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Questions tagged [apng]

Related to reading/writing Animated Portable Network Graphics (APNG) files.

APNG is supported natively in Opera and via plugins in Firefox and Chrome. svg2png can be used to convert SVG files with SMIL animation to APNG.

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Getting metadata of an APNG image

I am trying to get the metadata of an apng image at the moment. I have been able to get different frames from one apng file flawlessly and i am using PNGJ (a really great Standalone Java library for reading and writing PNG images), but I am not able…
chossen-addict
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extracting png files from APNG in java

I have been trying to extract all the png files from an APNG file. i have looked for help and well there isnt much. All i could find is a open source library pngj and with it i am able to get the first frame of a APNG file. Here is the code i am…
chossen-addict
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Can the latest openlayers render the animated marker using gif/apng/webp?

According to this QA, by using "gifler" library, we can use animated gif to render on canvas-based openlayers. can openlayers 3 render the animated marker using gif But it cannot accept apng/webp, and also, "gifler" library is bit old, it is tough…
kochizufan
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Disable Animated PNG from animating in an html page

I'd like to stop an animated PNG from playing on my html page, and be frozen on the first frame. Any ideas to do this would be appreciated.
Ghajik
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Download and view animated media on local PC

If I visit https://tlgrm.eu/stickers/JohnnyBravo#view-1 and just right click and download animated sticker, when I double click to view in Chrome Browser (or local photo editor) it is not animated. I tried to save the image as .apng, and .webp and a…
Uncle Iroh
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What these FFmpeg APNG encoder prediction methods mean?

By typing ffmpeg -h encoder=apng, I get this: APNG encoder AVOptions: -dpi E..V..... Set image resolution (in dots per inch) (from 0 to 65536) (default 0) -dpm E..V..... Set image resolution…
Nicke Manarin
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Q: How to remove noise that occurs when animating png with blur

I've tried to make animation preview of apng with apng-js. And I would like to apply gaussian blur with CanvasRenderingContext2D.filter like ctx.filter = "blur(0.8px)"; The blur working well but I saw some noise on the edge. I'm wondering how to…
Kazushi Hirai
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Video with transparent back

I’m creating a project for the browser on a Samsung info screen (55”) and I have to show different videos with transparent backgrounds (e.g. smoke) over text. I’ve tried with a webm format but the browser only shows the mask, not the actual movie. I…
Kasper Gantzhorn
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Same PNG causing two different images

I found an image (png) which is able to change it's content "dramatically" and I wonder how this works: This is how the image looks like in Windows: This is how the image looks like in Chrome: [ Original Image: About the source of the image: I…
RajmondX
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Download APNG File

I am getting some issues related to APNG file, APNG file animation working perfect if i put APNG files in resource bundle , But when i have download same APNG file from assets server and saving APNG file into resource directory and then load using…
Shauket Sheikh
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Using animated PNGS in mobile app

I'm creating a mobile app using html, css and jquery and packaging through phonegap. some parts of the app require animations, I decided to do this through gifs as what I wanted was too hard to animate through css. However the quality of gifs with…
andrea
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How to perform 'SKIP'/'SEEK' action in libpng with apng patch

I am trying to port libpng/apng to Android platform, using libpng with apng patch to read animated png file. My question is that I didn't find any 'skip' method declared in png.h. What I want to do is like to directly jump to a specific frame. But I…
Robin
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Library for creating animated png

I am looking for an APNG encoder in native c#, that does not rely on c/c++ libraries. So far I have only found a few readers and I'd like to avoid writing that library myself if possible.
Darcara
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