我应该使用哪个图像处理库来创建视频幻灯片？ [英] Which image processing library should I use to create a video slideshow?

问题描述

看起来像 FFmpeg 和 MovieMaker库将从一组图像创建幻灯片影片。哪个最好？有没有更好的选择？

It looks like both FFmpeg and the MovieMaker library in Processing will create a slideshow movie from an array of images. Which is best? Is there a better option?

我需要输出一个要上传到第三方网站的视频，所以我想在设备上执行，需要一个真实的视频不仅仅是一个画廊的幻灯片。

I need to output a video to be uploaded to a 3rd party website so I'd like to do it on device and it needs to be a real video not just a gallery slideshow.

推荐答案

FFmpeg 是一个很好的选择。我自己做了很多次， 时间推移摄影实验 即可。

FFmpeg is a great option. I've done it many times myself with time lapse photography experiments.

1. 使用x264 CODEC安装FFmpeg


2. 将所有幻灯片从0001.jpg开始编号>
   
3. 如下所示运行FFmpeg （这是我用于我的图像 - >视频转换）：

1. Install FFmpeg with x264 CODEC
2. Number all your slides starting at 0001.jpg
3. Run FFmpeg like below (this is what I use for my images-->video conversions):

FFmpeg命令：

ffmpeg -f image2 -i %04d.jpg -vcodec libx264 -f mp4 -vpre main -vpre normal \
   -r 25 -an -threads 4 -b 3000k -mbd rd -flags +mv4+aic -trellis 2 -cmp 2 \
   -subcmp 2 -g 300 -y out.mp4

您可能需要修改命令行以获得所需的输出质量你正在寻找。另外，帧速率（ -r 25 ）可能太高了。或者用小值进行实验，或以编程方式复制幻灯片。

You may need to tinker with the command line to get the desired output quality you are searching for. Also, the frame rate (-r 25) is probably too high for you. Either experiment with small values, or duplicate your slides programmatically.

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