是否有创建电视静态动画gif的技巧，可以使其相对较小? [英] Is there a trick to creating an animated gif of tv static that will allow it to be relatively small?
问题描述
提前道歉，但这实际上不是photoshop的问题.相反，我正在尝试提出令人信服的内容，但应尽可能利用gif格式的压缩和功能，以为动画制作尽可能小的文件.
Apologies in advance, but this isn't really a photoshop question. Rather, I'm trying to come up with something that is convincing but exploits the compression and features of the gif format as best as possible to produce the smallest possible file for the animation.
一些约束:
- 它至少应为20或30帧.我尝试了更少的尝试(由于它们基本上不可压缩，因此15帧通常只有30帧的大小的一半)
- 尺寸必须不小于256x192
- 尽管它不必是彩色的，甚至也不必是全灰度的.我见过令人信服的剧照，其中只有16种灰度
- 它可以有一个图案，但是没有一个人眼可以立即看到的图案.如果某人拍了一张照片，一两分钟后就可以发现花样(这使其可压缩?)就可以了
- 第2帧到第n帧可以使用相当多的alpha，但是当我开始使用较大的水平alpha条纹时，我的眼睛立即看到它.因此，您不必通过简单的作弊就可以积累大量的RLE.
- 以上所有内容仍然需要在30-33ms的帧速下看起来不错.没有变速，也没有比它快得多的依赖.
也可接受:符合上述约束的apng.如果可以的话，甚至可能是mpeg(我不知道DCT如何发挥其魔力).
Also acceptable: an apng that complies with the above constraints. Possibly even mpeg, if you can come up with that (I'm ignorant of how the DCT does its magic).
理想情况下，我可以将数据压缩到250kbytes范围之内，但我选择的解决方案要比我上周烹制的9兆怪兽大得多.
Ideally I could get something down in the 250kbyte range, but I'd settle for anything significantly smaller than the 9 meg monstrosity I cooked up last week.
哦，还有最后一件事:显然我不希望有人为我提供图形.我只是在寻找一些技巧，这些技巧最终将使我自己到达那里.
Oh, and one last thing: obviously I don't expect anyone to supply the graphic for me. I'm just looking for some trick(s) that will let me get there myself eventually.
推荐答案
比较老旧但仍未得到答案的答案(始终未选中)
Well old but still unanswered answer (not checked anyway)
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因此创建NoSignal图像数据
如果不清楚，该如何阅读:
If it is not obvious how read this:
编码为gif
已经玩了一点，所以我使用了分辨率320x240，可用的最低位分辨率是每个像素3 bit.较低的看起来不好.仅单个全局调色板(显而易见)，此处为300KB示例
Had played with it a bit so I used resolution 320x240, the lowest bit resolution usable is 3 bit per pixel. Lower does not look good. Single global palette only (obvious) here 300KB example
[注释]
如果这仅用于某些应用程序，则在运行时生成图像，实际上只是几行代码，即可在项目符号#1
if this is just for some app then generate the image on the run it is really just few lines of code see that linked answer in bullet #1
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