animated-gif | 易学教程

How to show a specific frame of a GIF image in C#?

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问题 I want to show a frame of a gif image. I searched and found that the following code should work, but it doesn't work. it detects the number of frames correctly but it shows the whole frames of gif instead of the specified frame. thanks everybody. Image[] frames = new Image[36]; Image GG = Image.FromFile(@"C:\Users\Administrator\TEST C#\TEST2frame2\chef.gif"); FrameDimension dimension = new FrameDimension(GG.FrameDimensionsList[0]); // Number of frames int frameCount = GG.GetFrameCount

Animated GIF in Firemonkey

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问题 I'm trying to display an animated GIF in a Firemonkey HD form using TImage but I do not see any methods for animation. Using Vcl.Imaging.gifImg is not an option because types differ. Can someone suggest a way to solve this problem or probably component to animate GIF images under Firemonkey? The only way I find for now is: create TGIFImage instance and load the GIF image loop through gif.images: a. save current image to stream b. Image1.bitmap.loadFromStream [Image1 is FMX:TImage] Is there

How to estimate GIF file size?

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We're building an online video editing service. One of the features allows users to export a short segment from their video as an animated gif. Imgur has a file size limit of 2Mb per uploaded animated gif. Gif file size depends on number of frames, color depth and the image contents itself: a solid flat color result in a very lightweight gif, while some random colors tv-noise animation would be quite heavy. First I export each video frame as a PNG of the final GIF frame size (fixed, 384x216). Then, to maximize gif quality I undertake several gif render attempts with slightly different

Loading animated GIF in JLabel weirdness

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问题 I'm trying to load an animated GIF in a JLabel. While this works: URL urlsd; try { urlsd = new URL("http://pscode.org/media/starzoom-thumb.gif"); ImageIcon imageIcon = new ImageIcon(urlsd); JLabel progress = new JLabel(imageIcon); progress.setBounds(5, 20, 66, 66); contentPane.add(progress); } catch (MalformedURLException e) { e.printStackTrace(); } This, on the other hand, does not, and I don't want to get the GIF from an URL, since I already have the GIF. Result of loading this shows only

Is it possible to set an animated gif file as background of my app in android?

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I am doing app for Jewellery shop I want to set a gif image as background of my app. Is it possible to set? Yes, you can set the gif image but this will not animate your gif image. You need to explicitly extract the gif image into all frame and then using animate you image as gif here is the example of <animation-list xmlns:android="http://schemas.android.com/apk/res/android" android:oneshot="false" > <item android:drawable="@drawable/framelayout1" android:duration="1000"/> <item android:drawable="@drawable/framelayout2" android:duration="1000"/> <item android:drawable="@drawable/framelayout3"

How to decode the application extension block of GIF?

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How to decode the application extension block of GIF? 0000300: 73e7 d639 bdad 10ad 9c08 b5a5 0021 ff0b s..9.........!.. 0000310: 4e45 5453 4341 5045 322e 3003 0100 0000 NETSCAPE2.0..... 0000320: 21f9 0409 1900 f600 2c00 0000 0016 01b7 !.......,....... this " 21 ff0b s..9.........!.. 0000310: 4e45 5453 4341 5045 322e 30 " is known, but what is " 03 0100 0000 "? dragon66 The following describes GIF Netscape Application extension, taken from here . The block is 19 bytes long. First 14 bytes belongs to general Application Extension format, syntax is described in GIF89a Specification, section "26.

How to determine the length of a .gif animation in milliseconds

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Is there an easy way to figure out approximately how long a .gif image takes to play one time in Javascript? The identify command from ImageMagick can give this information: $ identify -verbose file.gif | grep 'Elapsed time' Elapsed time: 0:01.080 Elapsed time: 0:01.150 Elapsed time: 0:01.230 ... Elapsed time: 0:04.250 Elapsed time: 0:04.330 Elapsed time: 0:04.399 Elapsed time: 0:04.480 The last line printed should be the total length of the animation. Prinzhorn The accepted answer doesn't give the exact result. Elapsed time is like a real world clock while ImageMagick runs the animation. What

Is it possible to set an animated gif file as background of my app in android?

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问题 I am doing app for Jewellery shop I want to set a gif image as background of my app. Is it possible to set? 回答1: Yes, you can set the gif image but this will not animate your gif image. You need to explicitly extract the gif image into all frame and then using animate you image as gif here is the example of <animation-list xmlns:android="http://schemas.android.com/apk/res/android" android:oneshot="false" > <item android:drawable="@drawable/framelayout1" android:duration="1000"/> <item android

fix frame rate of animated gif in Java

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问题 I'm making a Java app that displays certain GIF files from a folder. I'm currently using the code final JLabel imageLabel = new JLabel(); imageLabel.setIcon(new ImageIcon(fileName)); contentPane.add(imageLabel, java.awt.BorderLayout.CENTER); This works flawlessly, except that many (thousands) of my .GIF files have a misconfigured frame rate which makes them display at infinite speed (frameDelay=0), assuming that the browser will fix this automatically. Java does not do this by default. How

Android animated GIF (Cupcake)

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问题 I've used animated GIFs in Android pre cupcake however my old code no longer works. To be exact: Movie.decodeStream Always returns null... Does anyone have any workarounds/fixes to play animated GIFs? 回答1: There's a bug report for this. Looks like the only option currently is to split it up and do frame-by-frame animation manually. There's instructions in the docs for how to do this. 来源： https://stackoverflow.com/questions/1383246/android-animated-gif-cupcake