Android :: Real Time Video Screen Capture?
Jul 1, 2010
I need to make a video as a DEMO for one application I have developed. I know that there are some experimental applications that use DDMS and achieve a framerate of 5-6 fps. This framerate is completely insufficient for my purposes since the application has smooth animations that i would like to show. Is there anyone that has found a way to do a real time screen capture on android? Should I settle for a capture of the emulator or a real video done with a real camera?
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Jun 18, 2010
Is there an app that captures what goes on my screen?
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Sep 12, 2010
I am new here and I came from Symbian and Linux, for all the phones I've used there are at least one application for screen capture and one for time clock synchronization, both are very useful and basic task we will do with a smartphone, but on the Android I found none that can work without a 'rooted' phone. I don't know how other phones do it, but I know the reason for a 'rooted' phone is to be able to access the framebuffer for screen capture for example and this may be risky, I suppose it is simply a sub-routine call to the BIOS will do without the need for a complete 'open access' system. I know there is a way to capture the screen without a rooted phone, but the phone must be connected to a PC and I feel this is dumb and inconvenient, I may be completely wrong about Android, please fill me in.
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Sep 24, 2010
I am doing a sample application for transfering realtime video from one android device to an emulator, in device side i can open video cam and a set an output file for it, while the recording is progressing, at the same time i am open a file stream and reading all the content by bytes with respect to avilablity, and writing a socket which is communication with the emulator. At the emulator side i am writing this to another file. When i click the recording stop button, i read the rest of the file from the device side and writing to socket stream. When i check the file size at the both side it is same But i cannot play the file at the emulator is side when i check with vlc, in the device side i can play recorded 3gp file So my doubt, same file i cannot access at the same time when one thread(android camera) is writing to the file or it will correupt?
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Aug 9, 2010
I was wondering if anyone knows of a tutorial explaining how to capture the video from the camera on an Android device and then display the video in real time on the screen? I have looked up MediaRecorder, MediaPlayer, Videoview but they all seem concerned with recording audio/video to a file or playing audio/video from a file or a URL. I simply want to be able to take the data from what the camera is seeing and display it on the screen.
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Feb 19, 2010
I overheard someone say there was an app that blanked or put a decoy screen on the screen while taking video, does anyone know what this app is called, if it exists?
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Sep 19, 2012
Is there an app to capture video when watching let's say YouTube or any video? Was looking for something like that so I could capture my baby boys face as he watches videos .
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Nov 11, 2010
Is there an app that lets you view your frames per second in real time in video games and emulators?
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Jul 28, 2010
After a round of hassle (many thanks to sontaikle), finally i managed to do some screen capture from my Android but right now I am thinking about this. Is there any way I can do a REAL TIME phone simulation on my PC. Its alike TV output from phone to projector (Galaxy S can do that) but I have other Android which have no TV output function from the phone, so I wonder if I connect the phone to PC and get the real time screen output (few second lagging is ok for me as well) to PC than I can project it out via projector during discussion, presentation. I have tried this Emulator, too bad its doesn't project that on the phone on PC. How to install Android SDK and play with Android 2.0 in the emulator - Android and Me
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Mar 23, 2010
I need to load an audio resource and play it, but I also need to be able to modify some parameters (like the volume, or the playback rate) while the audio is being played. For example, I might want to play a 10 seconds audio stream, and change the volume only after 3 seconds. Is there a way to do it? I've been experimenting a little with AudioTrack without results.
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Feb 13, 2010
I'm trying to figure out how to write an app that can decode audio morse code on the fly. I found this document which explains how to record audio from the microphone in Android. What I'd like to know is whether it's possible to access the raw input from the microphone or whether it has to be written/read to a file.
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Feb 15, 2010
I am currently trying to braodcast real time voice from Android using RTP to other Android phones connected over Wifi Ad-hoc network. I have few questions in this regard,
1. How to control and set the RTP on Android? 2. Which Codec are supported by Android for voice communication? and how to incorporate them?
