When you split an HDMI/HDCP audio/video signal from the source, having the signal go to a VIDEO-(Display/Processor/Projector) and the identical-split-signal to an AUDIO-(Processor/Receiver), what, if any solution, will work?

I've been told: "A splitter won't work. Audio can't be passed alone over HDMI, it rides on top of the video." - IS THERE A SOLUTION?

Please see this January 23, 2007 thread I posted at the SMR forum: Splitter for HDMI 1080P bypass of MC12HD? (http://www.smr-forums.com/forum_posts.asp?TID=283)

Thanks in advance for any information and/or clarification.

Paul

It is true that the HDMI signal does require a video signal (namely, it requires the video clock signal) in order to send audio (which sits in the blanking period of the video signal). However, even a blank/dummy pattern (such as all black) video signal would do the trick, so the audio does not have to be linked with a specific HD video signals.

One solution would be to split the HDMI signal (containing both the audio & video), with one going to the video processor (which extracts the video and ignores the audio), and the other stream going to the audio processor (which extras the audio but ignores the video). I have heard of a few products that will have dual HDMI outputs, perhaps for this kind of purpose.

When you split an HDMI/HDCP audio/video signal from the source, having the signal go to a VIDEO-(Display/Processor/Projector) and the identical-split-signal to an AUDIO-(Processor/Receiver), what, if any solution, will work?
May I ask why would you need such splitter?
In other words, what kind of application would benefit using splitter as opposed to straightforward source -> receiver -> display?

Why would you need to do this? There would be no benefit.
Just use the HDMI cable for the display, then use a digital audio cable (optical/coaxial) to the audio receiver. Secondly, like the previous poster stated, if the audio receiver has an HDMI in, it will also have an HDMI out to go to your display.

It is true that the HDMI signal does require a video signal (namely, it requires the video clock signal) in order to send audio (which sits in the blanking period of the video signal). However, even a blank/dummy pattern (such as all black) video signal would do the trick, so the audio does not have to be linked with a specific HD video signals.

One solution would be to split the HDMI signal (containing both the audio & video), with one going to the video processor (which extracts the video and ignores the audio), and the other stream going to the audio processor (which extras the audio but ignores the video). I have heard of a few products that will have dual HDMI outputs, perhaps for this kind of purpose.
Your response is greatly appreciated.

May I ask why would you need such splitter?
In other words, what kind of application would benefit using splitter as opposed to straightforward source -> receiver -> display?
Without the splitter I would not be able to use the original Video signal that is produced from the source, sent to the processor and then passed through to the display. I'm using a processor that only accepts a maximum HDMI Video signal of 1080i.

i.e. My digital audio processor will not accept 1080P Video via HDMI. I'm looking for a way to get the original 1080P Video signal from the source to the display.

Why would you need to do this? There would be no benefit.
Just use the HDMI cable for the display, then use a digital audio cable (optical/coaxial) to the audio receiver. Secondly, like the previous poster stated, if the audio receiver has an HDMI in, it will also have an HDMI out to go to your display.
There would definitely be a benefit for both audio and video. With a splitter, the video would maintain its original 1080P signal that is sent directly to the display, while the 2nd split signal would pass the original lossless "high resolution" Dolby TrueHD and DTS-HD MA to the audio processor. Audio is sent in a multichannel uncompressed LPCM form via HDMI from the "source". Digital audio cable (optical/coaxial) doesn't support the high resolution audio that is available.
Without a splitter, my digital audio processor in the chain, will only pass a 1080i video signal to the display. :(

Paul

Your response is greatly appreciated.


Without the splitter I would not be able to use the original Video signal that is produced from the source, sent to the processor and then passed through to the display. I'm using a processor that only accepts a maximum HDMI Video signal of 1080i.

i.e. My digital audio processor will not accept 1080P Video via HDMI. I'm looking for a way to get the original 1080P Video signal from the source to the display.


There would definitely be a benefit for both audio and video. With a splitter, the video would maintain its original 1080P signal that is sent directly to the display, while the 2nd split signal would pass the original lossless "high resolution" Dolby TrueHD and DTS-HD MA to the audio processor. Audio is sent in a multichannel uncompressed LPCM form via HDMI from the "source". Digital audio cable (optical/coaxial) doesn't support the high resolution audio that is available.
Without a splitter, my digital audio processor in the chain, will only pass a 1080i video signal to the display. :(

Paul

1080i means interlaced, i.e., each frame has two fields, one consists of odd lines and the second of even, but still all 1080 lines per frame.
1080p means progressive: each frame has one field of 1080 lines.

