TOOLS/mplmult.sh

   1 #!/bin/bash
   2 # example how to output video on multiple windows in sync.
   3 # might be even more useful in combination with vo ggi
   4 # to distribute the video arbitrarily
   5
   6 dir=/tmp/$$
   7 count=$1
   8 shift
   9
  10 if test 0"$count" -lt 1; then
  11   echo "At least 1 slave instance must be used."
  12   echo ""
  13   echo "Usage:"
  14   echo "./mplmult.sh n mplayer-opts"
  15   echo "n              number of MPlayer instances that display the video"
  16   echo "mplayer-opts   anything you would specify to mplayer,"
  17   echo "               more than one file will usually not work"
  18   exit 1
  19 fi
  20
  21 mkdir -m 700 $dir
  22 if test $? -ne 0; then
  23   echo "Could not create temp dir!"
  24   exit 1
  25 fi
  26
  27 mkfifo $dir/stream.yuv
  28 i=1
  29 fifo_list=""
  30 while test $i -le $count; do
  31   fifo_list="$dir/mp$i $fifo_list"
  32   let i=$i+1
  33 done
  34
  35 mkfifo $fifo_list
  36 (cat $dir/stream.yuv | tee $fifo_list > /dev/null ) &
  37 for fifo in $fifo_list; do
  38   # -benchmark is neccessary so that it will not do any timing.
  39   # the master instance already takes care of it and not specifying
  40   # it will break A-V sync.
  41   mplayer -nocache -quiet -benchmark "$fifo" > /dev/null 2>&1 &
  42 done
  43 mplayer -nocache -fixed-vo -vo yuv4mpeg:file=$dir/stream.yuv "$@"
  44
  45 rm -rf $dir