We are able to record a voice from microphone and store it on SD card for a playback. The next step would be to link the outstream of real time voice with RTP also incorporating Codec
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Jun 10, 2013
I was wondering why Android keeps lagging a bit. I mean, quadcore should be fast enough to stop that from happening right? So I started Googling.
I got this article: [URL] .....
Basically it says this: Android's UI rendering thread does not work in real-time (the priority is not set at that), unlike iOS'. It's just about the one thing that's still better about iOS in my opinion.
How to make this thread render in real-time?
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Aug 12, 2010
Continuing with the question referred in the following link: [How can I capture when time changes in a TimePicker if the keyboard is being used?][1]
[1]: http://stackoverflow.com/questions/3380761/how-can-i-capture-when-time-changes-in-a-timepicker-if-the-keyboard-is-being-used/"How can I capture when time changes in a TimePicker if the keyboard is being used?"
I could solve the problem but it only works when you use the actual keyboard. If you use the soft keyboard I can't get it to work.
I am programming in 1.6 version of the framework.
PS: The fact that I've search everywhere for the answer and have not been able to find it tells me that this must be so very simple or very much complicated.
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Feb 25, 2010
I know you can apply Permissions for Applications on it's manifest.xml file. What I want to know is, can those Permissions be adjusted by the Applications on the fly?Here's my reason: say I have an application that is allowed to do "x", "y", and "z" (SMS, sockets, etc) Permissions. Now lets say I have a logical "user" that connects to this Application, and I want that user to only be able to do "x" and "y", but not "z" Permissions. It would be nice to have the Android Framework handle that instead of having a bunch of "if's" in the App code.
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Mar 13, 2010
I developed and published a game about two months ago. Since then, I've received several negative comments about input lag in the game. Before releasing the game, I already took several measures to hopefully prevent lag from occurring: 1) Game is almost entirely written in native code 2) After initialization, my process never invokes the GC during gameplay (no GC executions from my process show up in the log) 3) Average FPS is generally > 30 fps 4) I tested the game on both a Motorola Milestone and an HTC Magic and I don't experience any noticeable input lag (except perhaps when the GC is executed by other processes) My guess is that the lag that users are experiencing is a result of the GC being invoked by another process. Has anyone been able to address this issue? Specifically, have any game developers been able to achieve a completely lag-free game and thus avoid negative ratings that drag down your app? The only other suspicious thing I've noticed is the following lines showing up in my log any time a SoundPool clip is played: D/AudioHard wareMot ( 1054): AudioMgr:AudioStreamOutMot::standby called D/AudioHardwareMot( 1054): AudioMgr:Output 0xb538 entering standby D/AudioHardwareMot( 1054): AudioMgr:Closing stereo device D/AudioHardwareMot( 1054): AudioMgr:Output 0xb538 exiting standby
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Sep 9, 2009
I want to know the state of SD card is dynamic mounted or not mounted? it's very kind of you if you can give me a demo(for example, use api register Receiver、Broadcast Receiver、on Receive and so on).
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Feb 12, 2009
i need to know about the LocationListener() working in the real time. Does it expect the user(device) to move in order to update the current location details or it automatically updates when ever the gps is enabled? Another query is regarding the getLastKnownLocation(). When is that last known location will be lost and thus returns null... (in realtime).
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Nov 9, 2009
Is there an app for real-time(or at best, delayed) stock reads? I have two apps on my Bold(one real-time and one delayed) and before I switch Id like to make sure Im not losing every application I currently use.
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Aug 1, 2010
I have a widget which is a TimePicker that retrieves the time saved in a field in a database.
Thing is that when the user changes the time value in the widget, this is not being saved in the database.
So I came across the setOnTimeChangedListener method that works like a charm, if you are only using the plus and minus signs in the widget. It does not capture the change if you are using the keyword.
Here is my code:
CODE:................
I've also tried unsuccessfully:
CODE:....................
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Oct 26, 2010
I can use AudioRecord to pull the audio data out. But the format is PCM, which is too huge to sent out through network. Does any one know how to change it to AMR ?
