Is there some way to record the HDMI output of the screen?
... but anything that's being fed through HDMI is also on the tablet. This is a little confusing. If it were an HDMI INPUT i could imagine the desire to record, but what exactly are you displaying on an external display that you'd need to record?
elementaldragon said:
... but anything that's being fed through HDMI is also on the tablet.
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Yes and I'm asking if how to record that (like they can on the IPad)
Kermode said:
Is there some way to record the HDMI output of the screen?
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It's easy. Why do you want to record your hdmi output of the screen?
goodintentions said:
It's easy. Why do you want to record your hdmi output of the screen?
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Easy like? How?
Why... I can think of two reasons to do it, first if you are a developer the video of your app can be pretty awesome recorded that way, and after editing you get a nice trailer that will make people buy it. The other one is doing video reviews.
From my point of view it's NOT easy: you need an HDMI video capture device and a computer fast enough to handle the massive flow of uncompressed video... maybe the computer part isn't as difficult as it might seem, however the whole HDMI capture device will be around 200 bucks.
You could just get a screen capture app. I don't know of any off the top of my head, but you don't need to capture HDMI....you just need to capture what is being displayed on the tablet screen.
AlexTheStampede said:
From my point of view it's NOT easy: you need an HDMI video capture device and a computer fast enough to handle the massive flow of uncompressed video... maybe the computer part isn't as difficult as it might seem, however the whole HDMI capture device will be around 200 bucks.
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Hm, I see Hauppauge Colossus card has HDMI input - its unencrypted signals of course, but I don't know if the TF101 outputs encrypted or not?
http://www.newegg.com/Product/Product.aspx?Item=N82E16815116065
Kermode said:
Hm, I see Hauppauge Colossus card has HDMI input - its unencrypted signals of course, but I don't know if the TF101 outputs encrypted or not?
http://www.newegg.com/Product/Product.aspx?Item=N82E16815116065
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Uhm, nice price. Not full hd, but especially if it's for 720p that could be a good choice... still I have to admit I'm not sure about the kind of output from the Transformer. My guess is that it's encrypted to allow viewing of protected content... but it's just a guess.
You'd think the tablet could switch to protected if it was showing protected content, but i fear you are right.
- YouTube: Asus Transformer HDMI Screen Capture
- YouTube: ..and the accompanying HowTo
Many these will help - the first one has some suggested capture cards in the flaffle
..also be aware of HDCP before parting with any hard cash!
Note: HDMI out reported not working with Google Video
Yeah, we need a capture card, we already got that.
And if that first video is to be believe the transformer is outputting encrypted rubbish.
The whole idea behind HDMI is to prevent digital copying. A compromise by the major studios mandated before they would release their HD digital content
Rumbleweed said:
The whole idea behind HDMI is to prevent digital copying.
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False. The idea behind HDMI is to transmit high resolution imagery in a digital format.
Copy prevention CAN be employed, but it doesn't have to be.
(and of course if the sole purpose is to make a copy of some copyrighted material that will always happen, all it takes is ONE person to succeed then it spreads like wildfire)
The resolution the TF101 outputs to the TV is exactly the same as the resolution of the screen (save the 80pixel on the bottom) making the HDMI out 1280x720. If you record the stuff screen, it should suffice quality-wise.
frosty5689 said:
The resolution the TF101 outputs to the TV is exactly the same as the resolution of the screen (save the 80pixel on the bottom) making the HDMI out 1280x720. If you record the stuff screen, it should suffice quality-wise.
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What do you mean 'record the stuff screen' ?
Rumbleweed said:
The whole idea behind HDMI is to prevent digital copying. A compromise by the major studios mandated before they would release their HD digital content
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Click to collapse
Kermode said:
False. The idea behind HDMI is to transmit high resolution imagery in a digital format.
Copy prevention CAN be employed, but it doesn't have to be.
(and of course if the sole purpose is to make a copy of some copyrighted material that will always happen, all it takes is ONE person to succeed then it spreads like wildfire)
Click to expand...
Click to collapse
Isn't it HDCP that is meant to prevent digital copying? And I believe HDCP is the reason why Panasonic LCD TVs are unable to show the output of the TF - am I wrong?
