How to quickly merge audio and video files with FFmpeg

Опубликовано: 26 Июль 2026
на канале: Mux
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This is a technical tutorial demonstrating how to use ffmpeg command line to either replace or add foreign language audio tracks to videos, specifically showing two use cases: replacing English audio with French, and adding French audio as a secondary track alongside the original English.

Read the step-by-step of this process: https://www.mux.com/articles/merge-au...

Connect with Mux (video apis):
Website: https://www.mux.com/
Twitter:   / muxhq  

00:00 - introduction to adding audio tracks with ffmpeg
00:22 - use case 1: replacing the original audio track
02:52 - use case 2: adding an additional audio track
04:40 - conclusion and benefits of multi-language audio tracks