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?
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.
FFmpeg is a great option. I've done it many times myself with time lapse photography experiments.
- Install FFmpeg with x264 CODEC
- Number all your slides starting at 0001.jpg
- Run FFmpeg like below (this is what I use for my images-->video conversions):
FFmpeg command:
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
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.
来源：https://stackoverflow.com/questions/4857823/which-image-processing-library-should-i-use-to-create-a-video-slideshow