I have tried to play mp4, it runs ok. Dont expect a ground breaking performance. FYI it dont support mkv.
This information came directly from customer support online chat.
The type of files accepted are :
•Photo’s - .JPG, .JPEG, .BMP, .GIF, .TGA
•Audio - .MP3, .WMA
•These video file types are known to work through USB, but not all codecs and formats are supported. .MPEG, .MOV, .AVI, and .MP4.
You will need to use the Media app on the VIA dock instead of an input option. The TV will not recognize the USB drive if inserted prior to the TV being turned on.
The USB ports are for music and photos only (they will not recognize a tablet pc, cell phone, keyboards, external hard drives- etc).
Thank you for inquiring about our product.
Supported video formats are: .avi, .vob, .wmv
Thanks and have a great day!
answered 9 months ago