[android-developers] Video with MediaRecorder
yeah you probably want to capture to /sdcard/
/videotest.3gp most definitely is not writable to a regular android app!
other than that your code is pretty much the same as mine.
Hi Jason, perhaps you could help me with my code. I was trying to
capture video for two weeks now without success :(
This is my complete code
public class VideoCapture extends Activity
implements SurfaceHolder.Callback {
private static final String TAG = JTrek Video Capture;
private SurfaceView surfaceView;
private SurfaceHolder surfaceHolder;
private MediaRecorder recorder;
private String videoFile = videotest.3gp;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
surfaceView = (SurfaceView)findViewById(R.id.surface);
surfaceHolder = surfaceView.getHolder();
surfaceHolder.addCallback(this);
surfaceHolder.setType
(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
setRequestedOrientation
(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
prepareVideoCapture();
}
public void prepareVideoCapture() {
/* Create a MediaRecorder */
recorder = new MediaRecorder();
Log.i(TAG, Media recorder created);
try {
OutputStream stream = openFileOutput(videoFile,
MODE_WORLD_WRITEABLE);
stream.write(0xA);
stream.close();
} catch(IOException ioException) {
Log.e(TAG, VIDEO: An error creating the output file.);
}
File file = getFileStreamPath(videoFile);
Log.i(TAG, File exists? : + file.exists());
recorder.setAudioSource(MediaRecorder.AudioSource.MIC);
recorder.setVideoSource(MediaRecorder.VideoSource.CAMERA);
recorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);
recorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);
recorder.setVideoEncoder(MediaRecorder.VideoEncoder.H263);
recorder.setOutputFile(this.videoFile);
Log.i(TAG, Media recorder parameters set);
recorder.setPreviewDisplay(surfaceHolder.getSurface());
Log.i(TAG, Preview Display set to surface holder!);
}
//
//SURFACE CALLBACK
IMPLEMENTATION
//
public void surfaceCreated(SurfaceHolder holder) {
Log.e(TAG, surfaceCreated);
try {
recorder.prepare();
} catch (IllegalStateException e) {
Log.e(TAG, e.toString());
} catch (IOException e) {
Log.e(TAG, THE ERROR IS HERE!: + e.toString());
}
Log.i(TAG, Media recorder prepared for video capture!);
try {
recorder.start();
} catch (IllegalStateException e) {
Log.e(TAG, e.toString());
}
Log.i(TAG, Video capture started!!);
}
public void surfaceChanged(SurfaceHolder holder, int format, int
w, int h) {
Log.e(TAG, surfaceChanged);
}
public void surfaceDestroyed(SurfaceHolder holder) {
Log.e(TAG, surfaceDestroyed);
}
//
protected void onStop() {
// Stops the media recorder object
recorder.stop();
recorder.release();
Log.e(TAG, onStop);
super.onStop();
}
}
And this is the LogCat I received when debugging:
=
08-17 10:51:22.400: INFO/Video Capture(709): Media recorder created
08-17 10:51:22.450: INFO/Video Capture(709): File exists? : true
08-17 10:51:22.571: INFO/Video Capture(709): Media recorder parameters
set
08-17 10:51:22.581: INFO/Video Capture(709): Preview Display set to
surface holder!
08-17 10:51:23.132: ERROR/Video Capture(709): surfaceCreated
08-17 10:51:23.181: ERROR/Video Capture(709): THE ERROR IS HERE!:
java.io.FileNotFoundException: /videotest.3gp
08-17 10:51:23.191: INFO/Video Capture(709): Media recorder prepared
for video capture!
08-17 10:51:23.191: ERROR/MediaRecorder(709): start called in an
invalid state: 4
08-17 10:51:23.200: ERROR/Video Capture(709):
java.lang.IllegalStateException
08-17 10:51:23.210: INFO/Video Capture(709): Video capture started!!
08-17 10:51:23.210: ERROR/Video Capture(709): surfaceChanged
I am also wondering if it is mandatory to capture video in external
memory instead of internal memory?
Thanks in advance. I appreciate any help you can give me!..
