ppmtompeg

Encode PPM image sequences to MPEG video

TLDR

Encode PPM frames to MPEG using a parameter file

$ ppmtompeg [path/to/param_file]

Encode with statistics output

$ ppmtompeg -stat [path/to/stats.txt] [path/to/param_file]

Encode silently showing only errors

$ ppmtompeg -realquiet [path/to/param_file]

Encode a specific frame range

$ ppmtompeg -frames [0] [99] [path/to/param_file]

SYNOPSIS

ppmtompeg [options] parameterfile_

ppmtompeg encodes PPM image sequences to MPEG-1 video bitstreams. All encoding settings (input files, output file, frame pattern, GOP size, quality) are specified in a parameter file rather than on the command line. The parameter file format is case-sensitive and uses keywords like INPUTDIR, PATTERN, GOPSIZE, and BASEFILEFORMAT. Part of the Netpbm toolkit. The -gop, -combinegops, -frames, and -combineframes options are mutually exclusive.

PARAMETERS

parameterfile_

File with encoding parameters.

-stat file

Append encoding statistics to a file.

-realquiet

Suppress all output except errors.

-quiet n

Limit time-remaining reports to every n seconds.

-no_frame_summary

Suppress per-frame summary lines.

-float_dct

Use more accurate but slower floating-point DCT.

-gop num

Encode only a specific numbered GOP.

-combine_gops

Merge separate GOP files into a single MPEG stream.

-frames first last

Encode only the specified frame range.

-combine_frames

Merge individual MPEG frames into one stream.

-nice

Run remote processes at low priority.

-snr

Include signal-to-noise ratio in statistics.

CAVEATS

Legacy encoder. Consider ffmpeg for modern video encoding.