Kermode said:
What do you mean 'record the stuff screen' ?
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Sorry, I was typing that at 2 AM. If you record the stuff on the screen, it will be the same if not better quality than using a Capture Card to record the HDMI out simply because they're both 720p but recording the screen will not record the extra grain that resulted as interference when transmitting signal out of the mini-HDMI port.
I can't speak to the Hauppauge card specifically, but I own a Blackmagic Intensity Shuttle, which captures HDMI just fine on other devices at up to 1080i / 1080p, and it won't work with the Transformer.
http://www.blackmagic-design.com/products/intensity/
vlbaindoor said:
Isn't it HDCP that is meant to prevent digital copying?
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Yes, HDCP is the "High-bandwidth Digital Content Protection" whereas HDMI is simply the "High-Definition Multimedia Interface "
vlbaindoor said:
And I believe HDCP is the reason why Panasonic LCD TVs are unable to show the output of the TF - am I wrong?
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Don't know about that - it displays fine on my Philips.
frosty5689 said:
Sorry, I was typing that at 2 AM. If you record the stuff on the screen, it will be the same if not better quality than using a Capture Card to record the HDMI out simply because they're both 720p but recording the screen will not record the extra grain that resulted as interference when transmitting signal out of the mini-HDMI port.
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Click to collapse
But record HOW?
knoxploration said:
I can't speak to the Hauppauge card specifically, but I own a Blackmagic Intensity Shuttle, which captures HDMI just fine on other devices at up to 1080i / 1080p, and it won't work with the Transformer.
http://www.blackmagic-design.com/products/intensity/
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That's depressing.
So the conclusion is, you can't record the screen?
Related
I have gotten a TF101 to test it out as a supplementary mobile client.
We are running Citrix and I have a desktop published throug Citrix Receiver. I have found keyboard and mouse that works with this wonderful machine but I want to have an external display also.
But I find the HDMI support quite bad. The content fills more than the TV Screen and I cannot change the screen resolution. I would like to have a larger screen resolution on the external display but cannot find any way to do this.
I have a LG Optimus 3D phone and on that I can adjust a lot of options on the HDMI port so it should be possible.
One snag: I am testing out this to be used in large scale for hundreds and eventually thousands of users so this needs to be working on completely stock operating system.
Maybe the Asus HDMI to VGA Adaptor is something to think about?
http://www.asus.com/Peripherals_Accessories/Eee_Pad_Accessories/Mini_HDMI_to_VGA_Cable/
modmatt said:
Maybe the Asus HDMI to VGA Adaptor is something to think about?
http://www.asus.com/Peripherals_Accessories/Eee_Pad_Accessories/Mini_HDMI_to_VGA_Cable/
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Ok. I got this one and it almost fills my need. I need to get a higher screen resolution on the external display. 1280x720 is way to small for a permanent workstation. At least with the tools I use.
Maybe I just have to wait for ICS to get this working?
Are you trying HDMI on a TV or a monitor? If a TV does it look washed out and a little zoomed in? TV's have some over scan options that really mess with the signal from PCs. Look around the menu options of the TV and see if you can turn it off, alot of em can't tho. Just google HDMI PC overscan and you'll get a better picutre of what I'm talking about.
For res I don't think it can do better than 720 and I've never seen any options for it. I'd call up Asus if your going to be making a decision that could mean eventually thousands of sales for them.
Also don't forget that they said they're launching the Windows 8 Transformer this year. That should suit your needs beautifully.
How are you accessing your Citrix Desktop? Using the Receiver? Or is there another app specifically for Citrix Desktop access?
EDIT: Never mind, the VDI i was trying to access was taken down recently by the systems team. Do'h. Time to build a server.
Me personally I've been using the citrix beta app, seems to work better.
Tastycakess said:
Are you trying HDMI on a TV or a monitor? If a TV does it look washed out and a little zoomed in? TV's have some over scan options that really mess with the signal from PCs. Look around the menu options of the TV and see if you can turn it off, alot of em can't tho. Just google HDMI PC overscan and you'll get a better picutre of what I'm talking about.
