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Nice! Everything I'd seen before was DVI. What about HDMI input? What I'm imagining is an HDMI freeze button, to buffer a single frame. Many projectors have th

Nice! Everything I'd seen before was DVI. What about HDMI input? What I'm imagining is an HDMI freeze button, to buffer a single frame. Many projectors have that feature built in, but some don't, and I wish I could build it as an external hardware device.

lvh 7y ago
Huh. Why is that useful? (Since some projectors have it built in I imagine there's a use case I'm missing.) Splash screen while you figure out your presentation on your mirror but without the stress of your audience watching you click around?
- peterburkimsher 7y ago
  When projecting song lyrics at church, and the worship leader says: "let's sing the chorus again with 'we' instead of 'me'" and I suddenly have to freeze frame, edit the text, and bring it up as quickly as possible. I'm sure there are other use cases for a freeze button, and the idea of having it as a separate device is something so obvious to me that I'm surprised it doesn't already exist.
  - lvh 7y ago
    Aha, but the general idea is still "show the current thing while I'm futzing around to make the next thing happen"?
    - raihansaputra 7y ago
      Yep that's the gist. I've also seen some small events using the computer background as the static logo; they can prepare the next deck while freezing the logo up on he screen.
dbcurtis 7y ago
I would live HDMI input also, but for different reasons. I want to process video from HDMI streams.
- purisame 7y ago
  Mike Field has something in VHDL for this: https://github.com/hamsternz/Artix-7-HDMI-processing https://github.com/hamsternz/Artix-7-HDMI-processing
- TD-Linux 7y ago
  You maybe interested in litevideo, used by hdmi2usb.tv. https://github.com/enjoy-digital/litevideo https://github.com/enjoy-digital/litevideo
- markvdb 7y ago
  https://hdmi2usb.tv https://hdmi2usb.tv
nl 7y ago
I think https://github.com/timvideos/HDMI2USB-numato-opsis-hardware https://github.com/timvideos/HDMI2USB-numato-opsis-hardware can do that (it's also FPGA based)

lvh 7y ago

Huh. Why is that useful? (Since some projectors have it built in I imagine there's a use case I'm missing.) Splash screen while you figure out your presentation on your mirror but without the stress of your audience watching you click around?

peterburkimsher 7y ago
When projecting song lyrics at church, and the worship leader says: "let's sing the chorus again with 'we' instead of 'me'" and I suddenly have to freeze frame, edit the text, and bring it up as quickly as possible. I'm sure there are other use cases for a freeze button, and the idea of having it as a separate device is something so obvious to me that I'm surprised it doesn't already exist.
- lvh 7y ago
  Aha, but the general idea is still "show the current thing while I'm futzing around to make the next thing happen"?
  - raihansaputra 7y ago
    Yep that's the gist. I've also seen some small events using the computer background as the static logo; they can prepare the next deck while freezing the logo up on he screen.

dbcurtis 7y ago

I would live HDMI input also, but for different reasons. I want to process video from HDMI streams.

purisame 7y ago
Mike Field has something in VHDL for this: https://github.com/hamsternz/Artix-7-HDMI-processing https://github.com/hamsternz/Artix-7-HDMI-processing
TD-Linux 7y ago
You maybe interested in litevideo, used by hdmi2usb.tv. https://github.com/enjoy-digital/litevideo https://github.com/enjoy-digital/litevideo
markvdb 7y ago
https://hdmi2usb.tv https://hdmi2usb.tv

nl 7y ago

I think https://github.com/timvideos/HDMI2USB-numato-opsis-hardware https://github.com/timvideos/HDMI2USB-numato-opsis-hardware can do that (it's also FPGA based)