no bug Selected GIF Animations Render Too Fast

[Prisoner416]

With the new gif update, almost every gif animates properly, however there are some problem files that render too fast. These same files load correctly in XP Picture Viewer and other programs.

Examples of gifs that render too quickly-

https://www.dropbox.com/s/6h71qrcughlee53/tumblr_lz16anyMBR1qcpydl.gif

https://www.dropbox.com/s/rbxra15vnvmb2kw/IEfpJ.gif

https://www.dropbox.com/s/d6wfvbtzj5kre4p/tumblr_lxr634FlRS1r1tacw.gif

https://www.dropbox.com/s/dm6h48csjey49qd/tumblr_m0sdqjrV9e1qf2pkdo1_400.gif

Running version 4.37.

Operating System
Windows XP Professional 32-bit SP3
CPU
AMD Turion 64 X2 Mobile TL-50 107 °F
Taylor 90nm Technology
RAM
2.00GB Dual-Channel DDR2 @ 321MHz (5-5-5-15)

Motherboard
Wistron 30B5

[Bhikkhu Pesala]

Confirmed. I have forwarded your report to Irfan Skiljan.

[Bhikkhu Pesala]

Wow! Irfan replied already:

These animations have timer set to 0 or 1, which means 0 ms or 10 ms => so they are fast because the creator saved them like that

In 4.37 is the minimum delay for GIFs: 10 ms ... in older version it was set to 100 ms, which was too slow for such fast animations.
Some other players have another minmimums, so the animation way look a little bit slower or different.

=> this is a clear mistake by the animation maker, he should better look and set proper values.

Sorry, there is NO bug, at least not in IrfanView 4.37

[Prisoner416]

Any way to fix the values, then? Or manually changing the speed within IrfanView, perhaps?

[Bhikkhu Pesala]

IrfanView cannot edit Animated GIF images.

Extract all of the frames, and rebuild the animation in FastStone Viewer.

[Prisoner416]

...sadly I have way too many to fix. I ended up installing FastStone viewer and linking it to .gif files.

I find it odd that Faststone and WIndows Default XP have no problem displaying them though, along with other gifs that Irfanview shows artifacts or glitches on. (Trying to find a SFW example of those). Seems there should be an industry standard for default timing.

[Mij]

...sadly I have way too many to fix......
Seems there should be an industry standard for default timing.

I think what Irfan has introduced is the industry standard. It is just that many programs do what Irfanview used to do and apply a maximum frame rate of 10 per second because of the heavy workload imposed by trying to display images faster.

I suggest that you download Photoscape and use the Animated GIF tab there to change the timing of your images from 1 to 10 intervals, which is probably what it should be. They will then run at the same speed in v4.37 as in the previous versions of Irfanview and the other programs that still do not support running at maximum rate. It only takes a few seconds per file in Photoscape. Just drag and drop the file into the window, change the timing setting and re-save.

[insectinegate]

Wow! Irfan replied already:

A sizeable number of my gifs are unviewable in irfanview- the devs think they're adhering to standards? Clearly these "standards" have a 50/50 chance of being adhered to in practice, and a good viewer should aim to be practical, not 'good in theory but useless in practice'. Defacto standard trumps whatever you think is 'correct'. As it is irfanview cannot be reliably set as the default gif handler.

Before this update, 1/10 gifs would play too slowly. This is clearly the lesser of two evils, although I don't understand why firefox can play every gif right every time, and all other image viewers struggle with it...

[gmosc]

I solved the problem by installing both version 4.38 and 4.36. I use the "open with external viewer" function for each of the programs and they link back to each other. When I browse a folder and run into a gif that was created improperly (running too fast or slowly) , I simply press shift 3 and the other instance of Irfanview opens.
To install Irfanview twice, first install a version and change the name of the installation folder to the version name, then install the newer version and give that installation folder the newer version name.
Remember that irfanview is portable so you can simply copy any version of Irfanview after it is installed. You go to the folder where it is installed and copy it to a thumb drive or a different location. If you change the name of the installation folder, each time you install Irfanview, you will always have the older versions available to yourself.
I agree with Irfan that this is not a bug in Irfanview, they are improperly formed gifs. But being able to view these improperly formed gifs is an advantage. If Irfan doesn't want to make any changes to his newer gif rendering routine within 4.37 and up, that's ok, I still have 4.36 which uses his older rendering routine which works on older gifs.
I also have Faststone which views gifs like 4.36, but I prefer using Irfanview.
I hope that my work around might be helpful and helps people from going to another viewer.