heif-enc - convert image to HEIC/HEIF

Authors

       Dirk Farin, struktur AG

Bugs

       Please reports bugs or issues at https://github.com/strukturag/libheif

Copyright

       Copyright © 2017 struktur AG

                                                                                                     HEIF-ENC(1)

Description

heif-enc Convert image to HEIC/HEIF.

Exit Status

0
           Success

       1
           Failure (syntax or usage error; error while loading, converting or writing image).

Name

       heif-enc - convert image to HEIC/HEIF

Notes

       The  available  input  formats depend on the libraries that were available at compile time. Supported are
       JPEG, PNG and Y4M, the file type is determined based on the extension of the input file.

       When specifying multiple source images, they will all be saved into the same HEIF file.

       When using the x265 encoder, you may pass it any of its parameters by prefixing the parameter  name  with
       x265:.  Hence, to set the ctu parameter, you will have to set x265:ctu in libheif (e.g.: -px265:ctu=64).

       Note that there is no checking for valid parameters when using the prefix.

Options

-qQUALITY, --qualityQUALITY
              Defines quality level between 0 and 100 for the generated output file.

       -L, --lossless
              Generate lossless output (-q has no effect)

       -tSIZE, --thumbSIZE
              Generate thumbnail with maximum size SIZE pixels (default: off).

       --no-alpha
              Do not save alpha channel.

       --no-thumb-alpha
              Do not save alpha channel in thumbnail image.

       -oFILENAME, --outputFILENAME
              Output filename (optional).

       --verbose
              Enable logging output (more will increase logging level).

       -P, --params
              Show all encoder parameters and exit. Input file is not required or used.

       -bDEPTH
              Bit-depth of generated HEIF file when using 16-bit PNG input (default: 10 bit).

       -pNAME=VALUE
              Set additional encoder parameters. See NOTES below.

Synopsis

heif-enc  [-h|--help]  [-qQUALITY|--qualityQUALITY] [-L|--lossless] [-tSIZE|--thumbSIZE] [--no-alpha]
       [--no-thumb-alpha]  [-oFILENAME|--outputFILENAME]  [-v|--verbose]  [-P|--params]   [-bDEPTH]   [-pNAME=VALUE] filename[.jpg|.png|.y4m]