Extract a still frame

The following uses ffmpeg to compress a video that is optimally compressed for size while keeping an ok quality, and ensures compatibility across 99.99% of the Android and iOS devices.

Usually very straightforward, ffmpeg picks the output format using the file extension. Wave to mp3, 5 seconds only, 128kb/s, is:

FFMPEG is a great tool for doing anything programmatically with audio or video files, but the default installation contains only open standards, and is therefore utterly incapable of converting AAC files and other common standards. Time to build it ourselves!

To combine a series of images (PNG or JPEG) into a video, use the following. There is a more standard way to select the images by numbering them in a specific way, but the following makes it easier to work with wildcards without having to rename the images.

Gets the MD5, SHA1 and SHA256 of a keystore. You’ll need this for many signin solutions, such as Google SignIn, Facebook, Twitter, etc.