ld chroma decoder

ld-chroma-decoder

This application takes the PAL or NTSC TBC input video and performs chroma decoding (i.e colourises it). Output is a sequence of RGB 16-16-16 video frames suitable for pipelining to an external application such as ffmpeg.

Syntax:

ld-chroma-decoder <options> <input TBC file name> (<output RGB file name>)

The output RGB file name is optional. If omitted the output will be sent to stdout (for pipe-lining).

Most of the options here correspond to settings in ld-analyse's 'Chroma decoder configuration' window, so you can experiment with them interactively using ld-analyse. For more information on what the settings mean, see the ld-analyse User Guide.

The mono filter isn't available in ld-analyse. It treats the whole signal as being luma, so it's the best choice when you know that the input video doesn't contain any colour information (e.g. black-and-white films).

Options:
  -h, --help                      Displays this help.
  -v, --version                   Displays version information.
  -d, --debug                     Show debug
  -q, --quiet                     Suppress info and warning messages
  --input-json <filename>         Specify the input JSON file (default
                                  input.json)
  -s, --start <number>            Specify the start frame number
  -l, --length <number>           Specify the length (number of frames to
                                  process)
  -r, --reverse                   Reverse the field order to second/first
                                  (default first/second)
  --chroma-gain <number>          Gain factor applied to chroma components
                                  (default 1.0)
  -b, --blackandwhite             Output in black and white
  -f, --decoder <decoder>         Decoder to use (pal2d, transform2d,
                                  transform3d, ntsc1d, ntsc2d, ntsc3d,
                                  ntsc3dnoadapt, mono; default automatic)
  -t, --threads <number>          Specify the number of concurrent threads
                                  (default number of logical CPUs)
  -o, --oftest                    NTSC: Overlay the adaptive filter map (only
                                  used for testing)
  -w, --white                     NTSC: Use 75% white-point (default 100%)
  --chroma-nr <number>            NTSC: Chroma noise reduction level in dB
                                  (default 0.0)
  --luma-nr <number>              NTSC: Luma noise reduction level in dB
                                  (default 1.0)
  --simple-pal                    Transform: Use 1D UV filter (default 2D)
  --transform-mode <mode>         Transform: Filter mode to use (level,
                                  threshold; default threshold)
  --transform-threshold <number>  Transform: Uniform similarity threshold in
                                  'threshold' mode (default 0.4)
  --transform-thresholds <file>   Transform: File containing per-bin similarity
                                  thresholds in 'threshold' mode
  --show-ffts                     Transform: Overlay the input and output FFTs

Arguments:
  input                           Specify input TBC file (- for piped input)
  output                          Specify output RGB file (omit or - for piped
                                  output)