Hi Stefan

On Sun, Jan 31, 2016 at 04:29:43PM +0100, Stefan Rohde wrote:

Dear GIMP-Team,
I can not display images that I have prepared and saved with GIMP 2.8.14 (under Windows 10) in jpg-format on my TV or via a digital box (WD TV). On my PC its no problem!
The Thumbnailes can be seen but the images can not be read! I have also tried several setting for the jpg-saving.

Other images I prepared with former versions are working well!

Do you have an idea or information !?

Can you create a GIMP bug ticket on bugzilla.gimp.org and attach a sample JPEG image that is broken?

Mukund

On 31.1.2016 at 4:29 PM Stefan Rohde wrote:

I can not display images that I have prepared and saved with GIMP 2.8.14 (under Windows 10) in jpg-format on my TV or via a digital box (WD TV). On my PC its no problem!
The Thumbnailes can be seen but the images can not be read! I have also tried several setting for the jpg-saving.

Other images I prepared with former versions are working well!

Do you have an idea or information !?

Hi Stefan,

did you also try various settings of the subsampling (in the German dialog box: Zwischenschritte, although 'Farbunterabtastung' is the proper translation here)? If you report a bug, please make sure to use version 2.8.16 which is the latest.

Greetings

Sven

Hi Mr. Rohde,

please reply to all recipients.

On Sun, 31 Jan 2016 16:29:43 +0100 Stefan Rohde wrote:

Dear GIMP-Team,
I can not display images that I have prepared and saved with GIMP 2.8.14 (under Windows 10) in jpg-format on my TV or via a digital box (WD TV). On my PC its no problem!
The Thumbnailes can be seen but the images can not be read! I have also tried several setting for the jpg-saving.

Other images I prepared with former versions are working well!

Can you send us a sample image ? It is possible that your television implements only a subset of the JPEG standard. To verify , can you let me know if the following JPEG file that I first converted to PNG using ImageMagick and then saved as JPEG From GIMP is fine:

* http://www.shlomifish.org/Files/files/images/chickpeas.xcf.bz2

* http://www.shlomifish.org/Files/files/images/chickpeas-from-xcf.png

* http://www.shlomifish.org/Files/files/images/chickpeas-from-xcf.jpg

The SHA-256 sums for them are:

cbb78ae42b96b2aa85ebce7ed6cc6e2378d13562b6076673df8edb57f6ad2f20 chickpeas-from-xcf.jpg

a4a5dd3512b0b89f476647e287a4f18359bc99af9f06776c6a933ae7c4e7fd8d chickpeas-from-xcf.png

1f9b974716bda9f8374be083c044623bf3277e7f7fd3f95b56633b98354ccc20 chickpeas.xcf.bz2

Can you give an example of a JPEG file that your television views properly?

Regards,

Shlomi Fish

Do you have an idea or information !?

Kind regards Stefan Rohde
Germany
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On Sun, Jan 31, 2016 at 10:44:17PM +0530, Mukund Sivaraman wrote:

Hi Stefan

On Sun, Jan 31, 2016 at 04:29:43PM +0100, Stefan Rohde wrote:

Dear GIMP-Team,
I can not display images that I have prepared and saved with GIMP 2.8.14 (under Windows 10) in jpg-format on my TV or via a digital box (WD TV). On my PC its no problem!
The Thumbnailes can be seen but the images can not be read! I have also tried several setting for the jpg-saving.

Other images I prepared with former versions are working well!

Do you have an idea or information !?

Can you create a GIMP bug ticket on bugzilla.gimp.org and attach a sample JPEG image that is broken?

Sorry that's https://bugzilla.gnome.org/

Mukund

Am 31.01.2016 um 16:29 schrieb Stefan Rohde:

I can not display images that I have prepared and saved with GIMP 2.8.14 (under Windows 10) in jpg-format on my TV or via a digital box (WD TV).

Do you have an idea or information !?

It's most likely the Progressive option in the advanced part of the JPEG export dialog.

Regards,
Michael
GPG: 96A8 B38A 728A 577D 724D 60E5 F855 53EC B36D 4CDD

Yes it's almost certainly the bug that won't get fixed raising it's ugly head again: https://bugzilla.gnome.org/show_bug.cgi?id=723153

Kevin

From: gimp-developer-list  on behalf of Michael Schumacher 
Sent: 31 January 2016 20:31
To: gimp-developer-list@gnome.org
Subject: Re: [Gimp-developer] Problems with JPG?!

Am 31.01.2016 um 16:29 schrieb Stefan Rohde:

> I can not display images that I have prepared and saved with GIMP 2.8.14
> (under Windows 10) in jpg-format on my TV or via a digital box (WD TV).

> Do you have an idea or information !?

It's most likely the Progressive option in the advanced part of the JPEG
export dialog.


--
Regards,
Michael
GPG: 96A8 B38A 728A 577D 724D 60E5 F855 53EC B36D 4CDD

On Sun, 31 Jan 2016 22:22:55 +0000, Kevin Payne wrote:

Yes it's almost certainly the bug that won't get fixed raising it's ugly head again: https://bugzilla.gnome.org/show_bug.cgi?id=723153

Manufacturers simply aren't going to fix their firmware, particularly for older devices (read: are already on the market). And it's possible that a firmware fix wouldn't even be enough, since printers would need more memory to buffer the entire image rather than just reconstituting it one row of blocks at a time. There's also the added testing expense. Phones and cameras don't generate progressive JPEGs, so printer, TV, etc. manufacturers don't have any real incentive to support them. The manufacturers probably don't even write their own firmware; they contract it out.

Progressive JPEGs are nice for displaying big images in browsers over slow links (which my 1500/368 DSL qualifies as). I admit that they're easier for me in that context. But given the confusion this is causing, and that it requires non-trivial knowledge (and tools) for people to fix after the fact, I'd argue that this should be revisited.

________________________________________ From: gimp-developer-list on behalf of Michael Schumacher Sent: 31 January 2016 20:31
To: gimp-developer-list@gnome.org
Subject: Re: [Gimp-developer] Problems with JPG?!

Am 31.01.2016 um 16:29 schrieb Stefan Rohde:

I can not display images that I have prepared and saved with GIMP 2.8.14 (under Windows 10) in jpg-format on my TV or via a digital box (WD TV).

Do you have an idea or information !?

It's most likely the Progressive option in the advanced part of the JPEG export dialog.

Robert Krawitz                                     

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