Convert video for HTC Desire

video4android.sh

#!/bin/sh
# Convert widescreen-clips to mp4 for android
# http://www.linux.org.ru/forum/mobile/5042707
# How to compile FFMPEG:
# https://ffmpeg.org/trac/ffmpeg/wiki/UbuntuCompilationGuide

INPUT="$1"

if [ ! -f "$INPUT" ] ; then
    echo File $INPUT not found
    exit 1
fi

WIDTH=800
HEIGHT=480

# For multiple sound tracks - specify the one to use
#AUDIO_CHANNEL="${2:-0.1}"
AUDIO_CHANNEL="0:1"
BITRATE="700k"

ffmpeg -i "$INPUT" 2>&1 | \
    awk -v fsw=${WIDTH} -v fsh=${HEIGHT} '/Video/{
	n=match ($0, "([0-9]+)x([0-9]+)", a);
	w=a[1]; h=a[2];
	sw=fsw; sh=1.0*sw*h/w;
	# if (sh == fsh) {
	# 	printf "# Exact scale\n";
	# } else if (sh < fsh) {
	# 	sh = int(sh / 4) * 4;
	# 	delta = fsh - sh;
	# 	p1 = int(delta / 8) * 4;
	# 	p2 = delta - p1;
	# 	printf "# Add horizontal bars: %d\n", fsh - sh;
	# 	printf "PADDING_OPTIONS=\"-padtop %s -padbottom %s\"\n", p1, p2;
	# } else {
	# 	sh=fsh; sw=1.0*sh*w/h;
	# 	sw = int(sw / 4) * 4;
	# 	delta = fsw - sw;
	# 	p1 = int(delta / 8) * 4;
	# 	p2 = delta - p1;
	# 	printf "# Add vertical bars %d\n", fsw - sw;
	# 	printf "PADDING_OPTIONS=\"-padleft %s -padright %s\"\n", p1, p2;
	# }
	printf "# %sx%s -> %s %s (%s %s)\n", w, h, fsw, fsh, sw, sh;
	printf "WIDTH_HEIGHT=%sx%s\n", sw, sh;
    }' > .params

cat .params
. ./.params

# Padding options depricated.

vp="-s $WIDTH_HEIGHT -vcodec libx264 -bt $BITRATE -maxrate 768k -bufsize 2M -rc_eq 'blurCplx^(1-qComp)' -qcomp 0.6 -qmin 10 -qmax 51 -qdiff 4 -level 13 -coder 0 -me_range 16 -g 250 -keyint_min 25 -sc_threshold 40 -i_qfactor 0.71 -flags +loop -cmp +chroma -b $BITRATE"
ap="-acodec libfaac -ac 2 -ar 48000 -ab 96k -map 0:0 -map $AUDIO_CHANNEL"

cp="-threads 0 $vp $ap"

rm -f "$INPUT".mp4

time ffmpeg -i "$INPUT" $cp -pass 1 \
   -partitions 0 -me_method epzs -subq 1 -trellis 0 -refs 1 \
   -f rawvideo -y /dev/null && \

time ffmpeg -i "$INPUT" $cp -pass 2 \
   -partitions +parti4x4+partp8x8+partb8x8 \
   -me_method umh -subq 5 \
   -trellis 1 -refs 5 \
   "$INPUT".mp4

# Clean up logfiles from multi-pass runs
rm ffmpeg2pass-0.log
rm ffmpeg2pass-0.log.mbtree
rm .params