@mux/ai

Working on a podcast transcription or AI workflow, well then FFmpeg is the tool

for you.

In this quick tutorial, we're gonna look at how we can extract audio from a

video file

in just one single command.

The audio format and codec can be wave, AEC audio, MP3, anything that you would

like.

Let's get into it.

So of course I have my video here.

Here's how you upload it.

Just a tutorial similar to this one, and let's say I want to transcribe this to

Spanish,

transcribe it to French, any other language.

I would extract it here and set it off to my third party service.

So again, this is using FFmpeg.

I have it installed here.

If you don't have it installed, if you're on Mac, you can simply do brew

install of FFmpeg.

You could also install from source from FFmpeg.org, it's just a little bit more

complicated.

I'm already in this current working directory over here with my video titled

extract_audio,

so FFmpeg-i, which is for input, video.mp4, and q colon a zero.

So this just kind of means the quality of the audio codec, zero, which is just

the highest,

and then we're gonna map just the audio stream.

That's gonna be A.

I'm gonna send it to our folder here as an mp3, all righty, so, there you have

it.

Here's how you upload and playback a video using mux, you can hear it too, so

the reason

why we would do this is just it's super simple, you see it's very quick.

We can also set this to wave, which is kind of an uncompressed audio format, so

we could

also, this way, here's how you upload and playback a video using mux, and then

last one

would be an m4a, which is AAC audio.

So these are all transcoding.

If I wanted to just simply map the output, I could actually see for the audio

codec map

zero, a, oh, I missed copy here, and if I just wanted to do audio, let's say

copy, I know

that it's AAC, so I could put it as an m4a, and this is gonna not transcode,

this will

just stream copy it out, you see it's much quicker, and it's the actual, it's

the same

stream that's in this original file here.

So whether you're saving voiceovers, pulling podcast clips, or repurposing re

els, FFmpeg

gives you full control.

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Thanks for watching.