If the video is 1080p or higher, use a tool like Handbrake to downscale it to the frame's native resolution (e.g., 1024x600).
Ensure your SD card or USB drive is formatted to FAT32 . Many digital frames cannot read NTFS or exFAT formats used by newer high-capacity drives. RTS1140 mp4
Select the source (Internal Memory, SD, or USB) and press . If the video is 1080p or higher, use