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I tried with the VGA adapter on my 22" samsung syncmaster and the desktop filled the screen perfectly. Via HDMI to my 42 inch HDTV I got overscan problems.
It is though the monitor I need to use to acheive my goal of using it as a citrix thin client. I hope we can manipulate the HDMI output more in ICS. It would be nice to use the monitor's native resolution (1680x1050).
Tastycakess said:
Me personally I've been using the citrix beta app, seems to work better.
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Agreed. It has more options and seems more stable. Go figure.
The TF101 does not support greater than 720p output for mirroring. No word from Asus if they will ever bump it up to 1080p capability, since the Tegra 2 already struggles with 1080p video playback. You should wait for the TF700T for full 1080p output.
earlyberd said:
The TF101 does not support greater than 720p output for mirroring. No word from Asus if they will ever bump it up to 1080p capability, since the Tegra 2 already struggles with 1080p video playback. You should wait for the TF700T for full 1080p output.
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Actually 1080p is not what I need. 1280 is more than enough horisontal resolution, but 720 vertical is too little. If it could output 1280x1024 on an external monitor I'd be very happy.
What I say is that there should be an alternative to mirroring on the HDMI port. With the dock and usb ports the interal screen could be switched off and a resolution of choice be shown on the HDMI-connected display.
Anyone who's got the phone yet tested if the One S outputs 720p through HDMI?
It's basically the only thing I can't find, I did however find that the One X does, but it has got a 720p screen itself.
Michael
Hello,
I have connected the one S to my sony HD TV.
the result is a bit disappointing for two reasons:
quality is not so good
latency for example when slide photos is high
I'm using a MHL cable from PNY:
PNY Adaptateur MHL (Mobile High-Definition Link) vers HDMI®
supposed to be compatible up to 1080p.
I didn't check yet the format resulting from TV point of view. I will try to find that and tell you.
For photos on TV, the Sony and HTC integrated DLNA is far better but not working all the time(seems that the TV is not visible as DLNA client all the time)
Bonus question: Is there a difference from using an MHL-adapter og the wireless dlna thingy?
Probably more lag with the wireless. Its not the best i've used it on 1080p and 720p, I think its outputting the native resolution of the phone.
Anyone got some new inputs? Thank you
honeyb said:
Anyone got some new inputs? Thank you
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I am looking forward to getting a bluetooth keyboard&mouse combo and an MHL cable.
I am surprised that it doesn't do 1080p, I thought that was native to ICS and that the GPU/CPU is the same as the One X
DownloaderZ said:
I am looking forward to getting a bluetooth keyboard&mouse combo and an MHL cable.
I am surprised that it doesn't do 1080p, I thought that was native to ICS and that the GPU/CPU is the same as the One X
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Click to collapse
Yeah I thought it could do that too, and the reports of lag when outputting is kinda strange. It should be fast enough at half of full hd..
I have tested again MHL after upgrading to 2.21. Now scrolling in the gallery is smooth and videos are read in full 1080p(recognized by the tv).
I even have tested games, it's awesome!
sent from my buggy HTC One s. Home button crazy handset.
Hi, I have a Sony Bravia W6 42" and I was thinking that if I buy a MHL cable for the S4, then I will be able to connect the phone to the TV and will be able to watch movies in full screen, those 1920x800 resolution ones which are normally can't watch in full screen, without those disgusting black bars!
My question is, what about quality? Will the picture quality degrade if I watch via MHL, than watching through a PHD or a Pen drive?
If someone has already experience in this matter kindly input here.
Thanks.
No one? I really need to know this.
Interested as well
Sent from my SAMSUNG-SGH-I337 using xda app-developers app
I've used MHL on my S4 and my LG3DTV so I'll leave my first impressions. I'll try it again tonight to just be absolutely concrete but here's my immediate thougths.
1.) You need to make sure your MHL adapter supports the S4. There are some 5 pin ones and 11 pin ones. I have the Samsung adapter so I'm fine but make sure you get the right one.
