A:
Supported formats and discs are:
Video CD : Yes (PBC)
SVCD : Yes (PBC)
CD (CD-DA) : Yes
DVD-Video : Yes
LPCM Playback : Yes (DVD/CD)
WMA Playback : Yes (DVD/CD)
MPEG1 Playback : Yes (DVD/CD)
JPEG Playback : Yes(DVD/CD)
MP3 Playback : Yes(DVD/CD)
DVD text : Yes
KODAK Picture CD : Yes
DVD Camcorder 8cm DVD : Yes (DVD-R/-RW/DVD+R DL/+RW)
DVD+RW : Yes
DVD+R : Yes
DVD-RW : Yes (Video/VR)
DVD+R Double Layer : Yes
DVD-R Dual Layer : Yes (Video/VR)
DVD-R : Yes (Video/VR)
CD text : Yes
MP4, I believe us usually high def and would normally need to be played on an appropriately formatted disc capable of that. I believe that would have to happen on a Blu-Ray player. While this has up-conversion and a HDMI output, that is intended for DVDs and file formats above.