I have a lot of video files that are in mixed formats (.avi, .mkv, .wmv) that I need to change to ".mp4". All of the video files are within one main directory, but also flow into sub directories under that as well. I have looked up how to bulk rename file extension, but I just can't seem to get it. I am using Ubuntu LTS 10.04. I hope that someone can assist.
Thank you.