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May 1, 2010
I would like to know if somebody knows a library to changing the playback rate of a track in real time. My idea is to load a track and change its playback rate to half or double. Firstly, I tried with MusicPlayer but is was not possible at all and then I tried with SoundPool. The problem is that with SoundPool I cant change the rate once the track is loaded. Here is the code I am using (proof of concept): Code...
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Sep 14, 2010
I am new for multimedia in Java and I am going to develop an application which can analyze the sound spectrum. I don't know how to get a real time sound from the mic of the android and analyze it. If someone know about any API and method that how to get real time sound and get the values of its spectrum.
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Apr 6, 2009
I want to display the status of the activity execution on the screen using the TextView while activity is executing. I am appending the String messages at different stages of execution in the TextView, which is defined in the Layout main.xml (e.g. TextView.append("Server started..").
For e.g. I am running socket communication application in which my android application is the server and it is receiving the messages from the local desktop. So in this application I want to show "Server started.." message when socket server on android started , then a messge "waiting for message.." and then "message receivied.." when message received by android server.All 3 steps are the part of a single activity.
But in my case, I am getting all 3 messages at a time after activity execution completed. Is there any API available, using which I can show the status during the execution also.
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Jun 23, 2009
I would like to create a video recorder and so far haven't figured out how to set parameters in order to successfully go through MediaRecorder.prepare() method. Executing the following method
public void start() throws IOException{
String state = android.os.Environment.getExternalStorageState();
if(!state.equals(Environment.MEDIA_MOUNTED))
{
throw new IOException("SD card is not mounted. It is " + state + ".");
}
File directory = new File(path).getParentFile();
if(!directory.exists() && !directory.mkdirs())
{
throw new IOException("Path to file could not be created.");
}
recorder.setVideoSource(MediaRecorder.VideoSource.CAMERA);
recorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);
recorder.setVideoEncoder(MediaRecorder.VideoEncoder.H263);
recorder.setVideoFrameRate(15);
recorder.setVideoSize(176, 144);
recorder.setOutputFile(path);
recorder.prepare();
recorder.start();
this.state = VideoRecorderState.STATE_RECORDING;
}
it throws an exception on line recorder.prepare(). Does anyone know how to set parameters in order to be able to capture video?
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Oct 26, 2009
I first have to say that I'm biased, 'cus I like to write music apps (like music generation apps). However, this affects games as well. It's somewhat disappointing how OpenGL has made it into the NDK now but there isn't any NDK methods to get to sound to have faster access. Over the weekend I did some more testing and if you make a "drum" app, for example, and play the sound using either SoundPool or AudioTrack, you will get about a 100ms delay buffer, which is clearly audible (gap).
I made a test app where when you touch the screen, upon the DOWN event, it would play a short sound (like a drum sound). It clearly was not real time responsive or even close - you could hear the delay. I'd be interested to know if anyone who has made a game has any trouble with sounds? It seems like they aren't going to really trigger real time enough if you use SoundPool, for example. Am I completely wrong? Seems like your game is going to perform an action, play a sound, but the sound will have latency which I would think would throw off the game a bit..................
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Jul 27, 2010
I am looking to see if anyone knows of an app in the market that would be able to give me real time traffic updates on traffic jams, construction, accident ahead and perhaps offer an alternate route to bypass it. Can Google MAPS do this? If not, is there an app in the market that can do this? I am hitting the road tomorrow for a road trip and that would come in handy!
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Feb 24, 2010
I would like to be able to capture the video from an android phone camera, and then process this video. Processing involves adding a layer of AR to the live stream. Is this possible on android? Pretty sure it should be. I have looked at the android site [http://developer.android.com/guide/topics/media/index.html] but this seems to be concerned with video capture and storage. I would like to be able to play with the video pre-storage.
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Oct 13, 2009
Android 1.6 supports video capture, however, not all phones will support video capture. Is there a way I can tell if the phone I am running on supports video capture or not?
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Nov 19, 2010
One of the alternative app stores is asking for unaltered, unedited capture from the app as a video. Plus I'm also interested in cleaner video than I get by focusing a camcorder on an Android on a table. Who knows how to do that? I think I found some posts that indicate Mark Murphy may have solved this with a tool that goes through DDMS. If so, I'll get that tool and donate.
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