I have the following code:
Log.i("xx","A");
media_recorder = new MediaRecorder();
Log.i("xx","B");
media_recorder.setVideoSource(MediaRecorder.VideoSource.CAMERA);
Log.i("xx","C");
media_recorder.setOutputFormat(MediaRecorder.OutputFormat.MPEG_4);
Log.i("xx","D");
media_recorder.setVideoEncoder(MediaRecorder.VideoEncoder.MPEG_4_SP);
Log.i("xx","E");
media_recorder.setVideoSize(320, 240);
Log.i("xx","F");
media_recorder.setVideoFrameRate(15);
Log.i("xx","G");
CamcorderProfile profile = CamcorderProfile.get(CameraInfo.CAMERA_FACING_FRONT,CamcorderProfile.QUALITY_LOW);
Log.i("xx","H");
media_recorder.setProfile(profile);
Log.i("xx","I");
media_recorder.setOutputFile(fname);
When the code is executed, I see the following in my logs;
02-07 16:12:47.628: I/xx(15436): A
02-07 16:12:47.628: I/xx(15436): B
02-07 16:12:47.638: I/xx(15436): C
02-07 16:12:47.638: I/xx(15436): D
02-07 16:12:47.638: I/xx(15436): E
02-07 16:12:47.638: I/xx(15436): F
02-07 16:12:47.638: I/xx(15436): G
02-07 16:12:47.638: I/xx(15436): H
02-07 16:12:47.638: E/MediaRecorder(15436): setOutputFormat called in an invalid state: 4
This has confused me because the call to setOutputFormat
was made between "C" and "D", but the report of the error appears to be immediately after H (never reaching "I"). So now I don't know what is causing the error, and I'm confused about where the error is occurring.
EDIT: I just stepped through the code in the debugger - and sure enough the error occurs during the call to setProfile(profile)... so it would appear that the call made to setOutputFormat (between "C" & "D") must have worked ok, but then setProfile must itself make a second call to setOutputFormat which then fails... is that what's going on?
EDIT: And what does invalid state 4 actually mean? Is there some list somewhere which tells you the meaning of each possible invalid state number 1,2,3,4...etc?
In your above code media_recorder.setOutputFormat(MediaRecorder.OutputFormat.MPEG_4)
is called twice. 1st occurrence called by you in your code between Log.i("xx","C");
& Log.i("xx","D");
and the 2nd occurence called internally in MediaRecorder by your media_recorder.setProfile(profile);
method i.e., between Log.i("xx","H");
& Log.i("xx","I");
.
Because MediaRecorder object should follow the life cycle like below:
Refer setProfile() method in MediaRecoder class click here & compare your code again.
Here is source code of setProfile
method:
public void setProfile(CamcorderProfile profile) {
setOutputFormat(profile.fileFormat);
setVideoFrameRate(profile.videoFrameRate);
setVideoSize(profile.videoFrameWidth, profile.videoFrameHeight);
setVideoEncodingBitRate(profile.videoBitRate);
setVideoEncoder(profile.videoCodec);
if (profile.quality >= CamcorderProfile.QUALITY_TIME_LAPSE_LOW &&
profile.quality <= CamcorderProfile.QUALITY_TIME_LAPSE_QVGA) {
// Nothing needs to be done. Call to setCaptureRate() enables
// time lapse video recording.
} else {
setAudioEncodingBitRate(profile.audioBitRate);
setAudioChannels(profile.audioChannels);
setAudioSamplingRate(profile.audioSampleRate);
setAudioEncoder(profile.audioCodec);
}
}
E.g. it sets outputFormat, videoSize, encoder and frameRate to values from profile. So your code:
Log.i("xx","C");
media_recorder.setOutputFormat(MediaRecorder.OutputFormat.MPEG_4);
Log.i("xx","D");
media_recorder.setVideoEncoder(MediaRecorder.VideoEncoder.MPEG_4_SP);
Log.i("xx","E");
media_recorder.setVideoSize(320, 240);
Log.i("xx","F");
media_recorder.setVideoFrameRate(15);
is at least useless, and maybe during these calls it changes state. Try without it.
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