resize_video.sh

#!/bin/bash

[[ -r $1 ]] || { echo "Usage: $0 <videofile-to-be-resized> [<videofile2> ...]"; exit 1; }

for INPUT_FILE in $@; do
  OUTPUT_MP4_FILE=$(echo $INPUT_FILE | sed 's/\.[^.]*$/.mp4/g')
  #See https://trac.ffmpeg.org/wiki/x264EncodingGuide
  avconv -y -i $INPUT_FILE -threads auto -c:v libx264 -preset medium -b:v 988k -pass 1 -an -f mp4 /dev/null && \
  avconv    -i $INPUT_FILE -threads auto -c:v libx264 -preset medium -b:v 988k -pass 2 -c:a libmp3lame -b:a 192k $OUTPUT_MP4_FILE
  rm -f av2pass* &>/dev/null
done