Mencoder Video Converter Info

transcoding from one lossy codec to another results automatically in a loss of quality. Also you have to be more precise what you understand of "bad sound".

hello.
I'm french and have difficulties to translate and describe exactly what the sound is,so...
-no music, no conversation can be heard
-only constant and insufferable noise.
thanks

I've written a bash script to automate the conversion progress.

You can use it for just converting movies to a compatible format, ore use it for autocropping 16:9 movies to the m6 display format 4:3.

It also automatically detects those black bars at the top and the bottom of some movies faking a 4:3 resolution and crops to *real* 16:9

Code:

#!/bin/bash
#
# bash script for converting videos to a meizu-m6 compatible format
# autodetecting and -removing those black fagbars faking a 4:3 resolution
# autocropping 16:9 to 4:3 
# 
# (c) 2008 by antisystem@jabber.org

echo
echo "Do you want to crop the video to 4:3?  [y/n]"
echo "Standard is No"
echo
read crop


if [ "$crop" = "y" ]; then
	mplayer "$1" -vf cropdetect -frames 5 -ss 600 -vo null -ao null >/home/$USER/.meizucrop
	cropres=`cat /home/$USER/.meizucrop | grep crop | tail -n 1 | cut -d "(" -f 2 | cut -d ")" -f 1`
#	mplayer "$1" $cropres,scale=-2:240,crop=320:240 
	mencoder "$1" -idx -noodml -ofps 20 $cropres,scale=-2:240,expand=320::::1,crop=320:240,rotate=1 -ovc lavc -ffourcc XVID -lavcopts vcodec=mpeg4:vbitrate=384:vmax_b_frames=0:vhq -sws 9 -srate 44100 -oac mp3lame -lameopts cbr:br=128:mode=0 -o "$2"
else
#	mplayer "$1" -vf scale=320:-2,expand=:240:::1,crop=320:240
	mencoder "$1" -idx -noodml -ofps 20 -vf scale=320:-2,expand=:240:::1,crop=320:240,rotate=1 -ovc lavc -ffourcc XVID -lavcopts vcodec=mpeg4:vbitrate=384:vmax_b_frames=0:vhq -sws 9 -srate 44100 -oac mp3lame -lameopts cbr:br=128:mode=0 -o "$2"
fi

exit 0

working fine for me - if you have problems or questions, feel free to send me a mail.

I wonder why u linux guys invent the wheel each day again ? There are a couple of linux scripts now in this forum, but you don't want to work together and use the synergy.

Originally Posted by BobbyQ

I wonder why u linux guys invent the wheel each day again ? There are a couple of linux scripts now in this forum, but you don't want to work together and use the synergy.

Because it is fun :-)

This is a nice script I've been using from some time now. I downloaded from an old thread and improved a bit. Crops, let you do double pass and load subtitles when available.

Code:

#!/bin/bash
#
#       Redistribution and use in source and binary forms, with or without
#       modification, are permitted provided that the following conditions are
#       met:
#       
#       * Redistributions of source code must retain the above copyright
#         notice, this list of conditions and the following disclaimer.
#       * Redistributions in binary form must reproduce the above
#         copyright notice, this list of conditions and the following disclaimer
#         in the documentation and/or other materials provided with the
#         distribution.
#       * Neither the name of the  nor the names of its
#         contributors may be used to endorse or promote products derived from
#         this software without specific prior written permission.
#       
#       THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
#       "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
#       LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
#       A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
#       OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
#       SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
#       LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
#       DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
#       THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
#       (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
#       OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#
#       Copyleft 2007, 2008 wishmechaos and dudus
#
#        Version 0.1, 21-oct-07
#        Version 0.2, 22-oct-07, Added ratio autodetect (requires ffmpeg),
#            small subtitle fix.
#             routine from http://tuxicity.wordpress.com/2006/12/01/avi-to-dvd-with-ffmpeg-and-dvdauthor/
#        Version 0.2.1, 12-feb-08, Fixed small bug when filename has spaces.
#        Version 0.3, 1-mar-08, Tuned mencoder parameters.
#        Version 0.4, 20-mar-08, fixed double pass and subtitles loading

# For debugging purposes
# set -x

### Defaults
# Frames per second (15-20)
fps=20

# Two pass encoding, takes longer, better quality
# yes / no
twopass=no

# Crop settings.
# "auto" will try to detect if the source video is 4:3 or 16:9
#  and leave that intact.
# "yes" will leave 4:3 videos as they are, and will crop 16:9
#  videos in order to take up all of the screen.
crop="auto"

# Video bitrate
vbitrate=350
# Audio bitrate
abitrate=112
# Sample rate
srate=44100
# Maximum Bitrate allowed
vrc_maxrate=460
# Buffer size
vrc_buf_size=1835
### End defaults

# Some common options
common="-idx -noodml -force-avi-aspect 1.3333 -msglevel mencoder=1 -ofps $fps -ovc lavc -ffourcc XVID"

show_help() {
    echo "Usage: `basename "$0"` [-h(elp)] [-c(rop) auto yes] [-p (two-pass)] [-f(ps) number]
    [-v(ideo bitrate) number] [-a(udio bitrate) number] file1.avi [file2.avi...]
    Subtitles are automatically loaded if their filename is the same as the movie file"
    exit 1
}