2.) The black bars are part of the aspect ratio. Our screen is 16:9 so if your movie is 16:9 it'll fill the whole screen. Some movies use wider aspect ratios so you'll get the black bars on the top and bottom. I'll check tonight if you get the bars outputting to TV. I can't remember that.
3.) I believe there is some overscan (rather underscan) when outputting via MHL. It seems like I had a black border all the way around when I played a few games on my TV with MHL and a bluetooth controller (which is awesome by the way). Some HD games did fill the screen and was a pretty decent experience (NFSMW, A8, MC4, Osmos).
Again I'll test these out tonight and post some pics with my other phone so you can see for yourself before buying anything.
Daistaar said:
I've used MHL on my S4 and my LG3DTV so I'll leave my first impressions. I'll try it again tonight to just be absolutely concrete but here's my immediate thougths.
1.) You need to make sure your MHL adapter supports the S4. There are some 5 pin ones and 11 pin ones. I have the Samsung adapter so I'm fine but make sure you get the right one.
2.) The black bars are part of the aspect ratio. Our screen is 16:9 so if your movie is 16:9 it'll fill the whole screen. Some movies use wider aspect ratios so you'll get the black bars on the top and bottom. I'll check tonight if you get the bars outputting to TV. I can't remember that.
3.) I believe there is some overscan (rather underscan) when outputting via MHL. It seems like I had a black border all the way around when I played a few games on my TV with MHL and a bluetooth controller (which is awesome by the way). Some HD games did fill the screen and was a pretty decent experience (NFSMW, A8, MC4, Osmos).
Again I'll test these out tonight and post some pics with my other phone so you can see for yourself before buying anything.
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Click to collapse
Ah finally someone replied. If I buy I will buy the original S4 MHL, that's not a worrying factor. But as you said, there's some under/over processing, hmm, that's what I was wondering! I mean if you clearly see picture quality degradation while playing via MHL in comparison to USB devices (PHD or Pen drive) then I will certainly not be interested, I will take black bars happily over a poorer picture.
jujuburi said:
Ah finally someone replied. If I buy I will buy the original S4 MHL, that's not a worrying factor. But as you said, there's some under/over processing, hmm, that's what I was wondering! I mean if you clearly see picture quality degradation while playing via MHL in comparison to USB devices (PHD or Pen drive) then I will certainly not be interested, I will take black bars happily over a poorer picture.
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picture seems to show nicely providing the res is HD (1920x1080) otherwise some pixelation (as TV and Phone is Full hd)
i get some lag when tapping the screen and overlay to pause skip video appears but when the overlay minimizes video starts again at normal speed.
sound works fine.
if phone is in portrait mode then ull have black on either side on tv .
ratio for tv 16:9 16:10 is fine
I want to buy a very cheap, used Android TV stick for one reason only: to play 1080p video with subtitles on my HDTV. The only thing holding me back is the fear that the manufacturers aware of the limits of their hardware somehow blocked native 1080p feed and instead allow some upscaling. What is it like from your experience?
maciek1988 said:
I want to buy a very cheap, used Android TV stick for one reason only: to play 1080p video with subtitles on my HDTV. The only thing holding me back is the fear that the manufacturers aware of the limits of their hardware somehow blocked native 1080p feed and instead allow some upscaling. What is it like from your experience?
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Hello Maciek,
While I have limited experience with Android HDMI sticks; the one i have (MK809IV 2GB Ram / 8GB Storage) does unfortunately upscale from 720p. However, on the bright side; it does lower bandwidth usage and lower network activity if you're worried about that. I think your best bet is to purchase a $150 USD Android Tablet with a 1080p screen by default and a Micro HDMI out port. I hope you find this information helpful.
Pixel~
iPixelation said:
Hello Maciek,
While I have limited experience with Android HDMI sticks; the one i have (MK809IV 2GB Ram / 8GB Storage) does unfortunately upscale from 720p. However, on the bright side; it does lower bandwidth usage and lower network activity if you're worried about that. I think your best bet is to purchase a $150 USD Android Tablet with a 1080p screen by default and a Micro HDMI out port. I hope you find this information helpful.
Pixel~
Click to expand...
Click to collapse
Do you think this upscaling could be disabled by tinkering with the system files?
maciek1988 said:
Do you think this upscaling could be disabled by tinkering with the system files?
