To play this well, you need a little computer knowledge. First of all, you have to check the format of DVD, that is, look at the video file extension. Check whether the video file extensions downloaded on the mobile phone memory card are consistent. At present, most DVD playable formats are common formats such as MPEG, AVI and MPEG4-4. Please refer to DVD specification parameters for details. If the format is wrong, you need to download the video in the corresponding format or use format conversion software on your computer to convert the format before playing it on the player.
Finally, the mobile phone memory card is a TF card, which can be read by inserting a TF card reader into the USB port of DVD.