[Kdenlive-devel] howto render ps3-compliant mp4's?

[sean darcy]

I've captured a bunch of old vhs tapes to dv. I want to edit them and 
render to mp4 with x264 and libfaac for streaming to a ps3. In kino I 
can do this calling an export script that is a modification of the 
standard dual-pass script:

  #!/bin/sh
# A Kino export script that outputs PlayStation 3 compatible Best 
Quality H.264 MP4 using ffmpeg with x264

usage()
{
	# Title
	echo "Title: H.264 MP4 Best Quality Dual Pass for PS3 (FFMPEG)"

	# Usable?
	aac=`ffmpeg -formats 2> /dev/null | egrep "(Encoders:)|(.*EA.*aac)" | 
grep aac | wc -l`
	h264=`ffmpeg -formats 2> /dev/null | egrep "(Encoders:)|(.*EV.*264)" | 
grep 264 | wc -l`
	[ "$aac" -gt 0 ] && [ "$h264" -gt 0 ] && echo Status: Active || echo 
Status: Inactive

	# Type
	echo Flags: double-pass best quality PS3 compatible file-producer

	# Profile - only Best Quality
	echo "Profile: Best Quality (native size, interlace, 2240 kb/s)"
}

execute()
{
	# Arguments
	normalisation="$1"
	length="$2"
	profile="$3"
	file="$4"
	project="$5"
	pass="$6"
	aspect="$7"

	. "`dirname $0`/ffmpeg_utils.sh"

	# generate filename if missing
	[ "x$file" = "x" ] && file="kino_export_"`date +%Y-%m-%d_%H.%M.%S`
	
	# Create metadata options
	title=`awk '/title="/ {split($0, x, "\""); z = 0; for (y in x) if (x[y] 
~ /title=/) z = y + 1; print x[z]; exit}' "$project"`
	author=`awk '/author="/ {split($0, x, "\""); z = 0; for (y in x) if 
(x[y] ~ /author=/) z = y + 1; print x[z]; exit}' "$project"`
	comment=`awk '/abstract="/ {split($0, x, "\""); z = 0; for (y in x) if 
(x[y] ~ /abstract=/) z = y + 1; print x[z]; exit}' "$project"`
	copyright=`awk '/copyright="/ {split($0, x, "\""); z = 0; for (y in x) 
if (x[y] ~ /copyright=/) z = y + 1; print x[z]; exit}' "$project"`
	
	# Run the command
	 case "$pass" in
		"1" ) ffmpeg -threads 0 -f dv -i pipe: -pass 1 -passlogfile "$file" \
	-vcodec $x264 -vpre fastfirstpass -level 41 -g 300  -flags +ildct+ilme 
-aspect $aspect -b 2048$kilo -bt 4096$kilo \
	-an -f rawvideo -y /dev/null
		;;		

              "2" ) ffmpeg -threads 0 -f dv -i pipe: -pass 2 
-passlogfile "$file" \
	-vcodec $x264 -vpre hq -level 41 -g 300  -flags +ildct+ilme -aspect 
$aspect -b 2048$kilo -bt 4096$kilo \
	-ab 448$audio_kilo -ar 48000 -title "$title" -author "$author" -comment 
"$comment" -copyright "$copyright" \
	-y "$file".mp4
               rm -f "$file-0.log"
               ;;

	esac
}
[ "$1" = "--usage" ] || [ -z "$1" ] && usage "$@" || execute "$@"

Now some of this script is kino specific, but the ffmpeg command lines 
are what I'd like for rendering from kdenlive: 2 pass , high quality , 
level 4.1 and interlaced ( I'll let the ps3 do deimterlacing, and keep 
the video the same as the dv ). I also prefer to use the presets, since 
someone else is then responsible for keeping the presets in sync with 
ffmpeg changes, at least in theory.

Is there a similar script in kdenlive I can modify to accomplish this?

sean