Is there any case law on this? Given it is a recording of video, not audio, how does the law treat the ability to convert video into audio? This would make mo

Is there any case law on this? Given it is a recording of video, not audio, how does the law treat the ability to convert video into audio? This would make most video recordings where audio is illegal to also be illegal, if it is so directly applied. Another fun legal question is what happens if I add fake audio to a video where the video is legal but the audio isn't, but I use legal audio recordings to fake the voice of the person I videotaped? Does it matter if the injected audio is close enough to what was originally said (say I remembered the words while I recorded the video)?