Please refer User Guide for the Supported formats that can be played in the inbuilt media players of the TV.
This issue may occur for one or more of the following reasons:
One or more Media Player files are missing or damaged.
You are trying to play a media file that has a file format that Media Player does not support. For example, you are trying to play a .viv file. Media Player does not support .viv files.
The media file is damaged.
The media file uses a codec that is not installed.
The media file uses a codec that Media Player does not support.
One can convert the file formats as per the supported formats as given in user manual.