AVI To DVD

slakka · 10-28-2008, 12:31 AM

So I wanted to write a one click script for converting an AVI file to DVD. The script uses mplayer and dvdauthor. Any input would be appreciated. Yes, I already know I am an amateur script writer, this is only my second attempt.

Code:

var_file_count=$(ls | grep ".avi" -c -i)
var_file_input=$(ls | grep ".avi" -i)
if [ $var_file_count == 0 ]; then
echo "No AVI files found in current directory. Please run script file from directory containg AVI files."
exit 0
elif [ $var_file_count -ge 2 ]; then
echo "More than one AVI file exists in this directory. Please place each AVI in it's own directory."
exit 0
else
var_file_width=$(exiftool -s -ImageWidth -s -s "$var_file_input")
var_file_height=$(exiftool -s -ImageHeight -s -s "$var_file_input")
var_aspect=`echo "scale=2 ; $var_file_width / $var_file_height" | bc`
var_aspect_test=`echo "sale=2 ; $var_aspect / 1.55" | bc`
if [ $var_aspect_test -gt 0 ]; then
var_aspect_input="16/9"
else
var_aspect_input="4/3"
fi
echo "File being proccessed:" $var_file_input
(mencoder -oac lavc -ovc lavc -of mpeg -mpegopts format=dvd -vf scale=720:480,harddup \
-srate 48000 -af lavcresample=48000 \
-lavcopts vcodec=mpeg2video:vrc_buf_size=1835:vrc_maxrate=9800:vbitrate=5000:keyint=18:aspect="$var_aspect_input":\
acodec=ac3:abitrate=192 -ofps 30000/1001 -o output.mpg "$var_file_input")
(dvdauthor -o dvd -x dvd.xml)
echo "Encoding and authoring completed. Please burn conetents of $PWD/dvd/VIDEO_TS to disc."
fi
exit 0

H_TeXMeX_H · 10-28-2008, 02:26 AM

Well, I would recommend you add some spaces and comments to the script that way you know better what is going on. Have you tested it, does it work. If it does, then great. If not, say so and we'll help debug it.

slakka · 10-28-2008, 09:33 PM

Forgot to mention it, but yes it works. The only part that I don't like is that dvdauthor requires a tie into an xml file for the chaptering of the dvd. This is the xml file structure I am using:

Code:

<dvdauthor>
	<vmgm />
	<titleset>
		<titles>
			<pgc>
				<vob file="output.mpg" chapters="0,10:00,20:00,30:00,40:00,50:00,60:00,70:00,80:00,90:00,100:00,110:00,120:00" />
			</pgc>
		</titles>
	</titleset>
</dvdauthor>

Is there anyway to pass this info to dvdauthor using straight command line?

pintubigfoot · 11-02-2008, 01:58 AM

Instead of using script, why not use avidemux?
http://avidemux.sourceforge.net/

H_TeXMeX_H · 11-02-2008, 02:22 AM

Well for one a script is more readily automated so you can do batches of DVDs.

Shadow_7 · 11-05-2008, 07:06 AM

Is this just for personal use DVDs? Your dvdauthor setup is very limited, which probably wont play well with some stand alone players. Also, any reason why you're using mencoder? ffmpeg gives a better picture quality / maintains the quality of the source better. Mencoder IMO ends up looking a bit YouTube-ish no matter what options I give it.

Here's my little script for a dvd I recently authored. Which is called by another script passing the parameters for every video. flv, avi, mov, and various other input formats.

I'm my case I was standardizing audio as well. To include a second audio track in supposed 5.1 surround sound (not that I currently have any means to test it). And no delay for the rear channels, so probably pretty lame sounding if I could test it. Sources were either stereo or mono. And I left out a lot of the beta / commented lines. And not quite what I'm wanting yet. When authored it has the none audio, mpeg1 audio (stereo), and ac3 audio (surround) options in ogle. Previously before editing the audio and mplex-ing, it didn't have the none option, but it still defaults to the stereo setup on most players (ogle / xine / mplayer / kaffeine / vlc / ???). And I'm using MP2 for stereo audio to a) make it look different from the ac3 surround sound and to b) overcome mplex's dislike of WAV input. Perhaps it'll take wav input, but I wasn't able to find the parameters needed to make that happen.

$ sh below_script INPUT.AVI DVD_QUALITY.mpeg work_file_prefix

#!/bin/sh

if [ ! $1 ] || [ ! $2 ] || [ ! $3 ]; then
echo "ERROR ##########!!!!!!!!!!@@@@@@@@@@!!!!!!!!!!########## ERROR"
exit 1
fi

SRCFILE=$1
DVDFILE=$2
WORKPRE=$3

VIDFILE=$WORKPRE"_work_video_only.mpg"
M2VFILE=$WORKPRE"_work_video_only.m2v"
WAVFILE=$WORKPRE"_work_audio_only.wav"
CH2FILE=$WORKPRE"_work_audio_stereo.wav"
MP2FILE=$WORKPRE"_work_audio_stereo.mp2"
LEFTFILE=$WORKPRE"_work_audio_left.wav"
RIGHTFILE=$WORKPRE"_work_audio_right.wav"
CENTERFILE=$WORKPRE"_work_audio_center.wav"
LFEFILE=$WORKPRE"_work_audio_lfe.wav"
SURROUNDFILE=$WORKPRE"_work_audio_surround.ac3"

#EXTRACT VIDEO ONLY
ffmpeg -i $SRCFILE -an -sameq -aspect 4:3 -minrate 0 -maxrate 7000 -bufsize 1792 \
-target ntsc-dvd -y $VIDFILE

#CONVERT VIDEO to MPLEX friendly format
ffmpeg -i $VIDFILE -an -sameq -f mpeg2video -vcodec copy -y $M2VFILE

#EXTRACT AUDIO ONLY
ffmpeg -i $SRCFILE -vn -sameq -acodec pcm_s16le -ar 48000 -y $WAVFILE

#CONVERT AUDIO to STEREO and NORMALIZE
# (needed because some inputs were mono)
sox $WAVFILE -r 48000 -c 2 $CH2FILE
normalize-audio $CH2FILE

#CONVERT AUDIO to 5.1 SURROUND
sox $CH2FILE -r 48000 -c 1 $LEFTFILE avg -l
sox $CH2FILE -r 48000 -c 1 $RIGHTFILE avg -r
soxmix $LEFTFILE $RIGHTFILE -r 48000 -c 1 $CENTERFILE
sox -v 0.5 $CENTERFILE $LFEFILE lowp 150
aften -m 0 -b 448 -dsur 2 -acmod 7 \
-ch_fl $LEFTFILE -ch_fc $CENTERFILE -ch_fr $RIGHTFILE \
-ch_sl $LEFTFILE -ch_lfe $LFEFILE -ch_sr $RIGHTFILE \
$SURROUNDFILE

#CONVERT AUDIO to MPLEX friendly format
ffmpeg -i $CH2FILE -sameq -ac 2 -ar 48000 -ab 384k -y $MP2FILE

#MAKE the DVD track with TWO audio tracks
mplex -f 8 -o $DVDFILE $M2VFILE $MP2FILE $SURROUNDFILE