Generally speaking I believe that if you commit a crime, you have to pay the price. People have made an argument that smaller crimes should be ignored when they prevent a bigger travesty of justice. For example, underage drinking is ignored when some one alleges rape. Being in the country illegally is ignored when some one alleges DV or some other crime, etc. In this case 12 innocent people were spared decades in prison.

"But the teens say the sex video and other photos taken that night is what eventually exonerated them.

According to some reports, the woman recanted after she was confronted with a video of the encounter, seized by police, that appeared to show the sex was of a consensual nature."

This might be why they're not being prosecuted. In the other examples, it's often codified. The policy of non-enforcement is official and public. Should taping a sexual encounter when it prevents a conviction for a false rape be a codified non-prosecutable offense? If she reports the illegal taping, they can be prosecuted, but if she reports a rape and they use the tape to exonerate themselves, then they can't.

Posting it on-line would be another issue entirely, however, rape victims have posted things on-line that were illegal and given a pass. Women who've simply gotten an unwanted pic have posted it on-line and gotten a "you go girl" from feminists. Posting the video does serve as proof of their innocence and an argument can be made that it merely refutes the media attention they were given when they were charged.

https://www.timesofisrael.com/british-woman-who-accused-israelis-of-rape-a-victim-of-revenge-porn-lawyer-says/

Don't know where I stand, but I think it's an interesting discussion that should be on our radar.