MPEG-4 encoder

Hello,

I would like to ask about MPEG-4 encoder (part 2) for DM8168: I see in user's guide that encoder output file format is .m4v, is it the same as MP4 file format (MPEG-4 part 12) , i.e. does the encoder outputs mpeg-4 elementary stream or MP4 file format ?
Another thing I would like to ask if you can refer me to MPEG-4 samples (not too short samples).

Best Regards,

Ran