Install FFmpeg with homebrew. You'll need to install it with a couple flags for webm and the AAC audio codec.
brew install ffmpeg --with-libvpx --with-libvorbis --with-fdk-aac --with-opus| #!/bin/bash | |
| VIDEO=$1 | |
| AUDIO=$2 | |
| DATE=`date +%Y-%m-%d.%H:%M:%S` | |
| OUTPUT="Output_"$DATE".mp4" | |
| ffmpeg -i $VIDEO -i $AUDIO \ | |
| -c:v copy -c:a aac -strict experimental \ | |
| -map 0:v:0 -map 1:a:0 $OUTPUT |