XPost: alt.comp.os.windows-11, alt.comp.os.windows-11
On Thu, 11/28/2024 11:59 AM, david wrote:
Using <news:vi5q9d$3mam9$1@dont-email.me>, EndlessSept wrote:
Pro tip: real photographers do not, ever, use Irfanview ...
I'm not a pro photographer. I'm just trying to work with HEIC files.
I'm sick of this abnormal nonstandard hugely inefficient HEIC format.
I finally got HEIC working on Windows with Irfanview but what I found out
was a folder with just twenty five or so HEIC files takes *forever* to just open up in Windows 10 - whereas that same folder converted to a normal
format (such as JPEG) takes less than a second to display just the file names.
HEIC is so inefficient that I deleted all the HEIC files once I converted them to a normal JPEG format using the efficient Irfanview batch converter.
That's how bad the HEIC format is, in terms of efficiency, even as each individual HEIC file is puny in size (less than a megabyte) compared to the equivalent normal JPEG file which is multiple megabytes in size.
It's not size that makes HEIC so inefficient a file format.
It's something else.
My recommendation is to avoid HEIC files like you'd avoid a rabid dog.
If someone sends you HEIC files, ask them to convert them to a normal
format before sending them. That's my advice born of my new experiences.
Never throw away samples of exotic file types!
You need samples of things, to vet computer programs.
For example, the 2.10 version of GIMP, should open HEIC,
and if the HEIC file contains two pictures, the custom
GIMP interface shows you previews of them, so you can
select which image you want to edit.
Even if this is not a preferred tool for editing, it
can still be used just for converting those images.
https://www.gimp.org/
*******
I found a sample here, a while back. That's what I use.
https://github.com/strukturag/libheif/tree/master/examples
example.heic fix iinf box version in example image Jul 9, 2024
Name: example.heic
Size: 718,114 bytes (701 KiB)
SHA256: 7F8B363E4936C0666A25F64F3A92FDA10BD8E5453BE4592530B65A55DD98F3F2
file example.heic
example.heic: ISO Media, HEIF Image
Still returns the same detection, as the previous sample of the same file.
[Picture] "A file ending in .heic , with two images stored inside the one file"
https://i.postimg.cc/bJJ25LDd/gimp-opens-heic.jpg
If your proposed conversion software is working, it should
find *two* images inside that sample file, and offer to
create two output files with them.
Paul
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