--
jason.software.particle
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[android-developers] Video with MediaRecorder
i mean the code inside my application which calls MediaRecorder to record video. btw, since 1.5 i have not found any problems with MediaRecorder. the order of the configuration set() methods must be right, but if you read the documentation and look at the error log, the order becomes clear. Hi Jason. What do you mean with my own MediaRecorder code? On Jul 17, 11:50 am, Jason Proctor jason.android.li...@gmail.com wrote: if you're using the camera on the emulator, then you have to disable auto orientation changes to get it to work. at least, i picked this info off the network and it worked for me. i'm doing manual capture with my own MediaRecorder code, and remote capture with the vide capture intent, successfully on emulator and real phone (in this case, ADP and Ion). does it mean there is a bug in this intent android.provider.MediaStore.ACTION_VIDEO_CAPTURE is anybody have luck? On Mon, Jul 13, 2009 at 9:11 PM, hanged_man mailto:majd...@gmail.commajd...@gmail.com wrote: Muhammad, i tried the issue locally and it seems to be something wrong with the camcorder itself (in the emulator), my previously suggested workaround (http://groups.google.com/group/android-developers/http://groups.google.com/group/android-developers/ browse_thread/thread/60005bb7fff2e14f/eec39e24877d8b42? hl=enlnk=gstq=black+screen+camera+hanged_man#eec39e24877d8b42) works only with the Camera app, i've tested it by not running it via the intents but by running it directly from the home screen, however trying to run the camcorder app results in a black screen and no idea why. And another stupid thing, try running the camcorder first (ofcourse you will get a black screen) then try running the camera and surprisingly you will get another black screen, i remember that i've read somewhere that the camera-related apps hold a lock on certain resource related to the camera which explains why this is happening. Now this is stupid, i was counting on the fact that the camcorder is working and trying to implement my own is going to be painfully annoying :( -- jason.software.particle -- jason.software.particle --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -~--~~~~--~~--~--~---
[android-developers] Video with MediaRecorder
if you're using the camera on the emulator, then you have to disable auto orientation changes to get it to work. at least, i picked this info off the network and it worked for me. i'm doing manual capture with my own MediaRecorder code, and remote capture with the vide capture intent, successfully on emulator and real phone (in this case, ADP and Ion). does it mean there is a bug in this intent android.provider.MediaStore.ACTION_VIDEO_CAPTURE is anybody have luck? On Mon, Jul 13, 2009 at 9:11 PM, hanged_man mailto:majd...@gmail.commajd...@gmail.com wrote: Muhammad, i tried the issue locally and it seems to be something wrong with the camcorder itself (in the emulator), my previously suggested workaround (http://groups.google.com/group/android-developers/http://groups.google.com/group/android-developers/ browse_thread/thread/60005bb7fff2e14f/eec39e24877d8b42? hl=enlnk=gstq=black+screen+camera+hanged_man#eec39e24877d8b42) works only with the Camera app, i've tested it by not running it via the intents but by running it directly from the home screen, however trying to run the camcorder app results in a black screen and no idea why. And another stupid thing, try running the camcorder first (ofcourse you will get a black screen) then try running the camera and surprisingly you will get another black screen, i remember that i've read somewhere that the camera-related apps hold a lock on certain resource related to the camera which explains why this is happening. Now this is stupid, i was counting on the fact that the camcorder is working and trying to implement my own is going to be painfully annoying :( -- jason.software.particle --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -~--~~~~--~~--~--~---
[android-developers] Video with MediaRecorder
can you log the exception and post it? thanks. I am trying to capture video with the same code above but it crash at - recorder.prepare(); cant track what is the problem, does anybody come across similar problem ; any hint? On May 7, 11:50 pm, Jason Proctor ja...@particularplace.com wrote: btw, since streaming movies via HTTP requires the moov atom to be ahead of the mdat atom in the file, it would therefore be handy if MediaRecorder wrote the file like that :-) will this be fixed do you think? wondering whether i should just write that piece of code anyway. -- jason.software.particle -- jason.software.particle --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -~--~~~~--~~--~--~---
[android-developers] Video with MediaRecorder
