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audioffmpegmp3sox
Andrei Smirnov
Andrei Smirnov

Reputation: 93

How to extract audio in 8khz using ffmpeg

I am using ffmpeg to extract the audio from a video. Below code downlaods the audio from a video file. I'm not sure how efficient this program is but I do know that it downloaods it in 48KHZ.

How do I use this program to extract audio from a video in 8Khz because the file is getting too big.

ffmpeg -i video_link -vn output.wav

Upvotes: 1

Views: 1512

Answers (1)

vicki
vicki

Reputation: 470

Use -ar option to change frequency rate

ffmpeg -i video_link -vn -ar 8000 output.wav

If you want to try different formats of audio check the available formats in ffmpeg using ffmpeg -formats and available codecs using ffmpeg -codecs

Here's an example to extract to mp3 file

ffmpeg -i video_link -vn -ar 8000 -f mp3 output.mp3

Edit: as @llogan pointed out, -f option is not needed, ffmpeg automatically mux mp3 file.

ffmpeg -i video_link -vn -ar 8000 output.mp3

Upvotes: 3

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