mp4 will not play in HU
mp4 will not play in HU
Tried converting file to DIVx and burnt to a cd, still will not play
Unsupported file
Xtrons TD712
ok, this is an old thread, I know. But I'm pretty sure the problem will have been that MP4 is just a container format, and you can use lots of different codes to encode into the MP4 container. If a codec has been used that your head unit does understand, then it won't be able to play it.
MP4 is a confusing one. You'd think that the .mp4 extension would be enough, but it's a lot more complicated than that.
So steve, teach me all about MP4 mate, as it is all very confusing, need to know for future ref as so many electrical goodies play MP4, BUT dont when you run them
On Windows, you can find free utilities that will look at an MP4 file and detect which codec was used to encode it ("codec" is short for coder/decoder).
That can be useful if you're trying to play it within Windows, since you can also get other utilities which will tell you if you've got that codec installed, and if not you can then try and find it on the Internet and install it.
Programs such as VLC media player (from VideoLAN, which is free) are good, simple media players that come with a wide range of codecs and are pretty good at playing most things.
However, when it comes to other devices such as pocket "MP4 players", car head units, etc, etc, then it's a lot more difficult. I have no idea how to figure out what type of codecs they can use, I would guess you'd have to try and discover from the Internet, but you might find that it's not been published and you just have to experiment ! If there's a simple way of figuring this out, I'd love to know.
An MP3 is an MP3 is an MP3. As I said before, MP4 is totally different though - it's a bit like a format for an envelope, but once you open the envelope, the letter inside could be in hundreds of different languages, which you might or might not understand !
That's interesting stuff, I know there are a lot of different formats that are all kind of the same (like 3GP, MKV, etc) but I always thought that MP4 was MP4 and it was essentially a single file format.
That does make things very confusing! I guess the only way would be to get different file converters and find which one creates an MP4 that plays, and then stick with that one!