Resizing video H264
Hello
I'm trying to get the camera API coded data and then write the data to a file. Video codec I use is H264. I want to change the width and height of the video using following code.
error=camera_set_video_property(mCameraHandle, CAMERA_IMGPROP_WIDTH, 540, CAMERA_IMGPROP_HEIGHT, 960, CAMERA_IMGPROP_VIDEOCODEC,CAMERA_VIDEOCODEC_H264 );
But I get an error CAMERA_EINVAL. I also noticed that for the rear camera only 1920 * 1080 and the front camera 720 * 1280 resolutions work. All other resolutions give the same error.
I also tried to get the resolution taken in charge by using the following codeblock:
unsigned int supportedRes;camera_res_t resolutions[100]; camera_get_video_output_resolutions(mCameraHandle, 0, &supportedRes,resolutions); fprintf(stderr, "Resolution error: %s\n",ErrorToString(error).toAscii().constData()); fprintf(stderr, "supported Resolutions %d\n", supportedRes);for(int i =0 ; i < supportedRes; i++){ fprintf(stderr,"Resolution %d: width: %u height: %u\n", i, resolutions[i].width,resolutions[i].height);}
the result is:
13 resolutions supported
Resolution 0: width: height 0: 0
Resolution 1: width: height 6: 3
Resolution 2: width: height 0: 520215
Resolution 3: width: height 17:21
Resolution 4: width: height 0: 0
Resolution 5: width: 1 height: 0
Resolution 6: width: height 0: 1
Resolution 7: width: 1 height: 18
Resolution 8: width: height 0: 0
Resolution 9: width: 1 height: 0
Resolution 10: width: height 0: 1
Resolution 11: width: 1 height: 3
Resolution 12: width: height 0: 4294967295
and do not find the problem.
Any help will be much appreciated.
Your resolution table is not initialized. You asked only camera_get_video_output_resolutions() you say the number of resolutions, because your second parameter is 0. Read the documentation for the function under prior aboiut sizing "description."
Also, always check the return code of these functions and only continue if OK.
Tags: BlackBerry Developers
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