dem2vid bash script

#!/bin/bash

#Script to capture demo, calculate bitrate, scale & encode to aac/avc
#uses ffmpeg presets within ~/.ffmpeg (-vpre fast/-vpre vhq)
#examples: http://svn.mplayerhq.hu/ffmpeg/trunk/ffpresets
#depends: mplayer, faac,  ffmpeg & x264 (>20081002 recommended)
#use: ./dem2vid yourDemo.dem requiredWidth requiredSizeInMB

DEM="$1"
WID="$2"
MB="$3"

dumpDemo() {
LOC=`locate nexuiz-linux-glx.sh`   
${LOC} -demo +cl_capturevideo 1 +playdemo demos/${DEM}
VID=`find ~/.nexuiz/data/video/ -iname "dpvideo*.avi" -print | tail -1`
echo ${LOC} ${VID}
}

info() {
mplayer -identify -frames 0 ${VID} 2>/dev/null > /tmp/$$
RESX=`grep ID_VIDEO_WIDTH /tmp/$$ | cut -d"=" -f2`
RESY=`grep ID_VIDEO_HEIGHT /tmp/$$ | cut -d"=" -f2`
LENGTH=`grep ID_LENGTH /tmp/$$ | cut -d"=" -f2`
rm /tmp/$$ && echo ${RESX} ${RESY} ${LENGTH}
}

height() {
ASPECT=$(echo "scale=3; ${RESX} / ${RESY}" | bc)
HEIGHT=$(echo "${WID} / ${ASPECT}" | bc)
MOD16=$(( ${HEIGHT} / 16 * 16 ))
echo ${MOD16}
}

audioSize() {
ffmpeg -i ${VID} -vn -acodec libfaac -ac 2 -aq 100 -async 2 aud.m4a
STAT=$(stat aud.m4a | grep Size | awk '{print $2}')
SIZE=$( echo "scale=6; ${STAT} / 1024" | bc)
echo ${SIZE}
}

bitrate() {
RATE=$(echo "(( "$MB" * 1024 ) / ${LENGTH}) - ( ${SIZE} / ${LENGTH})" | bc)
R8=$(echo "(( ${RATE} * 8 ) * 1.02)" | bc)
KBPS=`echo "tmp=${R8}; tmp /= 1; tmp" | bc`
echo ${KBPS}
}

encode() {
ffmpeg -i ${VID} -an -pass 1 -s ${WID}x${MOD16} -vcodec libx264 -vpre fast \
-b ${KBPS}k -threads 0 -rc_eq 'blurCplx^(1-qComp)' -level 41 "$DEM.mp4"
ffmpeg -i ${VID} -acodec libfaac -ac 2 -aq 100 -async 2 -pass 2 \
-s ${WID}x${MOD16} -vcodec libx264 -vpre vhq -b ${KBPS}k -threads 0 \
-rc_eq 'blurCplx^(1-qComp)' -level 41 -psnr -y "$DEM.mp4"
}

dumpDemo;
info;
height;
audioSize;
bitrate;
encode;
rm ${VID} aud.m4a *2pass*.log && echo Finished!

bind MWHEELUP "fov 25 ; sensitivity 8"
bind MWHEELDOWN "fov 100 ; sensitivity 32"

bind KP_END "toggle crosshair_color_red 0 0.14 0.29 0.43 0.57 0.71 0.86 1; echo RGB $crosshair_color_red $crosshair_color_green $crosshair_color_blue"
bind KP_DOWNARROW "toggle crosshair_color_green 0 0.14 0.29 0.43 0.57 0.71 0.86 1; echo RGB $crosshair_color_red $crosshair_color_green $crosshair_color_blue"
bind KP_PGDN "toggle crosshair_color_blue 0 0.14 0.29 0.43 0.57 0.71 0.86 1; echo RGB $crosshair_color_red $crosshair_color_green $crosshair_color_blue"

#!/bin/sh

#Script to capture demo, calculate bitrate, scale & encode to mp4
#uses ffmpeg presets within ~/.ffmpeg (-vpre fast/-vpre vhq)
#examples: http://svn.mplayerhq.hu/ffmpeg/trunk/ffpresets
#depends: faac, ffmpeg & x264 (>20081002 recommended)
#use: ./dem2vid yourDemo.dem requiredWidth requiredSizeInMB

