The -an option before the input means ignore the audio stream. The file path to save the combined result to. This is the file he wants to use the audio from, making this video B. This is the file he wants to use the video stream from, in his case, it's video A. VIDEO=$1įfmpeg -an -i $VIDEO -vn -i $AUDIO -map -map -c:v copy -c:a pcm_s8_planar $OUTPUT Let me show you the example I showed him and I will break it down. I showed him you can do all this in one command, avoiding this file format issue, while also not creating the intermittent files. He claimed to need the audio in the WAV file format but the WAV format wasn't compatible with the codec he needed to transcode the audio into. Now, this approach is fine but he encountered an issue. Extract only the audio from video B, while also transcoding it a codec he needed it to be in.

The approach they were trying was as follows: I had someone email me asking how to solve the following problem: I would like to take video A, video B, and replace the audio in video A with the audio from video B

Ffmpeg copy all audio streams to wav