Linux command
ppmtompeg 命令
文件
复制后可按需替换文件名、目录或参数。
常用示例
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
ppmtompeg -realquiet [path/to/param_file]
Encode a specific frame range
ppmtompeg -frames [0] [99] [path/to/param_file]
说明
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 INPUT_DIR, PATTERN, GOP_SIZE, and BASE_FILE_FORMAT. Part of the Netpbm toolkit. The -gop, -combine_gops, -frames, and -combine_frames options are mutually exclusive.
参数
- -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.
FAQ
What is the ppmtompeg command used for?
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 INPUT_DIR, PATTERN, GOP_SIZE, and BASE_FILE_FORMAT. Part of the Netpbm toolkit. The -gop, -combine_gops, -frames, and -combine_frames options are mutually exclusive.
How do I run a basic ppmtompeg example?
Run `ppmtompeg [path/to/param_file]` in a terminal, then adjust file names, paths, flags, or remote targets for your system.
What does -stat _file_ do in ppmtompeg?
Append encoding statistics to a file.