Discussion in 'Windows Desktop Systems' started by Bman, Sep 10, 2006.
This is very simple, just I have never delt with it.
Is mp4 a video file?
yep, mpeg-4 video http://www.apple.com/quicktime/technologies/mpeg4/
.mp4 does not mean it's a video file however.
You can have just audio in .mp4.
I convert all my music with foobar2000/AAC with the .mp4 extension.
Thread title modified.
But most of the time, say if your downloading something an mp4 file is most likely video yes.
MPEG4 is a standard used heavily for video (like DVD rips) on the web.
m4a is more common place for Audio files.
MP4s are mostly video that can be loaded onto PSP and mobile phones to view. Most mobile phones use the 3gp file format but many can read the mp4 format as is without conversion. My LG VX9800 has 7 episodes of the Simpsons and the "Still Seeing Breen" music video on it in mp4 format.
Files in .m4a format are actually the audio layer of (non-video) MPEG 4.
Heh, ya beat me to it. (Got stuck watchin some Football highlights, American Football. )
Also there are "protected" m4a files.
More info on mp4 file format: