Videoconverter

So i'm working with a pretty old model of Sharp TV (pre-smart TV) model, and because i'm using it to display short videos at my pop-up booth, I needed it to be able to play my videos from a USB flash drive. I tried converting my clips using VLC player, Handbrake, Mpeg streamclip and other online file converters but for whatever reason, Videoconverter.com was the only one that allowed my videos to play on this tv screen. Everything else showed unsupported file format, despite being in the same file format that worked.