[FFmpeg-user] Set same audio/video codecs for avi files

[Rossana Guerra]

Hello everyone, I need to set the same audio/video codecs to differents
.avi video files. It is needed in order to join them.
I passed to h264 video codec, but I can't find the correct comman line to
set all them to mp3 audio codec.

I could transform to h264, set the frame rate, bit rate, and so on.

Is this a correct manner to join files?

Thanks in advance

Regards