[MPlayer-users] Theora codec in mencoder

[Bernhard Rosenkraenzer]

On Fri, 23 May 2003, Lukasz Miller wrote:

Hi,

> Lately i builg my mplayer daily; i'm interested in this Theora codec.
> Is there a way to use it for encoding in mencoder?

While not mencoder, the attached script may help you - it converts 
anything mplayer can play to theora using the encoder_example from theora 
CVS.

Usage:

theora-encoder [-a x] [-A x] [-v x] [-V x] [-o x] [-aa x] [-va x] [-aspect 
x] file
	-a	Set audio quality (-1 [worst] to 10 [best])
	-A	Set audio bitrate (not recommended, use -a instead)
	-v	Set video quality (0 [worst] to 10 [best])
	-V	Set video bitrate (not recommended, use -v instead)
	-o	Set output filename
	-aa	Pass an argument to the audio decoder [mplayer] unchanged
	-va	Pass an argument to the video decoder [mplayer] unchanged
		(e.g. to use mplayer's deinterlacer:
		theora-encoder -o test.ogg -va -vop -va pp=lb test.avi
	-aspect	Set the aspect ratio of the input file (usually 
		autodetected)
	file	input file name

-- 
Ark Linux - Linux for the masses
http://www.arklinux.org/

Redistribution and processing of this message is subject to
http://www.arklinux.org/terms.php
-------------- next part --------------
#!/bin/sh
# Theora encoder -- encodes any video file playable by mplayer to Theora
# (c) 2003 Ark Linux, written by Bernhard Rosenkraenzer <bero at arklinux.org>
#
# Released under the GNU GPL v2 or if, and only if, the GPL v2 is ruled
# invalid in a court of law, any subsequent version of the GPL.
#
ARGS=""
AUDIO=""
VIDEO=""
while [ "`echo $1 |cut -b1`" = "-" ]; do
	case $1 in
	-a|--audio-quality)
		shift
		ARGS="$ARGS -a $1"
		;;
	-A|--audio-bitrate)
		shift
		ARGS="$ARGS -A $1"
		;;
	-v|--video-quality)
		shift
		ARGS="$ARGS -v $1"
		;;
	-V|--video-bitrate)
		shift
		ARGS="$ARGS -V $1"
		;;
	-o|--output)
		shift
		DEST="$1"
		if [ "`echo $DEST |cut -b1`" != "/" ]; then
			DEST="`pwd`/$DEST"
		fi
		DEST="\"$DEST\""
		ARGS="$ARGS -o $DEST"
		;;
	-aa|--audio-arg)
		# Pass an argument to the audio decoder
		shift
		AUDIO="$AUDIO \"$1\""
		;;
	-va|--video-arg)
		# Pass an argument to the video decoder
		shift
		VIDEO="$VIDEO \"$1\""
		;;
	-aspect)
		# Aspect ratio of input file
		shift
		VIDEO="$VIDEO -aspect \"$1\""
		;;
	*)
		echo "WARNING: Unknown option $1 ignored!" >&2
	esac
	shift
done
if [ -z "$1" -o "$#" != "1" ]; then
	cat >&2 <<EOF
Usage: $0 [-a audioquality|-A audiobitrate] [-v videoquality|-V videobitrate] [-o outputfile] inputfile
EOF
	exit 1
fi
SRC="$1"
if [ "`echo $SRC |cut -b1`" != "/" ]; then
	SRC="`pwd`/$SRC"
fi
SRC="\"$SRC\""
DIR=`mktemp -d /tmp/theoraXXXXXX`
cat >$DIR/run.sh <<EOF
trap "rm -rf $DIR" 0 1 2 3 4 6 8 9 11 13 15
cd $DIR
mkfifo -m 0600 stream.yuv stream.wav
mplayer -ao pcm -aofile stream.wav -vo null -vc null $AUDIO $SRC &>mplayer-audio.log &
mplayer -vo yuv4mpeg -ao null -nosound $VIDEO $SRC &>mplayer-video.log &
encoder_example $ARGS stream.wav stream.yuv
rm -rf $DIR
EOF
chmod +x $DIR/run.sh
exec $DIR/run.sh