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lightning to HDMI Adaptor

TheAudioDabblerTheAudioDabbler
in General App Discussion

Good afternoon all. I am looking for anyone who has experience with Lightning to HDMI adapters. I have a cheap one but it is lags and has latency. I wanted to use it to potentially stream my iPad screen via a capture card. In a few tests I have conducted, there is a huge latency with the audio and video.

My main question is does anybody use a lightning to HDMI adapter with success? I could deal with minor latency. Reaching out before I drop $40 bucks or so for an authentic apple adapter to test.

Thanks
Mitch

Comments

  • ambrosiajamambrosiajam

    I had a terrible time with this. I’m pretty sure they don’t want you to do it and purposely made this impossible and unbearable so they could prevent you from watching tv with your iPad. Like seriously, video apps were blocked once it detected I was using this. So infuriating actually

    I think there’s some kind of capture system, like the kind that twitch streamers use, I’d look into that

  • RichtownsRichtowns

    I have a cheap one and its difficult to set up (I have to plug everything in in a certain order) but once its going the latency is acceptable for midi triggered visual effects synced to music. Ill find out what make it is if you like but its a chinese ripoff for sure

  • Phil999Phil999
    edited October 2023

    I had good experiences with the Apple adapter. For projections, and with live streaming.

    For projections, the timing/latency doesn’t matter, but for live streaming the adapter was in sync with other cameras. I can recommend this adapter.

    It is not quite clear to me how other adapters can have latency. A HDMI signal is always instantaneous. In my live streams I also used a second iPad, a more modern one with USB C and a common hub with HDMI output. Same performance.

  • McDMcD
    edited October 2023

    Google is your friend. The Apple Lightning to HDMI adapter has an ARM Chip inside it:

    https://www.theverge.com/2013/3/1/4055758/why-does-apples-lightning-to-hdmi-adapter-have-an-arm-computer-inside

  • MadGavMadGav

    My wife used her iPad with the Apple HDMI adapter and an external screen for quite some time, I don’t remember witching about lag, plenty about iPad office software…

  • TheAudioDabblerTheAudioDabbler

    @McD Apple can't just do something simple. Maybe I will try an authentic one someday, although my 2017 iPad pro is showing its age and any upgrade would have a USB-c port, which opens up the options for HDMI output.

    I have a couple other options for streaming that I will explore. I enjoy videos with the presenters face so that is what I am trying to accomplish. You can stream straight to twitch or youtube form your iPad but there is no facecam option. There are a few apps that promise facecam but some are just reaction cams and others require remote connection and another device. Seems like a simple task to make a camera app that you can load up via AUv3 but I am also not a programmer. plus only musicians would benefit from that. apparently a lot of gamers stream iOS games.

    @Phil999 Thanks for the info. I guess I could order one from Amazon and if it doesn't do what I want, just send it back.

  • McDMcD

    @TheAudioDabbler said:
    @McD Apple can't just do something simple. Maybe I will try an authentic one someday, although my 2017 iPad pro is showing its age and any upgrade would have a USB-c port, which opens up the options for HDMI output.

    The latency comes from the cable - which is actually not just a cable, but rather active electronics. This also means that the latency depends on the quality of that electronics.

    The Apple Lightning to Digital AV Adapter has a latency that is ~70 ms. If your adapter really has a 100 ms latency, then you could reduce that latency by switching to Apple's adapter.

    The lowest latency is mirroring to an Apple TV4K and let it handle the Video signal generation.

  • KorakiosKorakios

    Are you sure the capture card is not the issue ?

  • TheAudioDabblerTheAudioDabbler

    @Korakios I have several I tested with and one of mine has latency low enough that I could almost play a games with the output to the computer with my switch.

    I will test my MacBook pro later today and see if I get usable latency with it.

    All the time i have spent tinkering with trying to get a setup so I dont have to edit the videos, I could have just recorded and edited videos. But that does not resolve my desire to do some live streaming.

  • KorakiosKorakios
    edited October 2023

    @TheAudioDabbler said:
    @Korakios I have several I tested with and one of mine has latency low enough that I could almost play a games with the output to the computer with my switch.

    I will test my MacBook pro later today and see if I get usable latency with it.

    All the time i have spent tinkering with trying to get a setup so I dont have to edit the videos, I could have just recorded and edited videos. But that does not resolve my desire to do some live streaming.

    well , for live streaming I don't think such a small latency matters since you can delay your camera to match the ipad capture via hdmi . Unless the audio is locked to the hdmi output and can't use any other audio
    I assume capturing the video via wifi doesn't work well ?

  • MarkHMarkH

    @McD said:
    The lowest latency is mirroring to an Apple TV4K and let it handle the Video signal generation.

    Indeed, from my research the HDMI adaptor actually takes an AirPlay-encoded video stream from the iPad and has to convert it to HDMI before sending it out, which is an extra step over plain AirPlay! This is something I talked about in some detail in this video (from 11:00 to 17:50).

  • u0421793u0421793

    I use the lightning to HDMI adaptor all the time for my livestreams – eg:

    https://www.youtube.com/live/_xr5azVjuLY?si=9QZleJ9NiKTREham (Seeing as it is hello Ian today)

    This goes into channel 2 of the ATEM Mini Pro while my camera HDMI (which is a Raspberry Pi High Quality camera) goes into channel 1 into the upstream keyer (the titles are on the DSK)

    And more recently I’ve been experimenting with a setup using my old iPad 2 with TouchViz through the 30-pin to HDMI adaptor, as well as the iPad Pro through the lightning to HDMI adaptor, and this time I’m using a different switcher as an experiment, everything about this is experimental – it’s my head cam RPi into input 1 of a Roland V-02HD MkII video switcher, a 4x1 multiviewer goes into input 2, the four inputs of that are iPad 2 via 30pin-HDMI; iPad Pro via lightning-HDMI; a pair of ‘overhead’ (not very overhead) cams which are also each further Raspberry Pis with High Quality cameras fitted with different (vintage-ish) lenses into the remaining two HDMI inputs

    https://www.youtube.com/live/U4IzNa7TvNE?si=qTN1IAui6zaI88kv
    https://www.youtube.com/live/kGDCAQHoLfE?si=BrxuD5Mpu_tLtqIi

  • TheAudioDabblerTheAudioDabbler

    Thanks for the information @Markh

    @u0421793 So is the one you use, the official one from apple?

  • TheAudioDabblerTheAudioDabbler

    The Roku and airplay actually works decent. The latency is not playable in a live situation but it would work for tutorials, sound tests and designs.

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