I was trying to compile an FFmpeg example code HERE that illustrates how to use filters using it's C APIs.
I compiled the code (throuh a universal
make). As the usage suggests, I'm doing this:
But it produces some jumble output on the screen. I was expecting it produces an output
.mp4 file that can be played.
How to run it correctly?
And does it work with any given video filter that is passed to FFmpeg through
-vf, if I simply change the filter description specified?
const char *filter_descr = "scale=78:24,transpose=cclock";