Is it possible to refine that command so video.mp4 and music.mp3 don't need to be very long but are looped until the end of audio. That works but the output is not cut after the the duration of the shortest file (which is always the audio.mp3) map 0:v -map '' -c:v h264 -c:a aac -shortest output.mp4 My approach (with some extras like fading in video and audio volume control): ffmpeg -i video.mp4 -i audio.mp3 -i music.mp3 -vf 'fade=t=in:st=0:d=5' -filter_complex IN this section, well concatenate two audio files following the guide from How to concatenate (join, merge) media files. So music and video are allowed to be cut.Īll seperate task work in a way but putting everything together just doesn't work. The output should end after the length of audio.mp3 (or even better after the end of audio.mp3 + 5 seconds). I have included a link to the two test files I am using below. The second file is an MKV which was created by running the above AVI through FFMPEG with libx264 and libvorbis selected.

I want to use ffmpeg (preferably a single command) to combine a video (video.mp4) file with an audio file (audio.mp3) and have some background music (music.mp3) playing. The first file is an AVI created with Beepa FRAPS - A screen recording application. All +segments must have the same number of streams of each type, and that will +also be the number of streams at output. + +The filter works on segments of synchronized video and audio streams.

What I'm trying to accomplish is the following: +Concatenate audio and video streams, joining them together one after the +other.

Ffmpeg concat two audio files