This is a tough question to answer because there are many possible interpretations of what you mean. What I will do is answer one that I think you may be alluding to. To make sure that the receiving end gets the file you're sending bit for bit, you can create your own checksum file. You use an application that can create an .md5 file (usually just a drag and drop of your file and it spits out the MD5 checksum). Then you send your video file along with the .md5 file. When the person on the other end receives your file, they can drop the .md5 on a checksum verification (usually the same program you created the MD5 with) and it will tell them that bit for bit the video file you sent matches the file you created the MD5 with.
If that isn't what you were looking for, please clarify your question.