I am now researching on what formats the TV plays by default and what can be played via DLNA (through transcoding).
Hopefully I will be out with my analysis in a week's time.
But there are various factors such as the the codec, the level and the audio format.
I realized that 50% of the videos I had did not play and most of them were DivX.
Ironically, the newer codec, Xvid plays fine on the TV, but the older does not.
Also, level 5.0 videos get stuck on TV and you can see one frame every 20-30 seconds.
Not many would be interested in this, since they have a dedicated media player or a BD player, but perhaps someone might find this interesting?