AXIOM Beta/experimental raw video

AXIOM Beta UHD Raw Workflow Explained: https://www.apertus.org/axiom-beta-uhd-raw-mode-explained-article-may-2016

Experimental Raw Video to PGM Sequence Conversion

Converts a video file recorded in AXIOM raw to a PGM image sequence and applies the darkframe (which needs to be created beforehand).

Currently clips must go through ffmpeg before hdmi4k can read them:

ffmpeg -i CLIP.MOV -c:v copy OUTPUT.MOV

To cut out a video between IN and OUT with ffmpeg but maintaing the original encoding data:

ffmpeg -i CLIP.MOV -ss IN_SECONDS -t DURATION_SECONDS -c:v copy OUTPUT.MOV

hdmi4k
HDMI RAW converter for Axiom BETA

Usage:
  ./hdmi4k clip.mov
  raw2dng frame*.pgm [options]

Calibration files:
  hdmi-darkframe-A.ppm, hdmi-darkframe-B.ppm:
  averaged dark frames from the HDMI recorder (even/odd frames)

Options:
-                   : Output PGM to stdout (can be piped to raw2dng)
--3x3               : Use 3x3 filters to recover detail (default 5x5)
--skip              : Toggle skipping one frame (try if A/B autodetection fails)
--swap              : Swap A and B frames inside a frame pair (encoding bug?)
--onlyA             : Use data from A frames only (for bad takes)
--onlyB             : Use data from B frames only (for bad takes)

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