How to reduce the resolution of a video using ffmpeg?

Question

I want to reduce the resolution of a video from 1024*768 to 800*600. I found on the web ffmpeg, and the library swscale (I use in C.

And I found some informations on the web, but nothing about how to reduce the resolution of a video nor about which functions to use

How can I do ?

Answer 1

See this or this example code. Use sws_getContext () to set up a scaler, and sws_scale () to convert one frame or slice.