8/16/2023 0 Comments Gifsicle overlay gif![]() I am not sure what GifSicle is doing, but I think that Cloudinary's behavior here – preserving the disposal settings from the original gif passed to it – is correct, and the iOS code is definitely not respecting the disposal values present in the GIF. With these settings, every frame is supposed to be painted on a blank canvas. Note that disposal happens on a per frame basis.īoth of the files that you sent have every frame set to disposal value "3" here – restore to previous. As you said, this file displays fine in a browser so we will need to evaluate this particular use-case. I'm guessing you would want Cloudinary to respond with an "unoptimized" GIF (0)? Same as you produced with GIFSicle?īy default we are targeting browsers and are making sure files are as small as possible without losing quality. What was there prior to rendering the graphic. Restore the area overwritten by the graphic with Graphic must be restored to the background color.ģ - Restore to previous. The graphic is to be leftĢ - Restore to background color. Here is an excerpt from : iv) Disposal Method - Indicates the way in which the graphic is to The GIF format supports several disposal methods (as you might know). Is the complaint then that Cloudinary does not produce a GIF that is correctly rendered in your iOS code? Are you seeing different "ghosting" effects when using the original URL vs. This url and this produce exactly the same file as far as I can see. cloudinary url: (that's an example, parameters doesn't have any impact) ![]() It does not have a ghosting effect right now (it had a little ghosting effect before, but I processed it via GIFSicle - I used except for `transparent` and `02` options) What's interesting, when I display one random frame from an array of frames as static image, it has a ghosting effect too. Passed frames parameter (images) is calculated via extracting gif data using Image I/O (CGImageSourceCreateImageAtIndex to create images and kCGImagePropertyGIFDictionary to get delays). What interests us the most is `getFramesAnimation` method. I need to embed a gif inside a video, so I use a technique similar to: . Option 3: if you're ok with online tools and your GIF does not exceed 20MB, this online tool can cut GIFs by frame number or by time and won't affect the quality.1. It's also available in apt.įFMPEG accepts time directly, so it's very straightforward, but it may worsen the quality of output gif and increase file size in some cases. gifsicle YOURFILE.gif '#XXXX-YYYYY' -O3 > cut.gif Replace XXXX with the frame where you want your GIF to start, and YYYY with frame where you want your GIF to end. Then you can divide the time you want to cut with the frame delay and it will give you the number of frames in this time, so you can figure out start frame and end frame. You can view the total number of frames and delay times between each frame with this command: gifsicle -info YOURFILE.gif It's fast and won't affect the quality, buy it only accepts frame numbers, not time, so if you need to cut exact time, you should figure out the frame number yourself. ![]() It's available in default Ubuntu/Debian repositories. Option 1: Use a command line tool called gifsicle.
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