Why are my AVI files corrupted when saved on a computer running Vista? When
I try to use a Vista-type icon with PNG compression in my .NET/WPF-based
app, I get an error trying to extract the icon. How do I fix this? My animation has a transparent background, and when it plays, the previous frames show through. How do I make the previous frames go away?
Note: the "Restore to Previous" removal method, while potentially very useful is not implemented properly in Netscape browsers. It is recommended that you avoid it for this reason. XP Icons: When I load my 4-bit images, they show up as 8-bit images and won't properly save in the icon file. How do I fix this? First make sure that you are running Version 4.0 or later of GMG (look in Help>About). If not, download the latest from here. You will need this version to make sure that GMG recognizes Windows 4-bit images. The term "4-bit" color is not entirely appropriate. This color resolution implies that the color table is composed of the 16 EGA colors (each of R, G, and B is either 0, 128, or 255 plus a single light gray at 192,192,192). Reducing a color table to an arbitrary 16 colors won't do the trick: the result will still be treated at 8-bit. Get a Photoshop 16-color CLUT here. If the image loads as 4-bit and then "becomes" 8-bit once other images are loaded, go to Edit>Preferences>Palettes and make sure that "Local Palettes" is checked. This will ensure that no palette mapping takes places are images are loaded. How do I convert a GIF animation to an AVI? GIF Movie Gear can save animations out in several formats, including the AVI format, a video format commonly recognized by Windows presentation applications. To "convert" an animation into AVI, do the following: a) Load the animation into GIF Movie Gear How do I register my copy of GIF Movie Gear? Find out more about ordering GIF Movie Gear on the Order page. How do I speed up/slow down my animation? The speed of a GIF animation is controlled by the delay defined for each frame. The delay is expressed in 1/100th of a second, so a delay of 100 will take one second. During playback, the frame is viewed for the amount of time in its delay. There are several ways to set a delay: a) Select the frame and enter a delay number in the second toolbar, next to the little clock New for Version 3.0 and later: Can I attach sound to my GIF animation? Unfortunately the GIF file format has no provisions for including sound with an animation. The alternative of adding the sound to the Web page isn't helpful because there is no way to synchronize the animation and the sound. One possible solution is to use the AVI format since it is designed to store both animation and sound, though AVIs are not played inline like GIF animations are. GIF Movie Gear has extremely basic support for adding audio to a video file: you will see the option when saving to AVI. You will want a full-on video editor for anything fancy, like editing the audio in any way. How do I save a transparent AVI? The AVI format does not support transparency. If you are building an AVI to place in a Windows control and want it to play with a transparent background, you need to make use a special workaround that is supported by Windows: the color of the first pixel (upper left) of the first frame in the AVI is used as the transparent color when the transparent style (ACS_TRANSPARENT) is used for the Windows control. So if you build the AVI carefully you can get it to play "with transparency" in a Windows control. Microsoft has a knowledgebase article about this topic (specific to MFC but usable in any Win32 app). My animation plays incorrectly in my browser. What's going on? This could be the result of either a problem in the animation or, more likely, an incompatibility with the browser in question. Please check the Browser Issues section below to see if you've stumbled across a known browser issue. If your problem does not show up here, please contact us and include the URL of the animation along with a description of what you are seeing vs. what you expected to see. When I try to export to an AVI I get an error: "Unable to AVI open <filename>. Error 0x80040154." What did I do wrong? This error is caused by an incomplete installation of the AVI system built into Windows. This can be fixed by running a small Windows Registry patch. There is one for Windows95 and one for Windows98. Click on the appropriate link to download it and then "run" it. The files contain the missing Windows Registry info that is needed for the Windows AVI handler to work properly. No software is perfect, and Web browsers are no exception to this rule. Over the past few years as the Web has developed, popular Web browsers have been inadvertently released with some, um, limitations, in the way they handle GIF animations. The result is that a Web designer, working with pages that will be viewed using a variety of browsers, needs to be aware of things that might not work properly on some viewing setups. Below is a list of some of the bigger issues. "Netscape Navigator" is referred to as "NS" and "Microsoft Internet Explorer" is referred to as "IE".
|