Uploaded May 2019 | Updated September 2026, 50 minutes ago

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FFMPEG Add Audio to Video - Single and Multitrack
How to add one or many audio tracks to a video using ffmpeg.
In this video we go over how to add audio from an mp3 file source or from a video source and copy the audio over to a new video that doesn't have an audio track.

We follow on by adding a second audio track to a video making it a dual audio track movie and changing the order of the audio tracks within the video.

Finally we change which audio track is marked as default, this has the effect of being the audio track that video player chooses to play.

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