Sure on 100% - normal user don't do this! Only a stupid one.
Know peoples, who made many rare caps and these peoples was NEVER add any hardcoded garbage on video... It's pure shit broke movies like this.
P.S.
I know some ones, who made garbage like this...
Example:
http://vintage-erotica-forum.com/sho...79&postcount=3
Proof -
http://vintage-erotica-forum.com/sho...98&postcount=4