General observation:

Almost any program that has a "... for email" process you can click is going to compress whatever it's applied to. The same for "... for web" processes. Sometimes the compression is done fairly well, but sometimes it's just a brute-force "make it littler."

If you save the video/photo as a file on your computer and attach it to an email message, you should be able to avoid the compression - usually.

Be aware though that some "email servers" use additional compression that they don't like to mention, and sometimes if you use one of these services you may have to change some settings to "not compress" or even your attachments can get mangled. Sorry, but I haven't kept track of which ones draw the most complaints. I believe that AOL is one, but don't hang them without a trial. An email service that makes you install their own browser and/or email program would be most suspect.

This "extra compressing" may be more common with "Messenger" exchanges than with conventional email, since they're intended to be closer to "real-time" exchanges; although I haven't seen enough complaints to be sure how extensive any such special treatment is.

John