5 ms·

HDMI specification no longer being public

42 points by grodes 4y ago

dzmitry_lahoda 4y ago
wow. displayport is oss. huh. they did bad thing after killing display port. i should have support it more.
- theandrewbailey 4y ago
  > they did bad thing after killing display port. Who is they? And last I checked, displayport is very much supported in PC hardware.
  - doubled112 4y ago
    The desktop Nvidia 3050 that I just bought has a single HDMI port and 3 DisplayPorts. The AMD card before that and the Nvidia card in my other desktop have a similar number (one HDMI, two or more DisplayPorts) I'm curious too.
  - Tagbert 4y ago
    And, I believe, Thunderbolt uses DisplayPort as a video transport over USB-C. Nested protocols.
smeagull 4y ago
I feel like HDMI is dead anyway since USB-C. Not only do I get display port over it, it powers my laptop and lets me use the same mouse + headset for whatever laptop I happen to be using.
- john567 4y ago
  HDMI is pretty prevalent. I don't see any consumer electronics supporting much else...
  - Mountain_Skies 4y ago
    Not yet but now that there's so much overlap between the two, it's possible one will try to undercut the other. When you're producing tens of million of devices, a small pricing advantage of one over the other can move the needle. The biggest strength of HDMI now is going to be how many other existing AV devices there are that only support HDMI.
    - Matthias247 4y ago
      Sure there’s overlap, and DisplayPort could mostly do what HDMI could do for the past 10 years (apart from minor differences where one standard eg supported 4K a but earlier). Nevertheless HDMI stayed the main interface in the TV/Entertainment world. So I doubt this will change anytime soon
  - 2000UltraDeluxe 4y ago
    Screens will probably get new ports, but I seriously doubt HDMI ports on new screens will be removed before the VGA ports are. New TV's still have SCART connectors.
fps-hero 4y ago
If something becomes important or necessary, the entire document would be leaked, or relevant sections documented. Thank you Scihub and libgenesis. The more likely outcome is the specification will become its last version. If the spec isn’t open, people will implement it, but poorly. This will lead to gross incompatibly, and force people to default to known good legacy standards. For reference, see USB 3.0+. HDMI is already USBified. Most of the headline features of 2.1 are just making the 2.0 features mandatory, but introducing another set of optional features.
- patrickwalton 4y ago
  It would be awesome to find the MIPI CSI (camera interface) standard on sci-hub or libgenesis, but it doesn't seem to be there.
theandrewbailey 4y ago
(2021)
zaptheimpaler 4y ago
According to another comment here, display port is OSS! Ive always liked it more anyways since it has like 2x the bandwidth IIRC, like 80Gbps. So almost any displayport 2.0 cable/connector pair can do fast refresh rates at high res. In contrast HDMI is confusing with weird versioning numbers.
- garaetjjte 4y ago
  >display port is OSS! It's not. Documents are only available for VESA members.

42 points by grodes 4y ago

dzmitry_lahoda 4y ago

wow. displayport is oss. huh. they did bad thing after killing display port. i should have support it more.

theandrewbailey 4y ago
> they did bad thing after killing display port. Who is they? And last I checked, displayport is very much supported in PC hardware.
- doubled112 4y ago
  The desktop Nvidia 3050 that I just bought has a single HDMI port and 3 DisplayPorts. The AMD card before that and the Nvidia card in my other desktop have a similar number (one HDMI, two or more DisplayPorts) I'm curious too.
- Tagbert 4y ago
  And, I believe, Thunderbolt uses DisplayPort as a video transport over USB-C. Nested protocols.

smeagull 4y ago

I feel like HDMI is dead anyway since USB-C. Not only do I get display port over it, it powers my laptop and lets me use the same mouse + headset for whatever laptop I happen to be using.

john567 4y ago
HDMI is pretty prevalent. I don't see any consumer electronics supporting much else...
- Mountain_Skies 4y ago
  Not yet but now that there's so much overlap between the two, it's possible one will try to undercut the other. When you're producing tens of million of devices, a small pricing advantage of one over the other can move the needle. The biggest strength of HDMI now is going to be how many other existing AV devices there are that only support HDMI.
  - Matthias247 4y ago
    Sure there’s overlap, and DisplayPort could mostly do what HDMI could do for the past 10 years (apart from minor differences where one standard eg supported 4K a but earlier). Nevertheless HDMI stayed the main interface in the TV/Entertainment world. So I doubt this will change anytime soon
- 2000UltraDeluxe 4y ago
  Screens will probably get new ports, but I seriously doubt HDMI ports on new screens will be removed before the VGA ports are. New TV's still have SCART connectors.

fps-hero 4y ago

If something becomes important or necessary, the entire document would be leaked, or relevant sections documented. Thank you Scihub and libgenesis. The more likely outcome is the specification will become its last version. If the spec isn’t open, people will implement it, but poorly. This will lead to gross incompatibly, and force people to default to known good legacy standards. For reference, see USB 3.0+. HDMI is already USBified. Most of the headline features of 2.1 are just making the 2.0 features mandatory, but introducing another set of optional features.

patrickwalton 4y ago
It would be awesome to find the MIPI CSI (camera interface) standard on sci-hub or libgenesis, but it doesn't seem to be there.

theandrewbailey 4y ago

(2021)

zaptheimpaler 4y ago

According to another comment here, display port is OSS! Ive always liked it more anyways since it has like 2x the bandwidth IIRC, like 80Gbps. So almost any displayport 2.0 cable/connector pair can do fast refresh rates at high res. In contrast HDMI is confusing with weird versioning numbers.

garaetjjte 4y ago
>display port is OSS! It's not. Documents are only available for VESA members.