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Tips Video Out via 3.5mm Headphones Jack?

Discussion in 'Android Devices' started by IPvFletch, Aug 24, 2010.

  1. IPvFletch

    IPvFletch Well-Known Member
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    So I see the Galaxy and Captivate support Video Out via 3.5mm headphones jack.

    Any chance this (apk?) could be ported to the EVO or other Android phones???
     

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  2. 06g35meister

    06g35meister Member
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    I dont understand why this would be better than HDMI...
     
  3. pwnst*r

    pwnst*r Well-Known Member
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    Nowhere in his post did he say it would be better. I'm not sure what device supports video out via 3.5mm unless it's pushed through an RCA male.
     
  4. IPvFletch

    IPvFletch Well-Known Member
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    Like EarlyMon and I said, Samsung's new phones DO.

    And yes, I didn't say it would be BETTER, although arguably it WOULD because the video out for Samsung Galaxy has the ENTIRE SCREEN outputted. Meaning, all apps, animations, and whatever you're doing on the phone. The EVO's HDMI out is nice and can play 720p and all that, but it only outputs video and slideshow, so for my purposes it is almost useless. :(

    If I could get the Samsung APK and try it, and if it would work, I'd be REALLY happy!! :D
     
  5. Cobravision

    Cobravision Well-Known Member
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  6. pwnst*r

    pwnst*r Well-Known Member
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    I mean what device supports it on the OTHER END hence why I mentioned RCA. In other words, what device would you hook up to the Evo that's male 3.5mm on the other end?
     
  7. IPvFletch

    IPvFletch Well-Known Member
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    Yes, you're right, and all of the ones have a 3.5mm adapter on one end with RCAs on the other.
     
  8. twospirits

    twospirits AF's janitor
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    If the Samsung Galaxy can do it, I do not see any reason for a xda hacker to not make it happen to the EVO. Soon enough you will see that on the evo.

    TS
     
  9. R1_Rydah

    R1_Rydah Well-Known Member
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    :bookmark: :fingers crossed:
     
  10. sitlet

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    It wont work. The internal board would have to route video to the headphone port, which I doubt HTC would have done without touting that as a feature.
     
  11. Shawnz

    Shawnz Well-Known Member
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    Exactly. It's probably just like my Sony Camcorder. It uses a 3.5 mm jack and has V / L / R RCA jacks on the other end. Probably looks like crap vs HDMI on the HTC phones.
     
  12. lamboh

    lamboh Well-Known Member
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    its cool and all...but what devices do u have that have 3.5 video input???
     
  13. shadowhawk2020

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    Someone didn't read the thread before posting...
     
  14. lamboh

    lamboh Well-Known Member
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    read it for me:D
     
  15. IPvFletch

    IPvFletch Well-Known Member
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    why, when it's so much easier to just spam a useful post with useless comments? :D
     
  16. Shawnz

    Shawnz Well-Known Member
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    This should make it clear (this is a pic of the cable my camcorder uses):

    [​IMG]
     
  17. lamboh

    lamboh Well-Known Member
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    u should be slapped with a ten pound- toe nail clipper:D
     
  18. mt2525

    mt2525 Member
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    Well I would want it as my former phone htc touch pro 2 had A/V out via a cable that I plugged into my in dash stereo/gps system in my car. I was able to use my phone with my sling app and watch live tv on my in dash 7" screen in my car. I miss it since getting my Evo but if this can be done then I would love to be able to plug it into my video in on my car stereo.
     
  19. PyroSporker

    PyroSporker Well-Known Member
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    When I read about this feature of the new Samsung's a few weeks back It made me very curious. I have not been able to find a definitive answer as of yet to the question if the Evo can potentially output via 3.5mm.

    I could be totally wrong and off base here, but I think like Sitlet was hinting at, there is more than likely a hardware limitation on the Evo as opposed to the Samsung. The Samsung headphone jacks I suspect are some type of specialized 3.5mm jack or are typical but have an extra conductor soldered to the circuit board for handling the video signal.

    I wish that it could be achieved through a simple software program or .apk, but I fear that it is not that simple at all. Like I mentioned, I believe that there might be a hardware roadblock, and even if there isn't I suspect it would take some really complicated programming to be able to tell the phone to redirect the video output through all the right channels and come out correct through the 3.5mm. Like some well choreographed symphony.

    But who knows, maybe there are greater minds than mine at work on this already on XDA. I would love to be proven wrong.
     
  20. jcthorne

    jcthorne Well-Known Member
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    The EVO does not support video out the headphone jack. But, if you are wanting other than HDMI video, use an HDMI to VGA or component video converter for your analog display. I use one for our presentation projector and it works great.
     
  21. IPvFletch

    IPvFletch Well-Known Member
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    The reasoning is because the HDMI out only does pics and vids, not the entire screen/apps/etc...

    As for the comments on HW limitations, I will remind you phones have been doing things like this for years. My dinosaur Windows Mobile phones even do this!!

    Also, the iPhone and EVO have other apps which utilize the headphones jack for data. It is just DATA, it doesn't have to be "video" or some special HW logic, just "data" (I guess in this case analog but could possibly be digital). It gets modulated the same way. For example, Square uses the headphones jack to plug in a magstripe reader so you can swipe credit cards. There's other apps like this too.
     
  22. R1_Rydah

    R1_Rydah Well-Known Member
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    This is the only thing I miss about my touch pro... Now i leave my touch pro in my vehicle & tether it to my Evo via the wireless tether app, so I'm still able to watch slingbox on my headunit
     
  23. whatsitsname

    whatsitsname Well-Known Member
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    Will you people listen to the guy.
     
    grindstoneslave likes this.
  24. IPvFletch

    IPvFletch Well-Known Member
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    WHICH guy?

    There's likely an on-board ADC or DAC which is connected to the headphones jack. This is how you get digital signals on the headphones jack. It is NOT just for headphones.
     
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