This FFmpeg cheat sheet consists of a command-line example reference that we find useful at Kinvolk. Consult the complete FFmpeg documentation for more information.
Cut a section from a video using a start (-ss) and end (-to) timestamp and saving the extracted video to output.mp4 and retaining all audio and video settings (-c:v copy -c:a copy), meaning there is not transcoding.
ffmpeg -i input.mp4 -ss 01:19:27 -to 02:18:51 -c:v copy -c:a copy output.mp4
Android has a unique memory management model. Below, are the notes taken while we try to understand it thoroughly.
The ActivityManager, among other things, is responsible for making sure that apps that are most important to the user and/or essential remain active. It does this by dynamically assigning values that roughly indicate the app's importance. When memory gets low these values are used to find the apps that need to be "trimmed." The memory from these "trimmed" apps is freed, making more available for the more important apps.