====== ffmpeg - Muxing - Mux the video from input0 and audio from input1 ======
ffmpeg -i -i -c copy -map 0:0 -map 1:1 -shortest
**NOTE:**
* **-c copy** copy the streams, not re-encoded, so there will be no quality loss.
* **-map** designates one or more input streams as a source for the output file. Each input stream is identified by the input file index.
* **-shortest** will cause the output duration to match the duration of the shortest input stream.