# find subtitles with same filename
findsubs() {
    for possiblefile in "$filename"*; do
        case $possiblefile in
            *.sub) subfile="$possiblefile";;
            *.srt) subfile="$possiblefile";;
        esac
    done
    if test -n "$subfile"; then #if [[ "$subfile" != "" ]]; then
        echo "Found $subfile."
        subs=(-noautoexpand -subpos 95 -subfont-autoscale 3 -subfont-outline 1 -subcp enca -sub "$subfile")
    fi
}

aspectdetect() {
    aspect=$(( $(ffmpeg -i "$moviefile" 2>&1 | grep "Stream\ #0.0" | sed "s/.* \([1-9][0-9]*\)x\([0-9]*\).*/\10000 \/ \2/") ))
    
    if [[ $aspect -lt 15555 ]]; then
        # 4:3
        echo "$moviefile appears to be 4:3"
        vf="scale=-2:240,crop=320:240,expand=320:240:::1"
    else
        # 16:9
        echo "$moviefile appears to be Widescreen"
        vf="scale=320:-2,crop=320:240,expand=320:240:::1"
    fi
}

convert() {
    case $crop in
        auto) aspectdetect;;
        yes) vf="scale=-2:240,crop=320:240,expand=320:240:::1"
    esac
    
    if [[ "$twopass" == "no" ]]; then
        mencoder "${subs[@]}" -vf softskip,$vf,rotate=1 "$moviefile" $common -lavcopts threads=8:vcodec=mpeg4:mbd=2:trell:vbitrate=$vbitrate:vrc_maxrate=$vrc_maxrate:vrc_buf_size=$vrc_buf_size:vmax_b_frames=0:vhq:acodec=libmp3lame:abitrate=$abitrate:keyint=100:sc_factor=5 -sws 9 -srate $srate -oac lavc -af volnorm,delay=230:230 -o "$filename.meizu.avi"
    else
        #pass 1
        mencoder -nosound -vf softskip,$vf,rotate=1 "$moviefile" $common -lavcopts threads=8:vcodec=mpeg4:vpass=1:vbitrate=$vbitrate:vrc_maxrate=$vrc_maxrate:vrc_buf_size=$vrc_buf_size:vmax_b_frames=0:vhq:turbo -sws 9 -o "$filename.meizu.avi"
        #pass 2
        mencoder "${subs[@]}" -vf softskip,$vf,rotate=1 "$moviefile" $common -lavcopts threads=8:vcodec=mpeg4:mbd=2:trell:vpass=2:vbitrate=$vbitrate:vrc_maxrate=$vrc_maxrate:vrc_buf_size=$vrc_buf_size:vmax_b_frames=0:vhq:acodec=libmp3lame:abitrate=$abitrate:keyint=100:sc_factor=5 -sws 9 -srate $srate -oac lavc -af volnorm,delay=230:230 -o "$filename.meizu.avi"
        rm divx2pass.log
    fi

    echo " Finished converting $moviefile"
}

cleanUp() {
    rm "$filename.meizu.avi"
    rm divx2pass.log
    exit 1
}
trap cleanUp INT

# If there're no arguments
if [ $# = 0 ]; then show_help; fi

# Parse arguments
x=1         # Avoids an error if we get no options at all.
while getopts "hc:pf:" opt; do
    case "$opt" in
        h|\?) show_help;;
        c) crop="$OPTARG";;
        p) twopass="yes";;
        f) fps="$OPTARG";;
        a) abitrate="$OPTARG";;
        v) vbitrate="$OPTARG";;
    esac
    x=$OPTIND
done
shift $((x-1))

for moviefile in "$@"; do
    if [[ -f "$moviefile" ]]; then
        echo "Moviefile is $moviefile"
        extension=".${moviefile##*.}"
        echo "Extension is $extension"
        filename="`basename "$moviefile" "$extension"`"
        echo "Filename is therefore "$filename""
        # ugly way to do it, works though.
        if [[ "$moviefile" != "${moviefile%/*}" ]]; then cd "${moviefile%/*}"; fi
        findsubs
        echo "Converting $moviefile"
        convert
    else
        echo ""$moviefile" doesn't exist."
    fi
done

Hello together. I`ve tested some of the scripts, but they dont work: The mencoder scripts and the script above rotate the video 90°.

So I read the manpage of mencoder and built this script:

Code:

mencoder movie.avi -vf scale=320:240 -oac copy -ovc xvid -o output.avi

This doesnt change the size of the file (~700 MB), but it resizes the video to 320x240px (Google says this is the screen resolution of my m6 sl). Yeah, it looks really bad... but the biggger problem is: It does not work: The player does not want to play this video.

Do you know why it does not work?

Best regards, Keba

PS: Yep, Im using Linux (Ubuntu 8.04)
PPS: Im sorry for my English, i hope, that you understand me.

//edit: Mabe i should say, that the player plays the standard-movie (meizu promotion).
Im using the firmware, which was with the player - dont know its name. I cant listen to the radio...