DRM on MP3/MP4

[beyondthegrave]

I have a few questions on DRM:

1. Are there services/software that will let me put DRM protection on MP4 video files?

2. Are MP3 files capable of having DRM, or only other formats like WMA?

Thanks for any help you can offer.

[Sharktooth]

duplicate thread: https://forum.doom9.org/showthread.php?t=131557
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