Yes, HDMI is all about DRM, as well as being purely digital. While anything can be broken, I've never seen any other software which can decode DRM'd DVR-MS or WTV.ĬyberLink can display CC in DVR-MS and WTV files. If you think that you can break the DRM on either of those formats, you're welcome to try. CyberLink is the only developer outside of Microsoft that I'm aware of which Microsoft has licensed for decoding DRM'd DVR-MS and WTV. Digital broadcasts are probably stored as-is, WTV supports multiple audio and video streams, and at least H.264 as well as MPEG-2. There was a lot of talk about it when extracting (NTSC source) MPEG-2 from DVR-MS, it was necessary to move the CC data to the standard location that MPEG-2 players were expecting. DVR-MS and WTV both may or may not apply DRM, both store metadata separate from the audio and video streams. Microsoft chose to store the CC data differently. When encoding NTSC to MPEG-2, there was a standard of where the CC data was stored, dictated by the scan line sequence of NTSC (including VBI). CC decoders are digital devices, no PC was required. Digital data can be used to modulate an analog carrier signal. #49, mike, yes, NTSC CC data was always digital.
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