Develop Bugs

[Q] MHL for audio, possible?

Hey all,
Not sure if this is possible but I want to somehow have audio out through the MHL/micro usb port of my s2. Reason being that it would be much nicer in the car to have 1 cord for charging and music rather than one cord for each.
Does the MHL port support this or could there possibly be an accessory to change the HDMI out feature to audio-only aux?
thanks!

also wondering about this for my AV receiver
i went ahead and ordered the HDMI MHL cable to test Spotify through my AV Receiver.

Since the HDMI audio is digital data I wouldn't bother researching down this lane.
But there certainly are docking stations that charge the SGS2 and offer a 3.5mm line-out at the same time, so it must be possible.
Pinout anyone?

faildroid said:
Since the HDMI audio is digital data I wouldn't bother researching down this lane.
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Don't understand what you mean here?

If you'd like to use the HDMI audio you would have to add a digital-analog-converter in order to feed your car stereo the analog line audio it needs. Plus I don't think the connector will allow charging while in HDMI mode.
So maybe it's best to put that port on the SGS2 into Home Dock or Car Dock mode. You might get some further help wit the pinout in this thread.

faildroid said:
If you'd like to use the HDMI audio you would have to add a digital-analog-converter in order to feed your car stereo the analog line audio it needs. Plus I don't think the connector will allow charging while in HDMI mode.
So maybe it's best to put that port on the SGS2 into Home Dock or Car Dock mode. You might get some further help wit the pinout in this thread.
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I think you're getting me confused with the original poster. My question was in regards to outputting just audio (Spotify) through my Onkyo AV receiver. There shouldn't be any issue with this, right? I've only seen the MHL-HDMI cable used on a TV directly, and not through a receiver.
Also, would it be possible to plug the SGS2 with the MHL-HDMI cable directly into the HDMI 1.4 input on the back of the TV, and use the ARC feature (Audio Return Channel) to feed either 2.1 or 5.1 audio back through the HDMI cable linking the TV and receiver to the surround sound speakers?

Wait, if HDMI out audio is digital out, can we play around to get a clean digital out signal that would play nice with portable external DACs?
Sounds impossible but who knows?

ghileman said:
I think you're getting me confused with the original poster.
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That's exactly what happened, my bad.
Unfortunately I haven't got the HDMI cable for the SGS2 yet but for the ARC feature I'd say it depends on your TV. Maybe you can try feeding an existing HDMI source to it and verify that a HDMI-in on the TV can be routed via ARC to your AVR.

faildroid said:
That's exactly what happened, my bad.
Unfortunately I haven't got the HDMI cable for the SGS2 yet but for the ARC feature I'd say it depends on your TV. Maybe you can try feeding an existing HDMI source to it and verify that a HDMI-in on the TV can be routed via ARC to your AVR.
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Yes, supposedly my TV can do that with the Freeview HD tuner audio, but I'm waiting for my antenna to put that to the test.

Solution: HD Fury II or HD Fury III. They have 2 channel analog output from HDMI input.
To clear up some things about MHL:
First of all MHL is not HDMI. By default, your phone needs to support MHL and your TV/Receiver/whatever also needs to be able to receive MHL signals.
There is no fixed connector type for MHL (the plug can either be proprietary or a readily available one such as USB or HDMI). Phones have MHL hardware connected to their USB ports. Upcoming TVs will have additional MHL hardware connected to their existing HDMI inputs.
You cannot use an ordinary USB<->HDMI type MHL cable to connect your phone to any HDTV. It will not work. You need an active cable that receives a MHL signal from the USB side, internally decodes it and reencodes it as HDMI, and then outputs it via the HDMI side of the cable to any HDMI device. That's why the cables are expensive.
The good news pertaining to this thread:
The active MHL cables we've seen so far are very small and compact. Basically the only thing you need is an MHL decoder which has an audio line out. There is no need for a HDMI DAC.

I can confirm that the Samsung MHL-HDMI cable for the SGS2 outputs both video and just audio beautifully to my home theatre receiver.

MHL to VGA is an option
Please excuse the necroposting. For future people who run across this thread when searching for MHL Audio products.
I discovered these products after some searching around:
http://vgaadapter.blogspot.com.au/2012/02/ikross-mhl-micro-usb-to-vga-display-and.html
http://www.ecvv.com/product/2822782.html
I'm not sure of the quality of the audio DAC but its an option.
But so is the Samsung Desktop dock or the car dock for charging and playing music at the same time through one plug.

i can't believe, but ac adaptor charger and p2-p2 or p2-rca cable work like a charm here

MHL Adapter

Hi, im looking to buy a samsung mhl adapter however my tv only has rca connect, if i buy a hdmi to rca cable will the video still display on my tv.. i.e hdmi goes into mhl adapter and rca goes into tv... Thankyou

No, it wont work..if its just a simple adapter. Via HDMI or DVI... you get a digital signal. RCA or VGA...ect. you get a analog signal. It's not compatible to each other, except you connect a hdmi/rca converter between the two cables. Simple adapter from china just won't work..

