Notes on mpeg_encode

Note this command is available on the bh machines only.

• Usage:

     Usage:  mpeg_encode [options] param_file
     Options:
             -stat stat_file:  append stats to stat_file
             -quiet n:  don't report remaining time for at least n seconds
             -realquiet:  output nothing at all if successful
             -no_frame_summary:  suppress frame summary lines
             -float_dct:  use more accurate floating point DCT
             -gop gop_num:  encode only the numbered GOP
             -combine_gops:  combine GOP files instead of encode
             -frames first_frame last_frame:  encode only the specified frames
             -combine_frames:  combine frame files instead of encode
             -nice:  run slave processes nicely
             -max_machines num_machines:  use at most num_machines machines
             -snr:  print signal-to-noise ratio
             -bit_rate_info rate_file:  put bit rate in specified file
             -mv_histogram:  show histograms of motion vectors
  

• IMPORTANT NOTE: The width of images (JPEG etc.) to be converted must be a multiple of 16.
  
  
• param_file: Sample parameter file for converting JPEG sequence to MPEG file (uses settings currently adopted by DV and xvs) Bold items will require modification in general.
  

  INPUT_DIR /tmp
  OUTPUT    the.mpg
  INPUT
  the_*.jpg  [0001-0039]
  END_INPUT
  BASE_FILE_FORMAT  JPEG
  PATTERN     IBBPBBPBBP
  INPUT_CONVERT  *
  GOP_SIZE 16
  SLICES_PER_FRAME  1
  PIXEL    HALF
  RANGE    10
  PSEARCH_ALG LOGARITHMIC
  BSEARCH_ALG CROSS2
  IQSCALE     1
  PQSCALE     1
  BQSCALE     1
  REFERENCE_FRAME   ORIGINAL
  FRAME_RATE 30
  FORCE_ENCODE_LAST_FRAME
  

• Execution trace of MPEG creation using above parameter file.
  
  
• Software Documentation
  • User's guide: (PS) [Yes, the pages are in reverse order; go figure].
  • template.param: Template parameter file.
  • param-summary: Summarizes parameter dependence for various MPEG coding strategies.
  • INPUT.FORMAT: Describes various file formats used by the software.
  • EXTENSIONS: Wish list/user implementation hints.
  
  
• Software HOME PAGE including download link.