HDMI 1.3 confusion

admin_exported

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Aug 10, 2019
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In one of the recent mags there is a small feature near the back about the different incarnations of HDMI. One thing that confused me was the fact that, apparently a minimum standard of HDMI 1.3 is required to be compatible with 24fps. However, I am sure this can't be true because there are lots of examples such as the Sony BDPS1E or various Panasonic tvs (PX70, PZ700, etc) that only have HDMI 1.1 or 1.2 yet can still output / accept 24fps. What is going on?!
 

clearer_audio

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Oct 20, 2007
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Hi Benjamin, I have not read the article concerned but HDMI 1.0 to 1.2 will support 1080p video output up to 60fps. However, when you look at the detail 1080p/60fps (or 24/fps) is not compulsory within any of the HDMI specifications. So, ensure that both output and input components are 1080p/24fps compatible and use a certified HDMI cable (1.0 - 1.3) and you should not have any problems. Hope this helps! Kind regards, Darren Smith
 
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Anonymous

Guest
You are right that the Sony bdps1e does not support 24fps but It must be for other reasons. The PS3 was the first bit of AV kit to have HDMI 1.3, and it is the extra data capacity (bandwidth) that it enjoys over 1.1 allowing transfer of over twice the number of gigabits per second. HDMI supports 24-bit colour whereas HDMI 1.3 can support up to 48-bit. For example, my PS3 and Pioneer 'communicate' at 36-bit colour depth.

To translate the rubbish I have written above, HDMI 1.3 introduces billions of colours, greater shades of grey(between the black and white spectrum) and so, better contrast. It also allows lip sync correction, and on the audio front it enables the transfer of Dolby TrueHD and DTS-HD Master Audio.

The fact that HDMI 1.3 allows for so much more information transfer will, by design, enable 1080p (I can't off the top of my head think of any 1920x1080 res. screens that don't have 1.3) however I am not sure that relates directly to the 24fps argument which I assumed was more to do with Hertz than colours.
 

clearer_audio

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Oct 20, 2007
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Yes David, HDMI 1.3 is superior in terms of greater bandwidth and data transfer capabilities, better colour bitrates and hi-def audio (assuming again that both output and input components are fully compliant to HDMI 1.3). However, HDMI 1.0 is still capable of 1080p/24fps as long as both output and input components are compatible to this standard. Regards, Darren
 
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Anonymous

Guest
Thanks for clearing that up, Darren. David is not correct though, when he says that the Sony BDPS1E does not output 24fps because it certainly does.
 
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Anonymous

Guest
david is also wrong because panasonic have 1920-1080 sets and they are all hdmi.v1.2. fact. i have emailed them and they confirmed this to me .
 

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