Postby tao60 » 06 Jan 2019 17:24
I have a large 1 GB mpeg (that consists of many digitized short 8 mm films) that I converted to m4v (no other choice on macbook) and then I simply changed the extension to mp4. It worked but only for the first 30 second movie. Maybe I didn't wait long enough for the entire conversion process, because I later noticed that the resulting file was only 58 MB.
Instead, I installed VLC on my virtual Windows. Here I was able to select the desired output mp4 and it was only then that I noticed that the conversion process was going to take quite a while, so I just let it sit. This morning I had a 141 MB file that seems to have all the small films in it.
So my conclusion is:
If you are using VLC on a mac, you should be able to change the extension from m4v to mp4 but just make sure the entire mpeg is converted before you do so.
Or use VLC under Windows where you have the option to select mp4 output.