You need a converter -- HDMI is a digital signal, whereas composite video (the single yellow RCA cable) or component video (red/green/blue RCA cables) are analog.
Something like this one from Monoprice will do the trick. eBay and Amazon also carry devices like this, in the same price range.

Thanks alot guys i will be buying a converter...

Hopefully you're aware that the video quality from composite will be quite poor.
Presumably if your TV doesn't have HDMI or VGA connectors then it's probably still a CRT screen?

RCA out possible?

My car unit has a rca video in that I want to use with my SGS2 (running CM9). Because MHL out is partially broken and a hdmi to rca adapter cost about 45 € I've searched for other solutions and found two.
1. using 3,5 jack with a rca cable. I saw this with SGS1 at a TV. But I don't find any information about SGS2 and rca out by 3,5 jack. Does it support this? 3,5 to RCA cable will cost about 4 €.
2. Using rasberry pi module and android transporter pi. SGS2 -> WLAN -> RPI -> RCA OUT -> RCA in. RPI, WLAN adapter and rca cable will cost about 40 €.
Does anyone tried to connect a SGS2 to an analogue TV? I read about MHL to HDMI to converter but this doesn't run with CM9. Samsung ROM is no option.

thunderger said:
My car unit has a rca video in that I want to use with my SGS2 (running CM9). Because MHL out is partially broken and a hdmi to rca adapter cost about 45 € I've searched for other solutions and found two.
1. using 3,5 jack with a rca cable. I saw this with SGS1 at a TV. But I don't find any information about SGS2 and rca out by 3,5 jack. Does it support this? 3,5 to RCA cable will cost about 4 €.
2. Using rasberry pi module and android transporter pi. SGS2 -> WLAN -> RPI -> RCA OUT -> RCA in. RPI, WLAN adapter and rca cable will cost about 40 €.
Does anyone tried to connect a SGS2 to an analogue TV? I read about MHL to HDMI to converter but this doesn't run with CM9. Samsung ROM is no option.
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The 3.5mm jack does not support video out. At all. It doesn't output video to that jack in any form. (http://forum.xda-developers.com/showthread.php?t=1127947) So option 1 is out.
This thread may also be of some interest to you.
I don't know about option 2.

honestly i dont know what the pie thing does. I DO know if you have an HDMI to RCA converter box (maybe $50 if you can find em) you could do MHL from your S2 into the converter, then RCA to your unit. Thats the only way i can think of it working. Unfortunately there is no easy digital to analog video adapter.

HDMI to DVI

Re-visiting this because I didn't get a definitive answer on HDMI to DVI output on all the other post. I have used the Samsung HDMI adapter to watch Netfix, movies on device, and anything on the device on an HDMI monitor and a HD TV and it works great with no problems. Has anyone successfully used a HDMI to DVI cable, with this device? I have an Optima Projector with VGA and DVI inputs. I have tried an expensive $60 HDMI to DVI cabe and a generic $15 one and niether works when attached to the Samsung HDMI adapter. I'm just getting a "No Source Found" message on the projector. Any help is appreciated.

Hmm,
HDMI is a digital only standard. DVI is both digital and analog (has pins for both). A HDMI to DVI cable converts to the digital DVI standard. If your projector does not see the signal, I suspect it is hard wired for analog DVI. To connect to such a device you will need an active converter box that converts the digital HDMI to analog DVI or VGA.
Sent from my GT-P7100 using xda app-developers app

datastar said:
Re-visiting this because I didn't get a definitive answer on HDMI to DVI output on all the other post. I have used the Samsung HDMI adapter to watch Netfix, movies on device, and anything on the device on an HDMI monitor and a HD TV and it works great with no problems. Has anyone successfully used a HDMI to DVI cable, with this device? I have an Optima Projector with VGA and DVI inputs. I have tried an expensive $60 HDMI to DVI cabe and a generic $15 one and niether works when attached to the Samsung HDMI adapter. I'm just getting a "No Source Found" message on the projector. Any help is appreciated.
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I have also tried using an HDMI to DVI adapter with my LCD monitor that I normally use with my laptop, doesn't work. I think somehow the adapter prevents the HDMI out thing from realizing that there's something connected on the other side. Interestingly enough, HDMI to VGA adapters do work, I imagine because it's an active adapter that puts a load on the output so the tablet knows to output a signal.

Hdmi to dvi audio

Hey quick question, i wanna connect my phone to a lcd computer monitor i have, I already have the samsung hdmi out cable and was thinking of getting a dvi to hdmi cable since the monitor doesnt support hdmi. My problem is that dvi doesnt support audio. so, are there any cheap dvi to hdmi cables that have an audio out? or is there some way of letting the phone output video over hdmi and sending the audio through the headphone slot like normal?