DEM="$1"
WID="$2"
MB="$3"
DEST="${1%.*}.mp4"

capture() {
LOC=`locate nexuiz-linux-sdl.sh | tail -1`   
${LOC} -demo +cl_capturevideo 1 +cl_capturevideo_ogg 0 \
+cl_capturevideo_fps 24 +playdemo demos/${DEM}
VID=`find ~/.nexuiz/data/video/ -iname "dpvideo*.avi" -print | tail -1`
echo "Demo captured to ${VID}"
}

info() {   
ffmpeg -i ${VID} 2> /tmp/$$
TH=`grep Duration /tmp/$$ | cut -d":" -f2 | cut -c 2-3`
TM=`grep Duration /tmp/$$ | cut -d":" -f3`
TS=`grep Duration /tmp/$$ | cut -d":" -f4 | cut -c 1-5`
SEC=$(echo "( ${TH} * 3600 ) + ( ${TM} * 60 ) + ${TS}" | bc)
RESX=`grep Video: /tmp/$$ | grep -o ....x | tr -d 'x '`
RESY=`grep Video: /tmp/$$ | grep -o x.... | tr -d 'x,'`
rm /tmp/$$ && echo ${RESX} ${RESY} ${SEC}
}

height() {
ASPECT=$(echo "scale=3; ${RESX} / ${RESY}" | bc)
HEIGHT=$(echo "${WID} / ${ASPECT}" | bc)
MOD16=$(( ${HEIGHT} / 16 * 16 ))
echo ${MOD16}
}

bitrate() {
RATE=$(echo "(( "$MB" * 1024 ) / ${SEC}) - 16" | bc)
R8=$(echo "(( ${RATE} * 8 ) * 1.02)" | bc)
KBPS=`echo "tmp=${R8}; tmp /= 1; tmp" | bc`
echo ${KBPS}
}

encode() {
ffmpeg -i ${VID} -pass 1 -s ${WID}x${MOD16} -vcodec libx264 -vpre fast \
-b ${KBPS}k -threads 0 -rc_eq 'blurCplx^(1-qComp)' -level 41 -an "$DEST"
ffmpeg -i ${VID} -acodec libfaac -ac 2 -ab 128k -async 2 -pass 2 \
-s ${WID}x${MOD16} -vcodec libx264 -vpre vhq -b ${KBPS}k -threads 0 \
-rc_eq 'blurCplx^(1-qComp)' -level 41 -psnr -y "$DEST"
}

vbr() {
ffmpeg -i ${VID} -acodec libfaac -ac 2 -aq 100 -async 2 \
-s ${WID}x${MOD16} -vcodec libx264 -vpre vhq -crf 20 -threads 0 \
-rc_eq 'blurCplx^(1-qComp)' -level 41 -psnr "$DEST"
}

capture;
info;
height;
if [ -n "$3" ];
then
   bitrate;
   encode;
   rm *2pass*.log
else
   vbr;
fi
rm ${VID} && echo "Finished! Saved as ${DEST}"

coder=1
flags=+loop
cmp=+chroma
partitions=-parti8x8-parti4x4-partp8x8-partp4x4-partb8x8
me_method=dia
subq=1
me_range=16
g=480
keyint_min=24
sc_threshold=40
i_qfactor=0.71
b_strategy=2
qcomp=0.6
qmin=10
qmax=51
qdiff=4
bf=3
refs=1
directpred=1
trellis=0
flags2=-bpyramid-wpred-mixed_refs-dct8x8+fastpskip

coder=1
flags=+loop
cmp=+chroma
partitions=+parti8x8+parti4x4+partp8x8+partp4x4+partb8x8
me_method=umh
subq=9
me_range=32
g=480
keyint_min=24
sc_threshold=40
i_qfactor=0.71
b_strategy=2
qcomp=0.6
qmin=10
qmax=51
qdiff=4
bf=3
refs=6
directpred=3
trellis=2
flags2=+bpyramid+wpred+mixed_refs+dct8x8-fastpskip

#!/bin/sh

#simple script to encode a Nexuiz demo using the internal encoder
#use: ./dem2ogv yourDemo.dem hq/hd

DEM="$1"
CFG=~/.nexuiz/data/config.cfg

if [ "$2" == "hq" ]; then
   RESX="768"
elif [ "$2" == "hd" ]; then
   RESX="1280"
fi
echo ${RESX}

aspect() {
WIDTH=`grep vid_width $CFG | cut -d " " -f2 | tr -d '"'`
HEIGHT=`grep vid_height $CFG | cut -d " " -f2 | tr -d '"'`
ASPECT=$(echo "scale=3; ${WIDTH} / ${HEIGHT}" | bc)
echo ${WIDTH} ${HEIGHT} ${ASPECT}
}

height() {
RESY=$(echo "${RESX} / ${ASPECT}" | bc)
echo ${RESY}
}

capture() {
LOC=`locate nexuiz-linux-sdl.sh | tail -1`   
${LOC} -demo +cl_capturevideo_width ${RESX} +cl_capturevideo_height ${RESY} \
+cl_capturevideo 1 +cl_capturevideo_ogg 1 +playdemo demos/${DEM}
}

aspect;
height;
capture;
echo "Finished! Your video is saved under ~/.nexuiz/data/video/"