AWK tutorial: awk workflow

AWK follows a simple workflow − Read, Execute, and Repeat. BODY block This block is the core of the awk command. It consists of three...

ffmpeg video to image

- specify video time interception image - Output one image every second - Output one image every minute - use the select filter for a set of custom...

fmpeg -filter_complex move image

- Image move from bottom to top in videos - Video with image in the middle - Start zooming in the middle of the picture - Using ffmpeg...

How to store numbers in Javascript

We know that all numbers in Javascript are stored in 64-bit format IEEE-754, also known as “double precision”,whatever the types int or float. When you...