The TX-39AS500 has a greater number of video formats than most similar spec TVs that have been around for more than two years. The most frequently supported video format is VP8, but this video format is not supported by this TV. The video formats 3GP, AVI, FLV, M4V, MKV, MP4, VOB and WMV are also supported by this television.
AVI stands for Audio Video Interleave.
MP4 stands for Moving Pictures Expert Group 4.
WMV stands for Windows Media Video.