Provided by: advancecomp_1.15-1_amd64 bug


       advmng ‐ AdvanceCOMP MNG Compression Utility


       advmng [‐l, ‐‐list] [‐z, ‐‐recompress]
            [‐x, ‐‐extract] [‐a, ‐‐add RATE MNG_FILE PNG_FILES...]
            [‐0, ‐‐shrink‐store] [‐1, ‐‐shrink‐fast] [‐2, ‐‐shrink‐normal]
            [‐3, ‐‐shrink‐extra] [‐4, ‐‐shrink‐insane]
            [‐s, ‐‐scroll HxV] [‐S, ‐‐scroll‐square]
            [‐e, ‐‐expand] [‐r, ‐‐reduce]
            [‐c, ‐‐lc] [‐C, ‐‐vlc] [‐f, ‐‐force] [‐q, ‐‐quiet] [‐v, ‐‐verbose]
            [‐h, ‐‐help] [‐V, ‐‐version] FILES...


       The  main  purpose of this utility is to recompress MNG files to get the smallest possible

       Please note that this utility is not able to read a generic file. It’s granted to be  able
       to read only the files generated by the AdvanceMAME emulator.

       To compress the files this utility uses the following strategies:
       ·      Remove all ancillary chunks.
       ·      Use  the  MNG Delta feature to compress video clips with only small changes between
       ·      Use the MNG Move feature to  compress  video  clips  with  a  scrolling  background
              (option ‐s).
       ·      Reduce the color depth to 8 bit (option ‐r).
       ·      Use the 7zip Deflate implementation.


       ‐l, ‐‐list FILES...
              List the content of the specified files.

       ‐z, ‐‐recompress FILES...
              Recompress  the specified files. If the ‐1, ‐2, ‐3 options are specified, it’s used
              the smallest file choice from the previous compressed data and the new compression.
              If the ‐0 option is specified the file is always rewritten without any compression.

       ‐x, ‐‐extract FILES...
              Extract all the .png frames in the .mng clips.  You can use the ‐‐shrink options to
              control the compression ratio of the .png files. The extracted images are always 24
              bit  images  with  alpha  channel.   You  can  remove the alpha channel with the ‐n

       ‐a, ‐‐add RATE MNG_FILE PNG_FILES...
              Compress all the .png files on the command line as a .mng file. All the .png  files
              must  have  the  same size and the same bit depth. You must also specify an integer
              frame rate to use in the


       ‐0, ‐‐shrink‐store
              Disable the compression. The file is only stored and not compressed.  The  file  is
              always rewritten also if it’s bigger.

       ‐1, ‐‐shrink‐fast
              Set the compression level to ˝fast˝.

       ‐2, ‐‐shrink‐normal
              Set the compression level to ˝normal˝. This is the default level of compression.

       ‐3, ‐‐shrink‐extra
              Set the compression level to ˝extra˝.

       ‐4, ‐‐shrink‐insane
              Set the compression level to ˝insane˝. It’s VERY SLOW.

       ‐s, ‐‐scroll HxV
              The  ˝‐s HxV˝ option specifies the size of the pattern (H width x V height) used to
              check for a scrolling background. The size is expressed in pixels and  it  must  be
              bigger  or  equal  than the scrolling speed of the background. For example take the
              game 1942 that scrolls vertically by 1 pixel every frame. If you recorded  with  an
              interleave  factor  of  2 the vertical scrolling speed is 1*2 = 2. In this case the
              minimum pattern is ˝‐s 0x2˝.  Generally you can use ˝‐s 8x8˝ and use bigger  values
              only  for  games  scrolling  faster.  If  the  game  scrolls  only  horizontally or
              vertically you can speed up a lot the  compression  with  monodirectional  patterns
              like ˝‐s 16x0˝ or ˝‐s 0x16˝.

       ‐S, ‐‐scroll‐square N
              This  option  is  like  the  option  ˝‐s  NxN˝  but  excludes  big movement on both
              directions reducing the computation time. Specifically the check done is X+Y<=N.

       ‐r, ‐‐reduce
              Force the color reduction to 8 bit. The reduction is really done only if any  frame
              have  less  than  256  colors  and  if  no  alpha  channel is present. To force the
              reduction also if an alpha channel is present use the ‐n option.

       ‐e, ‐‐expand
              Force the color expansion to 24 bit.

       ‐n, ‐‐noalpha
              Remove the alpha channel if present.

       ‐c, ‐‐lc
              Force the use of the MNG LC (Low Complexity) specifications. It disables the  delta
              compression.  The file is always rewritten also if it’s bigger.

       ‐C, ‐‐vlc
              Force  the use of the MNG VLC (Very Low Complexity) specifications. It disables the
              delta compression and the precise timing. Warning! you may lose the correct  timing
              information  because  the  VLC  format only supports integer frequency. The file is
              always rewritten also if it’s bigger.

       ‐f, ‐‐force
              Force the use of the new file also if it’s bigger.

       ‐q, ‐‐quiet
              Don’t print the filenames.

       ‐v, ‐‐verbose
              Print more information on the compression process.


       A good tradeoff of recompression and time is the command :

           advmng ‐z ‐r ‐S 16 *.mng

       To create a .mng file from a series of .png files use the command :

           advmng ‐a 30 video.mng video*.png

       To extract all the images in a .mng file use the command :

           advmng ‐x video.mng


       This file is Copyright (C) 2003 Andrea Mazzoleni, Filipe Estima


       advzip(1), advpng(1), advdef(1)

                                                           AdvanceCOMP MNG Compression Utility(1)