How to write bytes to video format?

Question

Java

Hello!
There is a whole video, I cut out the middle from it. As a result, I have an array of bytes, and when I write it to a file, let's say movie.flv - the file cannot be played.
How to write format, bitrate, fps to file along with bytes in java?

Answer 1

and Pushkin will add headings to a new file?
Open the format specs and see what's there and how!