The TV must support both the USB drive and the video file. Check the exact model’s manual before changing anything, and keep your original film backed up.
Try the simplest viewing option first
If your computer plays the film correctly, connecting it to the TV by HDMI may be simpler than preparing a USB drive. Your computer may need a compatible adapter. Test picture and sound before gathering everyone to watch.
For USB playback, find your exact TV model’s manual. Look for supported file systems and video and audio formats. An MP4 filename alone does not guarantee compatibility: the way the picture and sound are encoded also matters.
Check the drive before formatting
If the TV already reads the drive and plays your film, there is no reason to erase it. If it does not, check the manual before trying another format.
ExFAT supports large files and works with Mac and Windows, but some TVs have different requirements. FAT32 has a single-file limit of just under 4 GiB, roughly 4.3 billion bytes. A drive with plenty of free space can still reject a film that exceeds that limit. Do not replace your original with a smaller or converted version just to make it fit.
Format only a backed-up viewing drive
Formatting erases the selected drive. Copy anything you need somewhere else first, open that copy to check it, and identify the USB by its name and capacity. Stop if you are unsure which drive is selected.
On Mac, open Disk Utility and choose View → Show All Devices. Select the intended external USB device, then Erase. Choose the file system and partition scheme required by your TV; do not assume one scheme works for every model.
On Windows, open File Explorer → This PC, confirm the USB drive letter and capacity, then right-click it and choose Format. Select a supported file system, normally leaving allocation size at its default. Recheck the selected drive before starting. Use the official instructions below if menus differ.
Test one film with sound
Copy one viewing file to the USB, eject it safely, and connect it to the TV. Open the TV’s media player and test several parts of the film with sound before copying more files.
If the TV cannot see the drive, investigate USB support and the file system. If it sees the file but cannot play it, investigate video and audio compatibility. Repeated formatting will not fix an unsupported video codec.
Send us the TV model, filename, and exact error if you need help. A compatible viewing version may be possible; keep the original delivery unchanged.
Keep a viewing copy separate
A USB drive used for playback is convenient but easy to lose or overwrite. Keep it separate from your main backup plan. If you make a special version for the TV, label it as a viewing copy so it is not mistaken for the original.