755
--- a/localvideowebencode
+++ b/localvideowebencode
@@ -568,11 +568,7 @@ for vformat in vp8 vp9 h264; do
 	[ -z "$q" ] || eval "q_$vformat=$q"
 	eval "[ -n \"\$q_$vformat\" ] || no_q_$vformat=yes"
 	[ -z "$gpu" ] || eval "[ -n \"\$no_gpu_encoder_$vformat\" ] || encoder_$vformat=${vformat}_$gpu"
-
-	# melt supports dual-pass only for h.264
-	[ h264 = "$vformat" ] || [ -n "$use_vpxenc" ] || eval "[ -z \"$multipass\" ] || use_ffmpeg_$vformat=yes"
-	# melt (before v6.26) does not support encode-only hardware acceleration
-	[ h264 = "$vformat" ] || [ -n "$use_vpxenc$gpu_vaapi" ] || eval "[ -z \"$multipass\" ] || use_ffmpeg_$vformat=yes"
+	[ h264 = "$vformat" ] || eval "[ -n \"$use_vpxenc\$use_ffmpeg_$vformat\" ] || use_melt_$vformat=yes"
 done
 if [ -n "$use_ffmpeg_vp8$use_ffmpeg_vp9$use_vpxenc" ]; then
 	[ -n "$use_oggenc" ] || use_ffmpeg_ogg=yes
@@ -699,9 +695,9 @@ if [ -n "$loudness" ] && [ -z "$silence$_melt_loudness" ]; then
 	echo >&2 "Loudness data: $_melt_loudness"
 fi
 
-if [ -n "$multipass" ] && [ -n "${webm:+$use_vpxenc$use_ffmpeg_vp8$use_oggenc}${vp9:+$use_vpxenc$use_ffmpeg_vp9$use_opusenc}${mp4:+$use_ffmpeg_h264}" ]; then
-	echo >&2 "Analyzing video complexity..."
-	if [ -n "$use_vpxenc" ]; then
+if [ -n "$multipass" ]; then
+	if [ -n "${webm:+$use_vpxenc}${vp9:+$use_vpxenc}" ]; then
+		echo >&2 "Analyzing video complexity, as discrete processes..."
 		$melt $_melt_infiles $filters $_melt_stdout \
 			| pee \
 			${webm:+"$vpxenc_chained - $_vpxenc_vp8 \
@@ -710,15 +706,31 @@ if [ -n "$multipass" ] && [ -n "${webm:+$use_vpxenc$use_ffmpeg_vp8$use_oggenc}${
 			-p 2 --pass=1 --fpf=${stem}_vp9.log -o /dev/null"} \
 			${mp4:+${use_ffmpeg_h264:+$_ffmpeg_rawvideo $_ffmpeg_h264 -an \
 			-pass 1 -passlogfile ${stem}_h264 /dev/null}}
-	else
+	elif [ -n "${webm:+$use_ffmpeg_vp8}${vp9:+$use_ffmpeg_vp9}${mp4:+$use_ffmpeg_h264}" ]; then
+		echo >&2 "Analyzing video complexity, integrated with ffmpeg"
 		$melt $_melt_infiles $filters $_melt_stdout \
+			${webm:+${use_melt_vp8:+-consumer avformat:$stem.webm $_melt_webm \
+				pass=1 passlogfile=${stem}_vp8}} \
+			${vp9:+${use_melt_vp9:+-consumer avformat:${stem}_vp9.webm $_melt_webm_vp9 \
+				pass=1 passlogfile=${stem}_vp9}} \
+			${mp4:+${use_melt_h264:+-consumer avformat:$stem.mp4 $_melt_mp4 \
+				pass=1 passlogfile=${stem}_vp8}} \
 			| $ffmpeg_chained $_ffmpeg_stdin \
-			${webm:+$_ffmpeg_rawvideo $_ffmpeg_vp8 -an \
-			-pass 1 -passlogfile ${stem}_vp8 /dev/null} \
-			${vp9:+$_ffmpeg_rawvideo $_ffmpeg_vp9 -an \
-			-pass 1 -passlogfile ${stem}_vp9 /dev/null} \
-			${mp4:+${use_ffmpeg_h264:+$_ffmpeg_rawvideo $_ffmpeg_h264 -an \
-			-pass 1 -passlogfile ${stem}_h264 /dev/null}}
+			${webm:+${use_ffmpeg_vp8:+$_ffmpeg_rawvideo $_ffmpeg_vp8 -an \
+			-pass 1 -passlogfile ${stem}_vp8 /dev/null}} \
+			${vp9:+${use_ffmpeg_vp9:+$_ffmpeg_rawvideo $_ffmpeg_vp9 -an \
+			-pass 1 -passlogfile ${stem}_vp9 /dev/null}} \
+			${mp4:+${use_ffmpeg_h264:+${use_ffmpeg_h264:+$_ffmpeg_rawvideo $_ffmpeg_h264 -an \
+			-pass 1 -passlogfile ${stem}_h264 /dev/null}}}
+	else
+		echo >&2 "Analyzing video complexity, at once..."
+		$melt $_melt_infiles $filters \
+			${webm:+${use_melt_vp8:+-consumer avformat:$stem.webm $_melt_webm \
+				pass=1 passlogfile=${stem}_vp8}} \
+			${vp9:+${use_melt_vp9:+-consumer avformat:${stem}_vp9.webm $_melt_webm_vp9 \
+				pass=1 passlogfile=${stem}_vp9}} \
+			${mp4:+${use_melt_h264:+-consumer avformat:$stem.mp4 $_melt_mp4 \
+				pass=1 passlogfile=${stem}_vp8}}
 	fi
 fi
 
@@ -810,7 +822,8 @@ else
 			${multipass:+pass=2 passlogfile=${stem}_vp8}} \
 		${vp9:+-consumer avformat:${stem}_vp9.webm $_melt_webm_vp9 \
 			${multipass:+pass=2 passlogfile=${stem}_vp9}} \
-		${mp4:+-consumer avformat:$stem.mp4 $_melt_mp4}
+		${mp4:+-consumer avformat:$stem.mp4 $_melt_mp4
+			${multipass:+pass=2 passlogfile=${stem}_vp8}}
 fi
 
 # cleanup encoding cruft
-- 
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