Are you trying to this specific file from an old device, or
Use a versatile player like VLC Media Player which can handle almost any .mp4 encoding. VID 20190619 024433 mp4
To prevent losing this video again, it is best to change the name to something descriptive: Are you trying to this specific file from
Search for the filename on YouTube using quotes. Sometimes users upload raw files without changing the name. VID 20190619 024433 mp4
If you are looking for a specific internet video often shared under this filename (sometimes used in memes or "found footage" circles):
If the file was interrupted while saving, tools like Fix.Video can sometimes recover the data.