video encoding scripts

grap a frame

#! /bin/bash
#
# this doesn't get ALL frames, it just grabs one!
#
# see: http://stream0.org/2008/02/howto-extract-images-from-a-vi.html
#      for howto extract other images or ... do other stuff
#
INPUT="$1"
OUTPUT="$2"
if [[ -f "$INPUT" ]] && [[ -n "$OUTPUT" ]]; then
  ffmpeg -i $INPUT -r 1  -t 00:00:01 -f image2 $OUTPUT
else
  echo "Usage: ogg2png foo.ogv foo.png"
fi

ogg -> avi

#! /bin/bash
INPUT="$1"
OUTPUT="$2"
if [[ -f "$INPUT" ]] && [[ -n "$OUTPUT" ]]; then
	mencoder $INPUT -o $OUTPUT -oac mp3lame -ovc lavc 
else
	echo "Usage: ogg2avi foo.ogg foo.avi"
fi

ogg -> x264 (mp4)

#! /bin/bash
INPUT="$1"
OUTPUT="$2"
OPTION="$3"
if [[ -f "$INPUT" ]] && [[ -n "$OUTPUT" ]]; then
  if [[ -n "$OPTION" ]]; then
    if [[ "$OPTION" = "--simple" ]]; then
      echo "creating simple mp4"
      ffmpeg -i $INPUT -vcodec libx264 $OUTPUT
      exit
    fi
  fi
 
  ffmpeg -i "$INPUT" -vcodec libx264 -g 250 -coder ac -me_method full -me_range 16 -subq 5 -sc_threshold 40 -acodec libfaac -ab 96000 -ar 22500 -cmp +chroma -partitions +parti4x4+partp8x8+partb8x8 -i_qfactor 0.71 -b_strategy 1 -crf 30 -y "$OUTPUT"
 
  # simple: ffmpeg -i yourinputvideo.ogv -vcodec libx264 output.mp4
  
  # whole: ffmpeg -i "$INPUT" -vcodec libx264 -s 800x592 -r 15 -g 250 -keyint_min 25 -coder ac -me_method full -me_range 16 -subq 5 -sc_threshold 40 -acodec libfaac -ab 96000 -ar 22500 -cmp +chroma -partitions +parti4x4+partp8x8+partb8x8 -i_qfactor 0.71 -b_strategy 1 -crf 30 -y "$OUTPUT"
 
else
  echo "Usage: ogg2mp4 foo.ogg foo.mp4 [--simple]"
fi

ogg -> xvid

#! /bin/bash
INPUT="$1"
OUTPUT="$2"
if [[ -f "$INPUT" ]] && [[ -n "$OUTPUT" ]]; then
  nice -n 19 mencoder $INPUT \
    -oac mp3lame -lameopts abr:br=92 \
    -ovc xvid -xvidencopts pass=2:bitrate=150 \
    -o $OUTPUT
else
  echo "Usage: ogg2xvid foo.ogg foo.avi"
fi