i set orientation=landscape for my capture activity, which seems to do the right thing most of the time. every now and then however, the phone ignores it and restarts my activity if the user rotates the phone. which they have to do, because the camera only works in landscape. not sure why this would be an intermittent type thing. Hi, Thanks, I got it to work. I have one problem though. When I rotate the phone, using automatic Orientation the onDestroy() method of my activity is called, which effectively also stops capturing. When the activity is recreated, a new capture starts. This means I will now have two files for the same capture since the user didnt choose to stop the capture. (And I need to merge these files). Does anyone know of a way to keep the capture running when rotating the phone? Thanks, Anders On May 6, 8:11 pm, Jason Proctor ja...@particularplace.com wrote: just a tiny fyi here is that i did manage to get video recording working fine in my app. there is however a problem if the surface view fills its parent and the parent is the entire screen. if that happens, then the camera's view of things gets resized but nobody tells the codec, and hence the movie is messed up. it's encoded for one size but the movie metainfo says something else. making the size something smaller than the screen made it work, but it *is* a bug IMHO. -- jason.software.particle -- jason.software.particle --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -~--~~~~--~~--~--~---
[android-developers] Video with MediaRecorder
i don't change it, it gets changed by the Author Driver presumably to avoid colliding with the status bar or somesuch. here's some log output which might illustrate what's going on -- 05-07 11:13:51.516: WARN/AuthorDriver(35): Intended width(480) exceeds the max allowed width(352). Max width is used instead. 05-07 11:13:51.516: WARN/AuthorDriver(35): Intended height(295) exceeds the max allowed height(288). Max height is used instead. however, a bit later on it seems that nobody has told the camera this -- 05-07 11:13:51.686: VERBOSE/QualcommCameraHardware(35): requested size 480 x 320 05-07 11:13:51.686: VERBOSE/QualcommCameraHardware(35): actual size 480 x 320 so the codec is encoding for 480x320, but the surface is only delivering 352x288. hence the corruption. hth j This is a limitation of the hardware, the preview size and encoded size must be the same. I'm not sure how you were able to change the preview size though. I'd like to know the code sequence you used, because it's not supposed to be possible. On May 6, 11:11 am, Jason Proctor ja...@particularplace.com wrote: just a tiny fyi here is that i did manage to get video recording working fine in my app. there is however a problem if the surface view fills its parent and the parent is the entire screen. if that happens, then the camera's view of things gets resized but nobody tells the codec, and hence the movie is messed up. it's encoded for one size but the movie metainfo says something else. making the size something smaller than the screen made it work, but it *is* a bug IMHO. -- jason.software.particle -- jason.software.particle --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -~--~~~~--~~--~--~---
[android-developers] Video with MediaRecorder
yes. the movie file is correctly formed, but the picture is messed up. i've not tried correcting the metadata in the file, but that *should* fix it. either way, AuthorDriver or whoever should be telling QualcommCameraHardware what's going on, IMHO. Wait, when you say corruption, you really mean that there's a mismatch between the metadata and the actual frame size, is that correct? On May 7, 11:17 am, Jason Proctor ja...@particularplace.com wrote: i don't change it, it gets changed by the Author Driver presumably to avoid colliding with the status bar or somesuch. here's some log output which might illustrate what's going on -- 05-07 11:13:51.516: WARN/AuthorDriver(35): Intended width(480) exceeds the max allowed width(352). Max width is used instead. 05-07 11:13:51.516: WARN/AuthorDriver(35): Intended height(295) exceeds the max allowed height(288). Max height is used instead. however, a bit later on it seems that nobody has told the camera this -- 05-07 11:13:51.686: VERBOSE/QualcommCameraHardware(35): requested size 480 x 320 05-07 11:13:51.686: VERBOSE/QualcommCameraHardware(35): actual size 480 x 320 so the codec is encoding for 480x320, but the surface is only delivering 352x288. hence the corruption. hth j This is a limitation of the hardware, the preview size and encoded size must be the same. I'm not sure how you were able to change the preview size though. I'd like to know the code sequence you used, because it's not supposed to be possible. On May 6, 11:11 am, Jason Proctor ja...@particularplace.com wrote: just a tiny fyi here is that i did manage to get video recording working fine in my app. there is however a problem if the surface view fills its parent and the parent is the entire screen. if that happens, then the camera's view of things gets resized but nobody tells the codec, and hence the movie is messed up. it's encoded for one size but the movie metainfo says something else. making the size something smaller than the screen made it work, but it *is* a bug IMHO. -- jason.software.particle -- jason.software.particle -- jason.software.particle --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -~--~~~~--~~--~--~---
[android-developers] Video with MediaRecorder
