Question about video textures not being exported

About Decals function can export texture about .mp4 normally in P1 version. In the latest version this function appears that the video textures are not exported, the export is blank and the objects that are decals are white. This is the same problem as in the P2 version where the video textures are not exported. Thanks for solving this problem. Or I wish I could download and use the P1 version again, but I don't know where to download it.