EXAMPLES:

1. to decode a bitstream with double precision IDCT, such as 
   to create a reference reconstruction set of frames:

    mpeg2decode -r -f -o0 rec%d  -b bitstream.mpg

2. to decode a bitstream with fast integer IDCT, such as 
   to create a test reconstruction set of frames:

    mpeg2decode -f -o0 rec%d -b bitstream.mpg 

3. To substitute reference pictures with external reference 
   pictures (ref%d):

    mpeg2decode -f -x ref%d -b bitstream.mpg -o0 rec%d


4. Same as 3. only using a single large concatenated file for the
   sequence of reconstruction frames.

    mpeg2decode -f -g -x ref%d bitstream.mpg -o0 rec%d

5. Decode an SNR enhancement bitstream at the same time as base layer
   stream:

    mpeg2decode -o0 rec%d -e snr_bitstream.mpg -b base_bitstream.mpg 

6. Decode a Spatially scalable bitstream

   Step 1: create lower layer reconstruction

     mpeg2decode -f -o0 llrec%d -b base_layer.mpg

   Step 2: decode enhancement bitstream, combined reconstruction.

     mpeg2decode -f -l llrec%d -b enhancement_layer.mpg -o0 rec%d

------------
     where:
      -o0             specifies .Y, .U, .V input
      -f              specifies field interleaved format
      -b              is the bitstream flag
      -g              specifies substitute file is a large concatendated one.
      -e              substitution flag
      ref.pic         filename of substitution sequence
      bitstream.mpg   bitstream
      test%d          output file pattern