[FFmpeg-user] Add audio at specific time in video

[Lou]

On Tue, 28 Jan 2014 17:01:27 +0530
Jay Sardhara <jay.skythunder at gmail.com> wrote:

> I want to add a *.m4a audio of 5s duration to a *.mp4 video file. I have
> already tried the -itsoffset command of ffmpeg.
> 
> ffmpeg -i a.mp4 -itsoffset 00:00:10 -i b.m4a -map 0:0 -map 1:0 -preset
> ultrafast o.mp4

Please include the complete ffmpeg console output.