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Andrew Murray 2024-12-28 22:18:02 +11:00
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docs/handbook/image-file-formats.rst
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@ -572,12 +572,19 @@ JPEG 2000
Pillow reads and writes JPEG 2000 files containing ``L``, ``LA``, ``RGB``,
``RGBA``, or ``YCbCr`` data. When reading, ``YCbCr`` data is converted to
``RGB`` or ``RGBA`` depending on whether or not there is an alpha channel.
Beginning with version 8.3.0, Pillow can read (but not write) ``RGB``,
``RGBA``, and ``YCbCr`` images with subsampled components. Pillow 10.4.0 and
later can read ``CMYK`` images with OpenJPEG 2.5.1 and later, and Pillow 11.1.0
and later can write ``CMYK`` images with OpenJPEG 2.5.3 and later. Pillow
supports JPEG 2000 raw codestreams (``.j2k`` files), as well as boxed JPEG 2000
files (``.jp2`` or ``.jpx`` files).
.. versionadded:: 8.3.0
Pillow can read (but not write) ``RGB``, ``RGBA``, and ``YCbCr`` images with
subsampled components.
.. versionadded:: 10.4.0
Pillow can read ``CMYK`` images with OpenJPEG 2.5.1 and later.
.. versionadded:: 11.1.0
Pillow can write ``CMYK`` images with OpenJPEG 2.5.3 and later.
Pillow supports JPEG 2000 raw codestreams (``.j2k`` files), as well as boxed
JPEG 2000 files (``.jp2`` or ``.jpx`` files).
When loading, if you set the ``mode`` on the image prior to the
:py:meth:`~PIL.Image.Image.load` method being invoked, you can ask Pillow to