video/m_encode

   1 #! /bin/sh
   2
   3 if [ -z "$1" ]; then
   4    echo "Usage: [vcodec=s] [vbitrate=n] [vscale=s] [aid=n] [acodec=s] [abitrate=n] [ascale=s] [pass=n] $0 [-mencoder_options] input.avi..."
   5    exit 1
   6 fi
   7
   8 if [ -z "$vcodec" ]; then
   9    vcodec=lavc
  10 else
  11    vcodec="$vcodec"
  12 fi
  13
  14 if [ -z "$vbitrate" ]; then
  15    vbitrate=1600
  16 else
  17    vbitrate="$vbitrate"
  18 fi
  19
  20 if [ -n "$vscale" ]; then
  21    vscale="-vf scale=$vscale"
  22 fi
  23
  24 if [ -z "$acodec" ]; then
  25    acodec=mp3lame
  26 else
  27    acodec="$acodec"
  28 fi
  29
  30 if [ -z "$abitrate" ]; then
  31    abitrate=256
  32 else
  33    abitrate="$abitrate"
  34 fi
  35
  36 if [ -n "$ascale" ]; then
  37    ascale="-af volume=$ascale"
  38 fi
  39
  40 if [ "$vcodec" = lavc ]; then
  41    vopts="-lavcopts vcodec=mpeg4:vbitrate=$vbitrate:autoaspect"
  42
  43 elif [ "$vcodec" = lavc-hq ]; then
  44    vcodec=lavc
  45    vopts="-lavcopts vcodec=mpeg4:vbitrate=$vbitrate:autoaspect:mbd=2:trell:v4mv:last_pred=2:dia=-1:vmax_b_frames=2:vb_strategy=1:cmp=3:subcmp=3:precmp=0:vqcomp=0.6:turbo"
  46
  47 elif [ "$vcodec" = lavc-vhq ]; then
  48    vcodec=lavc
  49    vopts="-lavcopts vcodec=mpeg4:vbitrate=$vbitrate:autoaspect:mbd=2:trell:v4mv:last_pred=3:dia=2:vmax_b_frames=2:vb_strategy=1:cmp=2:subcmp=2:precmp=2:mv0:cbp:predia=2:preme=2:qns=2"
  50
  51 elif [ "$vcodec" = x264 ]; then
  52    vopts="-x264encopts bitrate=$vbitrate"
  53
  54 elif [ "$vcodec" = x264-hq ]; then
  55    vcodec=x264
  56    vopts="-x264encopts bitrate=$vbitrate:subq=5:8x8dct:frameref=2:bframes=3:b_pyramid:weight_b"
  57
  58 elif [ "$vcodec" = x264-vhq ]; then
  59    vcodec=x264
  60    vopts="-x264encopts bitrate=$vbitrate:subq=6:8x8dct:frameref=5:bframes=3:b_pyramid:weight_b:partitions=all:me=umh"
  61
  62 elif [ "$vcodec" = xvid ]; then
  63    vopts="-xvidencopts bitrate=$vbitrate"
  64
  65 elif [ "$vcodec" = xvid-hq ]; then
  66    vcodec=xvid
  67    vopts="-xvidencopts bitrate=$vbitrate:chroma_opt:vhq=2:bvhq=1:quant_type=mpeg"
  68
  69 elif [ "$vcodec" = xvid-vhq ]; then
  70    vcodec=xvid
  71    vopts="-xvidencopts bitrate=$vbitrate:chroma_opt:vhq=4:bvhq=1:quant_type=mpeg"
  72
  73 elif [ "$vcodec" = copy ]; then
  74    vopts=""
  75
  76 else
  77    echo "Unknown video codec $vcodec; known codecs are {lavc,x264,xvid}[-[v]hq], copy" >&2
  78    exit 1
  79 fi
  80
  81 if [ "$acodec" = mp3lame ]; then
  82    aopts="-lameopts cbr:br=$abitrate:q=0"
  83 elif [ "$acodec" = copy ]; then
  84    aopts=""
  85 else
  86    echo "Unknown audio codec $acodec; known codecs are mp3lame and copy" >&2
  87    exit 1
  88 fi
  89
  90 if [ "$aid" ]; then
  91    aopts="$aopts -aid $aid"
  92 fi
  93
  94 if [ -z "$pass" ]; then
  95    pass=1
  96 else
  97    pass="$pass"
  98 fi
  99
 100 if [ "$vcodec" = lavc ]; then
 101    vpass=vpass
 102 elif [ "$vcodec" = x264 ]; then
 103    vpass=pass
 104 elif [ "$vcodec" = xvid ]; then
 105    vpass=pass
 106 fi
 107
 108 if [ "$pass" -eq 1 ]; then
 109    exec mencoder -ovc "$vcodec" $vopts          $vscale -oac "$acodec" $aopts $ascale -o output.avi "$@"
 110
 111 elif [ "$pass" -eq 2 ]; then
 112
 113         mencoder -ovc "$vcodec" $vopts:$vpass=1 $vscale -nosound                      -o /dev/null "$@" &&
 114    exec mencoder -ovc "$vcodec" $vopts:$vpass=2 $vscale -oac "$acodec" $aopts $ascale -o output.avi "$@"
 115
 116 elif [ "$pass" -eq 3 ]; then
 117
 118         mencoder -ovc "$vcodec" $vopts:$vpass=1 $vscale -nosound                      -o /dev/null "$@" &&
 119         mencoder -ovc "$vcodec" $vopts:$vpass=3 $vscale -nosound                      -o /dev/null "$@" &&
 120    exec mencoder -ovc "$vcodec" $vopts:$vpass=3 $vscale -oac "$acodec" $aopts $ascale -o output.avi "$@"
 121                                        # pass=3 is not a typo!
 122
 123 else
 124    echo "Can only do 1, 2 or 3 passes." >&2
 125    exit 1
 126 fi