Nobody knows for certain. There is nothing in either the law or DHS policy that forbids it, and there have been many cases where USCIS has accepted electronic media. I've read numerous BIA cases where the case history described the applicant having sent CD's, DVD's, and video tapes, either as initial evidence or in response to an RFE. It was obvious the IO's looked at them because the contents of these were described by the IO's in rendering their decisions. In one case they described not being able to consider a video on a CD because it was "undecipherable". They obviously wouldn't know that if they hadn't tried to look at it.
What we do know is that a lot of people have gotten RFE's for things they had already tried to submit via electronic media, such as photos on a CD. The wording on the RFE's made it obvious they rejected the evidence submitted on electronic media specifically because it was submitted on electronic media. They couldn't seriously make the argument that it takes any longer to view photos on a CD than it would take to view printed photos, so time is not the reason. I also doubt that data security is a factor. They could keep one computer system offline to safely view most types of optical media, though they'd need additional equipment to view older magnetic tape media.
This may be a service center policy that's specifically about certain types of petitions. Many adjudicators are contract employees who work from their homes. They may not have the resources to view every type of media you might send them. How many adjudicators would have the equipment required in their homes to view an 8mm digital video cassette, or a VHS-C compact cassette, or even a BluRay video disc?
are videos accpeted as proof?
in US Embassy and Consulate Discussion
Posted
They returned my Dvd's
They did not reject my package