[FFmpeg-user] Help with creating MP4 video with multiple audio tracks

[Chiara]

Hi Nicolas,

Of course! Thank you very much, it works now.

Cheers,
Chiara

-

Chiara Rendeková

Marketing Assistant 

+421 911 437 039 chiara.rendekova at foliovision.com

Foliovision s.r.o. | Strelecká 2 - 81101 Bratislava - Slovakia

> Dňa 18. 1. 2021 o 8:41, Nicolas George <george at nsup.org> napísal:
> 
> Chiara via ffmpeg-user (12021-01-18):
>> I’m new to this, so I apologize if I’m missing something trivial. I
>> need to create an .mp4 video output with multiple audio tracks in it.
>> I run the command:
>> 
>> ffmpeg -i sample-mp4-file.mp4 -i hindi.aac -i tamil.aac -i telugu.aac
>> -map 1 -map 2 -map 3 -metadata:s:a:0 language=eng -metadata:s:a:1
>> language=tam -metadata:s:a:2 language=tel -metadata:s:a:3 language=hin
>> -codec copy multilanguage.mp4
>> 
>> However, the output includes only the multiple audio tracks with no
>> video (0 kB)
> 
> You have not mapped the video file.
> 
> Regards,
> 
> -- 
>  Nicolas George
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