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Click to collapse
Possibly; if you use a different ROM for the device (although it's tedious and a pain to do if it's your first time; plus, there's the risk of breaking your device)....
Pixel~
Very surprised that there is not much info on this, was looking for a usb dashcam solution to plug into Joying units usb to use as DVR.
Any Advice?
Needs to have night vision and decent FOV.
Thanks
gersrt said:
Very surprised that there is not much info on this, was looking for a usb dashcam solution to plug into Joying units usb to use as DVR.
Any Advice?
Needs to have night vision and decent FOV.
Thanks
Click to expand...
Click to collapse
I use a Logitech c920, FOV is great, It doesnt have IR night vision, (that wouldnt work properly with the headlights on anyway I guess), however it seems to work fine in the dark. When I get a chance I will upload a video.
Also, the built in DVR app is dog ****, i use an app from the play store called AutoBoy. It records the camera but also tracks your location which is handy, the other killer feature for me is that it allows you to flip the camera feed 180 degrees, which allows me to mount the camera upside down on the windscreen.
Josh
Great Feedback Josh Thanks.
If you do get a chance that would be great I would like to see fov and image quality.
Thanks Again
gersrt said:
Great Feedback Josh Thanks.
If you do get a chance that would be great I would like to see fov and image quality.
Thanks Again
Click to expand...
Click to collapse
No problems. i just need to pull the car up to the house and upload to youtube (you can do this direct from AutoBoy app) at some point. Give me a few hours and I will try and get it done.
gersrt said:
Very surprised that there is not much info on this, was looking for a usb dashcam solution to plug into Joying units usb to use as DVR.
Any Advice?
Needs to have night vision and decent FOV.
Thanks
Click to expand...
Click to collapse
If its the ROCKCHIP/ARM CPU, then don't waste your time with a dashcam. Those things don't have video encoders, and you can't just capture raw. Means that you'll be software-encoding the video with the super-weak CPU. The performance hit is debilitating. I've been periodically tinkering with the idea of skipping the android layer and using ffmpeg to capture the stream directly, but hard to find the time needed to work on it.
If you get the INTEL unit, it DOES have a video encoder, AND has a much stronger CPU, it can do dashcamming much easier.
So a Logitech c920 (that does x.264 in hardware) won't work well?
Only asking because I was just getting ready to buy one for that very purpose...
DudeInMyrtleBeach said:
So a Logitech c920 (that does x.264 in hardware) won't work well?
Only asking because I was just getting ready to buy one for that very purpose...
Click to expand...
Click to collapse
The hardware encoder will not help you on the rockchip head unit if you go through Android to capture video. It will perform simultaneous decode and encode on the CPU before storing the video file.
Also FYI: It definitely does NOT do x264 in hardware. It will do H.264.
x264 is an open source SOFTWARE H.264 encoder.
https://en.wikipedia.org/wiki/X264
doitright said:
The hardware encoder will not help you on the rockchip head unit if you go through Android to capture video. It will perform simultaneous decode and encode on the CPU before storing the video file.
Also FYI: It definitely does NOT do x264 in hardware. It will do H.264.
x264 is an open source SOFTWARE H.264 encoder.
https://en.wikipedia.org/wiki/X264
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Thanks for clearing this up for me. I really appreciate it! Sounds like that's out. I thought so anyway. It seems that we need to keep as much of a load off these head units as possible to conserve resources... That's ok, I had a plan 'B' anyway lol.
To be honest I've not found the performance hit to be that much at all. I have it running in the background all the time and apart from the splash screen when Autoboy loads I hardly know its there. I've not had any major laggyness with my MTCD for a while now, since Malaysk v6 probably and v7 (based on the last joying rom) is even better.
Hi, I've tried a HD camera but the problem it has the time stamp as well as GPS coordinates and I can't change them, I think the problem is the camera needs to comunicate with the car unit. Other problem was the image quality, I'm not 100% satisfied...so I've bought a Ambarela mini 0805(for 47€). Need to test it, it's on the way ...expect to get it this week. I'll post the results with sample video and images.