Xnewvid (10).mp4 -

: If the file won't open, try playing it in a versatile player like VLC Media Player which supports almost all MP4 codecs.

: The (10) usually indicates that this is the 11th version of a file or a copy made because a file with the same name already existed in that folder. xnewvid (10).mp4

: If this is a final export, rename it to something descriptive (e.g., Summer_Vacation_Final.mp4 ) to avoid losing it among other "xnewvid" files. : If the file won't open, try playing

: You can use the Final Cut Pro X Video Inside Text Effect technique by placing your text over the video and using the "Stencil Alpha" or "Stencil Luma" blend modes. : You can use the Final Cut Pro

: xnewvid is often a default or placeholder name used by certain mobile apps or camera software before a user gives the project a final title. Video Inside Text Effect

If you are looking for "helpful text" in the context of video effects (like putting a video inside text), you can achieve this using the or Track Matte features in most editing software: