From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from smtp-out-no.shaw.ca (smtp-out-no.shaw.ca [64.59.134.9]) by sourceware.org (Postfix) with ESMTPS id 90D4C3861893 for ; Thu, 13 Aug 2020 15:15:28 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.3.2 sourceware.org 90D4C3861893 Authentication-Results: sourceware.org; dmarc=none (p=none dis=none) header.from=SystematicSw.ab.ca Authentication-Results: sourceware.org; spf=none smtp.mailfrom=brian.inglis@systematicsw.ab.ca Received: from [192.168.1.104] ([24.64.172.44]) by shaw.ca with ESMTP id 6Ewvk3aIEng7K6EwwkMZuV; Thu, 13 Aug 2020 09:15:27 -0600 X-Authority-Analysis: v=2.3 cv=ecemg4MH c=1 sm=1 tr=0 a=kiZT5GMN3KAWqtYcXc+/4Q==:117 a=kiZT5GMN3KAWqtYcXc+/4Q==:17 a=IkcTkHD0fZMA:10 a=8pif782wAAAA:8 a=86U1H9NdAAAA:8 a=jChkm-x5hCMFubTIiR0A:9 a=QEXdDO2ut3YA:10 a=3ocqyLwIp7_IhjRobAq6:22 Reply-To: cygwin@cygwin.com Subject: Re: heic to jpg conversion To: cygwin@cygwin.com References: From: Brian Inglis Autocrypt: addr=Brian.Inglis@SystematicSw.ab.ca; prefer-encrypt=mutual; keydata= mDMEXopx8xYJKwYBBAHaRw8BAQdAnCK0qv/xwUCCZQoA9BHRYpstERrspfT0NkUWQVuoePa0 LkJyaWFuIEluZ2xpcyA8QnJpYW4uSW5nbGlzQFN5c3RlbWF0aWNTdy5hYi5jYT6IlgQTFggA PhYhBMM5/lbU970GBS2bZB62lxu92I8YBQJeinHzAhsDBQkJZgGABQsJCAcCBhUKCQgLAgQW AgMBAh4BAheAAAoJEB62lxu92I8Y0ioBAI8xrggNxziAVmr+Xm6nnyjoujMqWcq3oEhlYGAO WacZAQDFtdDx2koSVSoOmfaOyRTbIWSf9/Cjai29060fsmdsDLg4BF6KcfMSCisGAQQBl1UB BQEBB0Awv8kHI2PaEgViDqzbnoe8B9KMHoBZLS92HdC7ZPh8HQMBCAeIfgQYFggAJhYhBMM5 /lbU970GBS2bZB62lxu92I8YBQJeinHzAhsMBQkJZgGAAAoJEB62lxu92I8YZwUBAJw/74rF IyaSsGI7ewCdCy88Lce/kdwX7zGwid+f8NZ3AQC/ezTFFi5obXnyMxZJN464nPXiggtT9gN5 RSyTY8X+AQ== Organization: Systematic Software Message-ID: <70f2d266-f012-0b7e-4421-d3e180c17c62@SystematicSw.ab.ca> Date: Thu, 13 Aug 2020 09:15:24 -0600 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:68.0) Gecko/20100101 Thunderbird/68.11.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Language: en-CA Content-Transfer-Encoding: 7bit X-CMAE-Envelope: MS4wfARIs3DKooVs2rvZQIgi9ETE+9wluAMaz/SNmcswqucjIzQCwQkaZL4NKUHj7ZYe5pfPOXr6Re9LRWAnPDU+6/lKucDNj9WaM0xT5WPD7J8S7RNePm+V HbDD/4LVWFYOpdUc1KDXJyte/rsLudteVyjEvN3xR1ivQSYtd5z7NkWOtYB6gWwD7dz04A+ucQxbbg== X-Spam-Status: No, score=-6.2 required=5.0 tests=BAYES_05, KAM_DMARC_STATUS, KAM_LAZY_DOMAIN_SECURITY, NICE_REPLY_A, RCVD_IN_DNSWL_LOW, RCVD_IN_MSPIKE_H3, RCVD_IN_MSPIKE_WL, SPF_HELO_NONE, SPF_NONE, TXREP autolearn=no autolearn_force=no version=3.4.2 X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on server2.sourceware.org X-BeenThere: cygwin@cygwin.com X-Mailman-Version: 2.1.29 Precedence: list List-Id: General Cygwin discussions and problem reports List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 13 Aug 2020 15:15:30 -0000 On 2020-08-13 04:13, Fergus Daly via Cygwin wrote: >>> Does Cygwin include the capability to convert heic to jpg (or png or anything else Windows-readable)? >>> I tried "convert" (previously all-powerful) but that does not work (in any obvious way, anyway). >>> Thank you! > >> Works for me. What does `type convert` say? > > I have this: > > ~/tmp> type convert > convert is /usr/bin/convert > ~/tmp> ls -x > L1a.heic L2a.heic > ~/tmp> file * > L1a.heic: ISO Media > L2a.heic: ISO Media > ~/tmp> convert L1a.heic L1a.jpg > convert: no decode delegate for this image format `HEIC' @ error/constitute.c/ReadImage/560. > convert: no images defined `L1a.jpg' @ error/convert.c/ConvertImageCommand/3258. > > (BTW, in the above dialogue, should ISO Media read IOS Media?) Apparently not although it came from MPEG developments of Apple Quicktime format which gave rise to a slew of ISO standards: https://en.wikipedia.org/wiki/High_Efficiency_Image_File_Format is part of ISO/IEC 23008-12 MPEG-H Standard, which also includes HEVC High Efficiency Video Coding ITU-T H.265/.1/.2, some ITU-T H series supplements, and MMT MPEG Media Transport; it appears to be a specialization of ISO/IEC 14496-12:2004-2015 MPEG-4 Part 12 base media file format aka ISO/IEC 15444-12:2004-2015 JPEG 2000 Part 12 which was dropped in 2017 in favour of the former, which is available in http://standards.iso.org/ittf/PubliclyAvailableStandards/c068960_ISO_IEC_14496-12_2015.zip. So HEIF would be a better file format label, whereas ISO media includes the above (which not many people would think of), but could also imply ISO 9660:1988 for optical disks and archive images thereof (which most people would think of), possibly including any or all of IEEE Rock Ridge (POSIX compatible extensions), MS Joliet "Unicode" name extensions, El Torito bootable CD extensions, and/or Apple ISO 9660 MacOS file extensions; that also applies to the later replacement OSTA Optical Storage Technology Association ISO/IEC 13346:1995-1999/ECMA-167:1997 UDF Universal Disk Format. -- Take care. Thanks, Brian Inglis, Calgary, Alberta, Canada This email may be disturbing to some readers as it contains too much technical detail. Reader discretion is advised. [Data in IEC units and prefixes, physical quantities in SI.]