In your case source told by receiver to send 1080i, it splits each frame into two fields and sends them, but no bits lost. Receiver sends all that to display. Your display combines them back into 1080p. Display draws the same image it would if it got 1080p directly.

From Wikipedia:

"It should be noted that Blu-ray Disc and HD DVD sources are 1080p with no vertical filtering, therefore, 1080i output from players can be perfectly reconstructed to 1080p with 3:2 pulldown reversal."

Let experts correct me if I'm wrong.

From Wikipedia:

"It should be noted that Blu-ray Disc and HD DVD sources are 1080p with no vertical filtering, therefore, 1080i output from players can be perfectly reconstructed to 1080p with 3:2 pulldown reversal."
The quote from Wikipeda also is assuming the signal is 1080i/60, output from the player, because of the - "perfectly reconstructed to 1080p with 3:2 pulldown reversal" comment.

What if the source on the Blu-ray and/or HD DVD is "Film" based and is encoded @ a native 1080P/24fps?

Wouldn't a direct connection via a "splitter" to the display that will accept the native 1080P/24fps signal exhibit a superior picture than one produced by a reconstruction of a 1080i/60 video signal, from the audio processor, that would need the "3:2 pulldown reversal" to be "perfectly reconstructed to 1080P"?

i.e. Introducing judder?

Is it possible / is there such a player, that outputs a 1080i/24 signal that can be reconstructed to 1080P/24, the signal supported by the audio processor in the chain?

Paul

The quote from Wikipeda also is assuming the signal is 1080i/60, output from the player, because of the - "perfectly reconstructed to 1080p with 3:2 pulldown reversal" comment.

What if the source on the Blu-ray and/or HD DVD is "Film" based and is encoded @ a native 1080P/24fps?

That quote specifically addresses this particular case: search wikipedia for "1080p".

That quote specifically addresses this particular case: search wikipedia for "1080p".
Thanks for the response.

The Wikipedia "1080P" search does not address the judder phenomena that is introduced with the "3:2 pulldown reversal" from an interlaced source.

If judder is introduced from 1080P deinterlacing of a 1080i signal, then that would be a valid answer to your original question of "May I ask why would you need such splitter?"

IMO, this is now a critical question that needs clarification.

Paul

Is it possible / is there such a player, that outputs a 1080i/24 signal that can be reconstructed to 1080P/24, the signal supported by the audio processor in the chain?

PaulWhat is your player? I believe only the Sony PS3 can put out 1080p/24 and HD DVDs are mastered up to 1080p/60. A video processor can recognize film material and output with 2:2 pulldown at 48Hz or 3:3 pulldown at 72Hz eliminating judder.

What is your player? I believe only the Sony PS3 can put out 1080p/24 and HD DVDs are mastered at 1080p/60. A video processor can recognize film material and output with 2:2 pulldown at 48Hz or 3:3 pulldown at 72Hz eliminating judder.
A PS3 is included in my Home Theater equipment but to my knowledge, only outputs 1080P/60.

I'm preparing for the next generation software/hardware players that output native 1080P/24.

Didn't know that HD DVDs are mastered at 1080P/60.:confused:

Paul

A PS3 is included in my Home Theater equipment but to my knowledge, only outputs 1080P/60.

I'm preparing for the next generation software/hardware players that output native 1080P/24.

Didn't know that HD DVDs are mastered at 1080P/60.:confused:

Paul

The Sony BDP-S1 outputs 1080p at 60 or 24, depending on how you set it up. Are you sure that the PS3 is more limited?

Thanks,

Nick :cool:

Engadget reported it as offering 1080p/24.

In any case the way to approach film-based source, high refresh rate, display input matching nirvana is -

Source -> video processor (i.e. DVDO) -> Display

The Sony BDP-S1 outputs 1080p at 60 or 24, depending on how you set it up. Are you sure that the PS3 is more limited?

Thanks,

Nick :cool:
Engadget reported it as offering 1080p/24.

Doing a search (http://www.avsforum.com/avs-vb/showthread.php?t=773108&highlight=1080P24) revealed PS3 1080p24 output capability will be available around March, coinciding with Casino Royale (Blu-ray) and also the European launch.


Per rlb (http://www.avsforum.com/avs-vb/showthread.php?p=9409080&&#post9409080) - "Being able to receive 1080p/24 isn't really the key. The set needs to be able to receive 1080p/24 and then to show it at a multiple of 24 fps (i.e., 48, 72, 96, or 120). Receiving 1080p/24 and then showing it a the standard 1080p/60 provides no improvement."

Take a look at the DVDO Edge video processor.
It takes in mutiple HDMI signals and sends out HDMI video and HD audio on separate cables.
It may be a bit expensive, but it works perfectly.