you're welcome. video recording has been a long difficult road from the massively problematic recording of still camera previews to the comparitively easy ride we have now :-) ideally i'd be able to change the orientation of the camera, but apparently that's a hardware issue and can't be fixed on the G1/ADP at least. Hi, Jason, thank you. That really helped a lot. I no longer see onDestroy being called all the time. Before setting the orientation to LANDSCAPE, the preview display was wrong. The display was rotated 90 degrees and the picture a bit distorted After setting the orientation everything looks the way I would I expect it to be; When in portrait, the preview is in portrait as well as the captured video, and when in landscape both preview and capture is in landscape. In my opinion, this setting should be the default setting. For future reference, here is a snippet of my code. recorder.setAudioSource(MediaRecorder.AudioSource.MIC); recorder.setVideoSource(MediaRecorder.VideoSource.CAMERA); recorder.setOutputFormat(MediaRecorder.OutputFormat.MPEG_4); recorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB); recorder.setVideoEncoder(MediaRecorder.VideoEncoder.MPEG_4_SP); recorder.setOutputFile(filePath); CameraView.thisCameraView.setRequestedOrientation (ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE); recorder.setPreviewDisplay(sv); recorder.prepare(); recorder.start(); CameraView is my activity displaying the preview, that includes my SurfaceView class (sv is the surface of the holder) and camera object. Thanks, Anders On May 7, 8:56 pm, Jason Proctor ja...@particularplace.com wrote: yes. the movie file is correctly formed, but the picture is messed up. i've not tried correcting the metadata in the file, but that *should* fix it. either way, AuthorDriver or whoever should be telling QualcommCameraHardware what's going on, IMHO. Wait, when you say corruption, you really mean that there's a mismatch between the metadata and the actual frame size, is that correct? On May 7, 11:17 am, Jason Proctor ja...@particularplace.com wrote: i don't change it, it gets changed by the Author Driver presumably to avoid colliding with the status bar or somesuch. here's some log output which might illustrate what's going on -- 05-07 11:13:51.516: WARN/AuthorDriver(35): Intended width(480) exceeds the max allowed width(352). Max width is used instead. 05-07 11:13:51.516: WARN/AuthorDriver(35): Intended height(295) exceeds the max allowed height(288). Max height is used instead. however, a bit later on it seems that nobody has told the camera this -- 05-07 11:13:51.686: VERBOSE/QualcommCameraHardware(35): requested size 480 x 320 05-07 11:13:51.686: VERBOSE/QualcommCameraHardware(35): actual size 480 x 320 so the codec is encoding for 480x320, but the surface is only delivering 352x288. hence the corruption. hth j This is a limitation of the hardware, the preview size and encoded size must be the same. I'm not sure how you were able to change the preview size though. I'd like to know the code sequence you used, because it's not supposed to be possible. On May 6, 11:11 am, Jason Proctor ja...@particularplace.com wrote: just a tiny fyi here is that i did manage to get video recording working fine in my app. there is however a problem if the surface view fills its parent and the parent is the entire screen. if that happens, then the camera's view of things gets resized but nobody tells the codec, and hence the movie is messed up. it's encoded for one size but the movie metainfo says something else. making the size something smaller than the screen made it work, but it *is* a bug IMHO. -- jason.software.particle -- jason.software.particle -- jason.software.particle -- jason.software.particle --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -~--~~~~--~~--~--~---
[android-developers] Video with MediaRecorder
btw, since streaming movies via HTTP requires the moov atom to be ahead of the mdat atom in the file, it would therefore be handy if MediaRecorder wrote the file like that :-) will this be fixed do you think? wondering whether i should just write that piece of code anyway. -- jason.software.particle --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -~--~~~~--~~--~--~---
[android-developers] Video with MediaRecorder
Hi, Does anyone know how to use the MediaRecorder to API to capture video? I am writing an application where I want to be able to capture video. I am trying to use the MediaRecorder API in 1.5, which is supposed to support video capture. However, there are no examples in the documentation on how to use this API for video (only for audio, and that works perfect). Basically what I do is the following: final MediaRecorder recorder = new MediaRecorder(); final String filePath; recorder.setAudioSource(MediaRecorder.AudioSource.MIC); recorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP); recorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB); recorder.setVideoSource(MediaRecorder.VideoSource.CAMERA); recorder.setOutputFormat(MediaRecorder.OutputFormat.MPEG_4); recorder.setVideoEncoder(MediaRecorder.VideoEncoder.MPEG_4_SP); recorder.setOutputFile(filePath); recorder.prepare(); recorder.start(); This gives me the following error: E/CameraInput( 37): No surface is available for display E/MediaRecorder( 7609): prepare failed: -2147483648 OK, so I have to have a surface to preview the video? Could be useful I guess, but not something I really need. Could I use the VideoView widget for this, or is that only for playback? Or am I supposed to use a SurfaceView to preview the video? I saw someone use that to capture images, but they used android.hardware.Camera to open the camera and capture a frame, and did not use MediaRecorder. Does anyone have any idea on how to capture video, or even better have some example code? Thanks, Anders --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -~--~~~~--~~--~--~---
