command-lineffmpegflv

ffmpeg - different video and audio length synchronization

I have a task where the sound is longer and the image should come later. Actually, this is exactly what I want, but it's a bit different: ffmpeg : mix audio and video of different length

First of all, I leave the picture I draw below to be understood. Click to see the image.

By doing this I am thinking of catching sync. With which ffmpeg command can I do this? Thank you.

Solution

  • I had to use offset. I solved it this way. I will automatically add the corresponding time interval according to the difference between video and audio. I will use the programming language for this.

    ffmpeg -i  finalsound.flv -itsoffset 00:00:44 -i finalvideo.flv -c copy final.flv

    Thank you.