APNG read support…

[xnview]

THIS PAUL'S SAMPLE - also a 8-BPP which worked alright with ß-2-

I'm not sure that this sample is correct. The picture size changed for every frame (normal), but without x/y offset

[Clo]

Pierre

Hello !

• Like Paul says, it worked in ß-2, I can confirm that.

- From a simple A-GIF template I have made a while ago about different frame-sizes,
Paul made another sample in the same way, and I get the same issue. It's available HERE.

• Testing this, I noticed that there's a when switching an animated image, even a GIF :

1. “View” >> “Browser” —> The animation works in the “Preview”, good.
2. “Browser” >> “View” —> The animation no longer works in “View, it's locked on a single frame.
3. “View” >> “Browser” —> The animation no longer works in “Preview”.
- It doesn't matter whether the animated images have different frame-sizes or not,
it occurs also with GIFs having all frames equal at W¦H.
- Continuing that loop leads to land in a quite empty browser for several seconds, with a pre-crash look.
- I optimized the cache, that doesn't improve the display.
- You must display a Next or Previous image in “View” or in “Browser” to break that loop.

KR
Claude
Clo

[xnview]

• Like Paul says, it worked in ß-2, I can confirm that.
- From a simple A-GIF template I have made a while ago about different frame-sizes,
Paul made another sample in the same way, and I get the same issue. It's available HERE.

Yes, your samples works if i authorize different frame size in the APNG, but then this sample doesn't work anymore!

Unoptimized PNG animations play back nicely, but I can't view samples that were shrunk in size using “Dirty Rectangle” optimization:

• clock-noopt.png vs. clock-opt.png

In your 2 samples, you have no X/Y offset, and i think that it's an error!

[Clo]

Pierre

Hello !

…In your 2 samples, you have no X/Y offset, and i think that it's an error!

• What can we do against that ? The frames are mounted in GifMovieGear (beta),
there's almost not any other programme to do that…
… the best being (later, later…) to have a plugin¦tool in XnView to be sure that the build is correct…

• What about the issue in Preview <—> View like I told above ?

KR
Claude
Clo

[xnview]

…In your 2 samples, you have no X/Y offset, and i think that it's an error!

• What can we do against that ? The frames are mounted in GifMovieGear (beta),
there's almost not any other programme to do that…

So there is a problem in GifMovieGear. I'll try

• What about the issue in Preview <—> View like I told above ?

It's the same problem...

Do you have tried APNG editor?
http://littlesvr.ca/apng/apngedit.html

[Clo]

Again…

Do you have tried APNG editor? …

• Paul knew it, it's a FireFox extension, and I don't use FireFox…

- The Preview - View problem occurs too in folders containing A-GIFs only,
that worked alright in old versions (checked in 1.82.4 and 1.90 alpha 3).

KR
Claude
Clo

[xnview]

- The Preview - View problem occurs too in folders containing A-GIFs only,
that worked alright in old versions (checked in 1.82.4 and 1.90 alpha 3).

I can't reproduce it.
The browser is opened in a folder with animated GIF or PNG, i open a file, and i have animation

[Clo]

Pierre

You must do that handling several times with the same image,
here I have set LMB double-click to switch View <—> Browser
- Under XP-Pro SP1

- I prepared a video AVAILABLE HERE as a RAR archive.
- Please, notice that there are GIFs only in the folder !

KR
Claude
Clo

[ouistiti]

Pierre

I can confirm, according to the Clo's video - and indeed making the operation several times for the same image

Regards

Paul

[xnview]

Pierre

You must do that handling several times with the same image,
here I have set LMB double-click to switch View <—> Browser
- Under XP-Pro SP1

- I prepared a video AVAILABLE HERE as a RAR archive.
- Please, notice that there are GIFs only in the folder !

KR
Claude
Clo

Your video is not available???

But i think that i have reproduced it. But it's normal, and works like 1.91.6

[Clo]

Pierre

Hello !

• Indeed my vidéo IS available from the link above.

- I don't think that such a behaviour is normal, that worked properly in old versions.
- I mean that the animation was not stopped the second time and following
when displaying the same image successively in “View” and “Browser”, that I do and need so often…
- I'll test in the ß-4…

KR
Claude
Clo

[xnview]

- I don't think that such a behaviour is normal, that worked properly in old versions.

I have the same behaviour in 1.96.4

[Clo]

Pierre

Hello !

• When I say old versions, I mean i.e. 1.90.x, 1.82.4, 1.80.3 where the animation restarts alright at least in “View” !

• Like I said in previous messages…

KR
Claude
Clo

[XnTriq]

In your 2 samples, you have no X/Y offset, and i think that it's an error!

• What can we do against that ? The frames are mounted in GifMovieGear (beta),
there's almost not any other programme to do that…

So there is a problem in GifMovieGear. I'll try

• What about the issue in Preview <—> View like I told above ?

It's the same problem...

Do you have tried APNG editor?
http://littlesvr.ca/apng/apngedit.html

The two files I linked to (clock-noopt.png & clock-opt.png) are samples from Justin Dolske's Animated PNG demos page. He's the guy who wrote the APNG Editor extension for Firefox. Accoding to an entry in his Mozilla Labs Blog, GIF Movie Gear was used for neither compiling nor optimizing the animation(s):

The first version of the clock animation resulted in a rather large file (about 450K) because each frame was a complete rendering. I wrote another script to optimize each frame by only encoding interframe differences, which knocked the size down to 79K. I could also make easy adjustments to the dimensions or frame count, by simply adjusting the script parameters and re-rendering the animation.

[Clo]

Pierre

Hello !

• The animation restarts in 1.92 final, thanks !

KR
Claude
Clo