How to replace a videos' audio with an audio file | FFMPEG

Need to replace a video's entire audio track with another audio file? Well, instead of rendering out the entire video again, you can simply and almost immediately swap out the audio with just one line of text. This method is super simple but super effective.
How to install FFMPEG: • How To: Download+Insta...
The command:
ffmpeg -i "PlayerParticles.mp4" -i "newaudio.aac" -vcodec copy -acodec copy -map 0:0 -map 1:0 "output.mp4"
Timestamps:
0:00 - Explanation
1:29 - Check you have FFMPEG installed
2:30 - Entering the command
5:15 - New video file with replaced audio working
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Everything in this video is my personal opinion and experience, and should not be considered professional advice. Always do your own research and make sure what you're doing is safe.

[@DrewDoesThings]

Thank you so much! I needed to replace the audio in a 4K video that, even though it was only 5 minutes, took over an hour the first time because my graphics card is pitiful at video encoding. You just saved me so much time!

[@BABz]

same story for me lmao

[@ThaBEN_NL]

Life saver! I have a old PC. For a project I used a AI Upscale tool, which took me 2 days to render the project. The picture quality is excellent, but the program messes up the original audio. The rendered output file wasn't recognized by any of my video edit programs so I couldn't easily just swap the audio. Transcoding it in another file format always resulted in picture quality loss. After a full week of trying stuff, this finally solved my issue! Now I have the correct picture + audio quality for my project!

[@n0stal6ic2]

This is super helpful. thanks!

[@GmanGer]

Thanks alot, saved me from rerendering a 16 min FX heavy video.

[@filipesimoes5398]

Earned a new subscriber just for the cmd tip!

[@StephenLoney]

Seriously! lol

[@plexxarbiitch]

My volume was all the way up and you earraped tf outta me

[@jailbr3ak_acdc]

Thank you so much! worked perfectly :D

[@smooth7041]

very useful!.. Thanks!!

[@BABz]

thank you!

[@Stallzyx]

Looks like this video will help fix my problem but maybe the people who told you to render your audio differently were politely telling you that your Bass EQ is WAY too high! I've got to listen to the video so quiet or manually take the bass out my headphones otherwise this audio processing hurts my head. Looks like you've fixed this in more recent videos though :D

[@Shprotec]

thanks

[@zhizn_snake]

This totally worked, but I had one problem After conversion, my video no longer showed when I used my preferred video player, Scorpio. It shows fine in VLC, but not Scorpio, no idea why that happened. Does this method change the video encoding from what the original video had?

[@kothandanp3809]

Can I use these commands on Android.. technically they are having a Android application of ffmpeg cli.

[@robinreso6240]

i am trying to do this for a bunch of files in a directory.Forfiles ....in a batch file
ffmpeg Test_video.mov Test_video.wav --->Test_video.mov .....
I know how to do this for one file.
but how can i write batch file that looks in a folder for a video and a wav file of the same name and automatically join/replace the audio in de video file?
i that makes any sence...i am not a programmer.do you got some tips /pionters how i can accomplish this?
thx

[@GuilhermeGueringh]

Voce é o cara KKK tmj

[@mokphea]

How to replace all videos sound, please🙏🙏

[@happytube2841]

Thank you! This was very helpful. Your exact code worked for me even though I was using a .m4a audio file. I'm not very tech savvy, I gather .aac and .m4a are very similar or maybe even the same? Can someone explain that to me? Thanks!

[@rafaelrocha8483]

Sr... your voice is realy smooty. Thank you

[@bleucblancrouge]

Hi, thanks for your video very efficient but i have a problem, ffmpeg won't find my input file i checked the name, changed it, made sur there was no space but nothing works, it just won't find my input files. Any ideas?

[@jcpenny8399]

cd into the directory with your file

[@dimasky8671]

4:54

[@aircraftcarrier6789]

ngl the bass in your voice is a bit overbearing. I have to turn down the volume... boosting the lows is nice, I do it too but like.. bruh

[@Stallzyx]

duuude for real... same. this kind of EQ hurts my head man