It's a simple tool which is great for many things, it has filters and there are most of the formats. I think it uses ffmpeg under the hood.
It's an old tool but it's fine for most things, when ffmpeg is to fastidious to use. ffmpeg is still what I use, but some more complex tasks are just more comfortable with avidemux.
Some of the simple tools might not be using ffmpeg per se, but using the libav or similar libraries. ffmpeg is just a tool built to utilize the functionality of multiple libraries like this.
No, ffmpeg itself is a pretty small wrapper around them. But the rest are true libraries and not frameworks, so you have to make all kinds of playback decisions yourself. A/V sync is hard.
It's a simple tool which is great for many things, it has filters and there are most of the formats. I think it uses ffmpeg under the hood.
It's an old tool but it's fine for most things, when ffmpeg is to fastidious to use. ffmpeg is still what I use, but some more complex tasks are just more comfortable with avidemux.