For example, update a video file with a new mix, resulting in a single new MOV file.
*This will work on OSX, Windows, Linux – as long as ffmpeg has the codecs for the files you wish to work with.
Steps:
1. Open Terminal
2. Navigate to the directory where your media is (makes the command easier to parse visually)
1 2 3 4
#mapping outputs
ffmpeg -i video.mov -i audio.wav -c:a copy -c:v copy -map 0:v:0 -map 1:a:0 output.mov
#when there is no audio in the video file, converting audio to aac
ffmpeg -i video.mov -i audio.wav -c:v copy -c:a aac output.mov
keys: -i indicates input file (there are two, so it is used twice) -c:a indicates AUDIO CODEC command, which in this case is COPY (no trans-coding) -c:v indicates VIDEO CODEC instruction, same usage as above -map 0:v:0 instructs to copy the video of the first input to the output (0 is first, 1 is second, 2 is third…) -map 1:a:0 instructs to copy the audio of the second input to the output.
