I have a (random selection) of JPG images that I want to use to make into an APNG animation using ffmpeg (to test the process). They are all the same dimensions (256x256). But I cannot seem to get the correct syntax to control the frame delay and…
So apparently APNGs fall back to the first frame for unsupported browsers
But is there a way to make it fall back to a gif in unsupported browsers, like we do for webP?
An APNG file specification for reference: https://wiki.mozilla.org/APNG_Specification
num_plays defines the number of times than an animated PNG should loop. 0 is a special value that means the animation will loop indefinitely.
I found some APNGs…
PyPNG, the most widely used PNG library for Python, doesn't seem to support animated PNGs. There's a library for writing animated PNGs, but I can't find an equivalent one for reading them. Anyone know a way of getting the frames out of this little…
Looking at the APNG spec, it seems that APNGs are PNGs which describe the frames after the first in their "extra" chunks". So it seems like it'd be feasible to create APNGs in Javascript easily by just compositing PNG headers and appending dataURIs…
I would like to insert an animated image to a blog and a forum (hence I can't use javascript, CSS, SVG, HTML5 and other tricks), but the gif animation is too big, about 700K. It was made of a photo, so I can't reduce the colours below 256 palette…
Is there no way to play an apng file directly in iOS?
I tried AVAnimator, but its solution is to convert the apng file to mvid and then play it frame-by-frame and then to reduce file storage space, it would compress the mvid file into 7z.
So, my…
I'm trying to implement animated textures into an OpenGL game seamlessly. I made a generic ImageDecoder class to translate any BufferedImage into a ByteBuffer. It works perfectly for now, though it doesn't load animated images.
I'm not trying to…
I have an APNG animation with several frames, and it happens that some frames are exactly the same. Each of those frames are carrying its own image data in the file, where they could be just reusing the image data of a prior frame that is equal and…
APNG files dont have any clear way to detect them. For APNg unawware applications they appear as normal PNGs, and they will show the first screen. Detecting them is a bit of a hassle.
I have inherited a legacy project containing some 20+ apng files that are considered instrumental to the design of the site. However, for whatever reason, safari plays these apng files twice where every other browser I have tested them in plays only…
I'm having a hard time understanding how palette information is handled in APNG anims that use type PNG_COLOR_TYPE_PALETTE because apparently, there is little to none documentation.
All PNG_COLOR_TYPE_PALETTE test animation files that I have here…
Any way to count APNG frames in JS, in the browser?
For a script that tinkers iteration count and interactivity, I'd like to determine from a given APNG file how long a single iteration of its animation takes. I assume that's not explicitly written…
I have these APNGs on my art portfolio website. They look fine on desktop Safari, but occasionally flicker (changes in color and parts of the APNG disappear) in safari on iOS.
https://artadriana.com/alison
Another person also viewed it on mobile,…
Using UPNG.js, I get black instead of transparent color. How do I get things right?
Have no idea where to start
saveAPNG() {
const arrAnimationSpeed = new Array(this.arrayBufferData().length);
…
