Quote:
Originally Posted by Sparky99
Yes HDMI is only there for 2 signals but CC is required by law to be part of the video signal. It is not and never has been a 3rd signal. according to law: (from the FCC.gov website)
(4) Closed captioning. The visual display of the audio portion of video programming contained in line 21 of the vertical blanking interval (VBI) pursuant to the technical specifications set forth in Section 15.119 of this chapter or the equivalent thereof.
They did this on purpose so it would be stuck inside of the video signal so broadcasters could not use any excuse for not sending through the captions.
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True for analog or SDTV
But in HDTV CC is completely different and is in binary format rather than in analog so it is *not* supported in HDMI at all because when they set up the HDMI proctol to standardized it they assumed that the STB's end does the decoding and overlaying on the video instead of the TV itself and did not include the CC to the HDMI supported protocol.
Even on HDTV only way to watch SDTV or Analog programming "line 21" in CC is to use s-video or composite cable which defeats the purpose of owning a HDTV if you couldn't use any upconvert players to play them at higher reslotions. Because line21 is stripped when upcoverted. DVD player need to preserve the line 21 and convert it into a digital CC or overlay them before sending it out via HDMI.
Some HDTV like Vizio is allowing CC pass thur via compoments cables but it still HD to Analog to HD which really not a true HDTV however just as good as it can get.
I am just angry that they have so many bandwidth spaces avaible in HDMI for like broadcast flag or DRM etc to prevent you from copying their movie or show but they don't want to make room for a simple CC and tells the STB or provider it their end that they have to do the decoding .. not the TV end which is pretty stupid IMO. I rather see the DVD distribtors worry about putting CC in it than having cable company or DirectTV or Dish Network try to add the CC with their HDTV shows because it doesn't come with it embedded or they are trying to us it from analog shows and the timings are way OFF too that why you see problem or late CC on HDTV show since they are "borrowing" from the analog SDTV show rather than redoing the CC in HDTV format ie "Digital CC" or DCC
.