I haven't found any explanation for this so far. Basically I have a video recording class which works splendidly when setVideoSize() is set to 720 x 480 on my Samsung Galaxy S2.
I want it to record in the highest possible resolution so using CamcorderProfile.QUALITY_HIGH I can get the various highest quality recording properties and set them within my class. This works for file format, video frame rate, encoders and bit rate, however when I attempt to set the video size to the width and height returned by the CamcorderProfile (1920 x 1080), the video recorded is just a green flicker.
I noticed if I changed 720 x 480 to 720 x 481 it did the same thing. Therefore I can only assume this happens when the resolution isn't supported by the phone. However, the camcorder the phone came with can record in 1920 x 1080 and it produces an excellent recording.
I can only assume with such a high resolution I need to set some other parameters differently, but I just cant figure out what they might be.
Has anyone else had this problem?
Thanks in advance for any replies.
I came across this question trying to solve the same problem.
A solution is given over on xda developer http://forum.xda-developers.com/showthread.php?t=1104970&page=8. It seems that you need to set an obscure parameter "cam_mode" for high definition recording to work:
camera = Camera.open();
Camera.Parameters param = camera.getParameters();
param.set( "cam_mode", 1 );
camera.setParameters( param );
In mediarecorder, you can then use
mediarecorder.setVideoSize(1920, 1080);
although this will now also work:
mediarecorder.setProfile(CamcorderProfile.get(CamcorderProfile.QUALITY_HIGH));
(The latter seems to have a video bitrate of 20Mb/s, so you might want to take that down a bit!) I found that I didn't have to set the preview size to 1920x1080.
(edit) You also need to set
parame.setFocusMode(Camera.Parameters.FOCUS_MODE_CONTINUOUS_VIDEO);
or
param.setFocusMode(Camera.Parameters.FOCUS_MODE_INFINITY);
otherwise you get a delay of a few seconds before the camera starts!
As to why Samsung has implemented the Camera in this way, I have no idea. It's certainly not developer friendly!