make-mp4.sh

   1 V_BIT_RATE=768kb
   2 A_BIT_RATE=128kb
   3
   4 LOG="timings/$2-mp4.log"
   5 TIC=`date +%s`
   6
   7 ffmpeg -i $1 -v -1 -y\
   8        -pass 1 -threads 0 -y \
   9        -vcodec libx264 -b "$V_BIT_RATE"  -bt "$V_BIT_RATE" \
  10        -vpre fastfirstpass \
  11        "encodes/$2-first.mp4" 2> /dev/null
  12
  13 ffmpeg -i $1 -v -1 -y \
  14        -pass 2 -threads 0 \
  15        -vcodec libx264 -b "$V_BIT_RATE" -bt "$V_BIT_RATE" \
  16        -vpre hq \
  17        -acodec libfaac -ac 1 -ab "$A_BIT_RATE" \
  18        "encodes/$2.mp4" 2> /dev/null
  19
  20 mv "ffmpeg2pass-0.log" "$2-ffmpeg2pass-0.log"
  21 mv "x264_2pass.log" "$2-x264_2pass.log"
  22
  23 TOC=`date +%s`
  24
  25 echo "`expr $TOC - $TIC`" >> $LOG
  26