avifdec - decompress an AVIF file to an image file

avifdec  decompresses  an AVIF file to an image file.  Output format can be either JPEG, PNG or YUV4MPEG2
       (Y4M).

       Decompress an AVIF file to a PNG file:
              $ avifdecinput.avifoutput.png

       avifdec - decompress an AVIF file to an image file

-h, --help
              Show syntax help.

       -V, --version
              Show the version number.

       -j, --jobsJ
              Number of jobs (worker threads), or `all' to potentially use as many cores as possible.  (Default:
              all).

       -c, --codecC
              Codec to use.

              Possible values depend on the codecs enabled at build  time  (see  --help  or  --version  for  the
              available codecs).  Default is auto-selected from the available codecs.

              Possible values are:

              • aom

              • dav1d

              • libgav1-d, --depthD
              Output depth, either 8 or 16.  (PNG only; For y4m, depth is retained, and JPEG is always 8bpc).

       -q, --qualityQ
              Output quality in 0..100.  (JPEG only, default: 90).

       --png-compressL
              PNG compression level in 0..9 (PNG only; 0=none, 9=max).  Defaults to libpng’s builtin default.

       -u, --upsamplingU
              Chroma  upsampling  (for 420/422).  One of `automatic' (default), `fastest', `best', `nearest', or
              `bilinear'.

       -r, --raw-color
              Output raw RGB values instead of multiplying by alpha when saving to opaque  formats  (JPEG  only;
              not applicable to y4m).

       --indexI
              When  decoding  an image sequence or progressive image, specify which frame index to decode, where
              the first frame has index 0, or `all' to decode all frames.  (Default: 0)

       --progressive
              Enable progressive AVIF processing.  If a progressive image is encountered  and  --progressive  is
              passed, avifdec will use --index to choose which layer to decode (in progressive order).

       --no-strict
              Disable strict decoding, which disables strict validation checks and errors.

       -i, --info
              Decode all frames and display all image information instead of saving to disk.

       --iccFILENAME
              Provide an ICC profile payload (implies --ignore-icc).

       --ignore-icc
              If the input file contains an embedded ICC profile, ignore it (no-op if absent).

       --size-limitC
              Maximum image size (in total pixels) that should be tolerated.  (Default: 268435456).

       --dimension-limitC
              Maximum  image  dimension  (width  or  height)  that  should  be  tolerated.   Set to 0 to ignore.
              (Default: 32768).

       --     Signal the end of options.  Everything after this is interpreted as file names.

       Bugs can be reported on GitHub at:
              https://github.com/AOMediaCodec/libavif/issues

avifenc(1)

libavif 1.2.1                                      2022-04-30                                         AVIFDEC(1)

avifdec [options] input.avifoutput.[jpg|jpeg|png|y4m]

       avifdec--infoinput.avif