Merge Audio and Video in Seconds with FFmpeg

FFmpeg is an incredible tool that can seemingly do anything provided you can find the right incantation. I've been using this command a bunch recently and it has saved me a ton of time already.

The command:

Let me know if you have any cool FFmpeg commands you run.

#ffmpeg #videoediting #opensource

[Kodularturkiye]

ffmpeg -i input.mp4 -i input.mp3 -c:v copy -c:a aac -map 0:v -map 1:a output.mp4

[sujansinhthakor]

thanks, i was having trouble using ffmpeg and found out your vid and it worked like a charm

[LuKoFi]

thanks, really helpful and well explained

[JCNeupert]

Thank you very much. I try to encode two stereo streams (front & rear) into one binaural stereo file. The docs tell me to use sofa profiles. I found those, but no docs which one to use. Is there any straight forward command line like (GPT suggests):
ffmpeg -i front.wav -i rear.wav \
-filter_complex "[0:a]af=earwax=0.6[b0];[1:a]af=earwax=0.6[b1];[b0][b1]amerge=inputs=2, pan=stereo|FL=FL+0.30*FR|FR=FR+0.30*FL[a]" -map "[a]" -ac 2 -c:a pcm_s16le -y out.wav

[SakuraHougetsu]

Thank you, another question, is there a way to extract audio from a video, loseless with ffmpeg?

[koopdawhoop.]

I used this combined with yt-dlp to download YouTube videos and oh is it so beautiful

[flesz_]

does it do it without re-encoding?
I have downloaded youtube video using yt-dlp and have audio and video separately . All it needs is merging together

[dan_crim]

i always run `ffmpeg -i input.mkv output.mp4`
to reduce the video size for yt uploading

[weeb]

0:41 your audio file is much bigger than your video file? interesting 🤔

[mothman]

Gotta love simple videos that skip half the information you need to actually complete the process

And also don't post the command in the description or where to put it :)