Xamarin.Forms Q720p Video Recording

Question

Xamarin.Forms Q720p Video Recording

Universal Camera 276

I have a MediaRecorder that captures High Quality Video. I want it to lower quality to VGA, 720p, 480p etc. I used

		mediaRecorder.SetMaxFileSize((long)(10e6));  
		//mediaRecorder.SetMaxDuration(10000);  
		mediaRecorder.SetAudioSource(AudioSource.Mic);  
		mediaRecorder.SetVideoSource(VideoSource.Surface);  
		mediaRecorder.SetOutputFormat(OutputFormat.Mpeg4);  
		mediaRecorder.SetOutputFile(fileName.AbsolutePath);  
		mediaRecorder.SetVideoEncodingBitRate(10000000);  
		mediaRecorder.SetVideoFrameRate(30);  
		mediaRecorder.SetVideoSize(videoSize.Width, videoSize.Height);  
		mediaRecorder.SetVideoEncoder(VideoEncoder.H264);  
		mediaRecorder.SetAudioEncoder(AudioEncoder.Aac);  
		int rotation = (int)Activity.WindowManager.DefaultDisplay.Rotation;  
		int orientation = ORIENTATIONS.Get(rotation);  
		mediaRecorder.SetOrientationHint(orientation);  
		mediaRecorder.Info += MediaRecorder_Info;  
		mediaRecorder.RoutingChanged += MediaRecorder_RoutingChanged;

//these two lines cause Exception...Removing these two lines executes with High Quality video

                    CamcorderProfile cpVGA = CamcorderProfile.Get(CamcorderQuality.Vga);  
		mediaRecorder.SetProfile(cpVGA);  

                    mediaRecorder.Prepare();

I have also tried CamcorderQuality.Q720p. When I execute the above I get

Java.Lang.RuntimeException: 'Unknown camcorder profile quality'

Any help will be GREAT!!!!

Yonglun Liu (Shanghai Wicresoft Co,.Ltd.) 50,126 Reputation points Microsoft External Staff

2022-06-09T02:13:45.703+00:00

Did you use the function in API 31?

If so, referring to this documentation CamcorderProfile.Get Method we could find it's already deprecated in API 31.

You can try to use this function in your project: CamcorderProfile.GetAll(String, Int32) Method.
Universal Camera 276 Reputation points

2022-06-09T23:01:47.463+00:00
Thank you!

I revert back to API29 without success. Also API29 does not have GetAll. So I went to API31 which has GetAll. but

CamcorderProfile cpVGA = CamcorderProfile.GetAll(cameraId, CamcorderQuality.Qvga);

this does not get resolved because the cameraId that I generated is a string and not Java.Lang.String...
Yonglun Liu (Shanghai Wicresoft Co,.Ltd.) 50,126 Reputation points Microsoft External Staff

2022-06-10T06:55:28.05+00:00

Referring to this official documentation [getAll](https://developer.android.com/reference/android/media/CamcorderProfile#getAll(java.lang.String,%20int\)), we could find that the following tips:

String: the id for the camera. Numeric camera ids from the list received by invoking CameraManager#getCameraIdList can be used as long as they are CameraMetadata#REQUEST_AVAILABLE_CAPABILITIES_BACKWARD_COMPATIBLE and not EXTERNAL. This value cannot be null.

Therefore, we could use string cameraId = manager.GetCameraIdList()[0]; to get the cameraId.

If you remove the part of the profile and use API29, just using mediaRecorder.SetVideoSize(1280, 720); for recording, would the error occur?
Universal Camera 276 Reputation points

2022-06-10T08:36:20.63+00:00

that is how I already get cameraId however GetAll rejects it.

mediaRecorder.SetVideoSize(1280, 720) does execute but without any difference.

what I am expecting that for a 10M video file the time duration will increase as resolution decreases???
Yonglun Liu (Shanghai Wicresoft Co,.Ltd.) 50,126 Reputation points Microsoft External Staff

2022-06-13T09:03:06.71+00:00

Did you use HasProfile method for checking whether your camcorder supported the quality?

Returns true if a camcorder profile exists for the first back-facing camera at the given quality level.

Did you use android.hardware.camera in your project?

Referring to this documentation Camera, we could find that:

This class was deprecated in API level 21.
We recommend using the new API for new applications.android.hardware.camera2.
Universal Camera 276 Reputation points

2022-06-19T03:15:43.663+00:00
I am using the Camera2VideoFragment so its not the Camera API. In the openCamera method

cameraId = manager.GetCameraIdList()[0];

this gives a string that I use in GetAll which is rejected by the compiler. I am not sure how to convert string to Java string???? I am not sure that I am on the right path???

Yonglun Liu (Shanghai Wicresoft Co,.Ltd.) 50,126 Microsoft External Staff

Did you use the sample repo https://github.com/xamarin/monodroid-samples/tree/main/android5.0/Camera2VideoSample?

If so, I've tested the sample and make it usable.

You could modify your mediarecoder part as the following code:

   mediaRecorder.SetAudioSource (AudioSource.Mic);  
   mediaRecorder.SetVideoSource (VideoSource.Surface);  
   mediaRecorder.SetProfile(CamcorderProfile.Get(CamcorderQuality.Q720p));  
   mediaRecorder.SetOutputFile(GetVideoFile(Activity).AbsolutePath);  
   int rotation = (int)Activity.WindowManager.DefaultDisplay.Rotation;  
   int orientation = ORIENTATIONS.Get (rotation);  
   mediaRecorder.SetOrientationHint (orientation);  
   mediaRecorder.Prepare ();

Universal Camera 276 Reputation points

2022-06-22T17:32:34.693+00:00
ABSOLUTELY GENIUS!!!!! Brilliantly simple yet EXTREMELY OBJECTIVE!!!!!

I think this was superseding the quality used in earlier attempts

mediaRecorder.SetOutputFormat(OutputFormat.Mpeg4);

I will test this further. I am not sure how to mark your answer as the solution to the question. If you can please mark it as ANSWER.

Thank You
Yonglun Liu (Shanghai Wicresoft Co,.Ltd.) 50,126 Reputation points Microsoft External Staff

2022-06-29T01:38:30.833+00:00

May I know if you have got any chance to check my answer? I am glad to help if you have any other questions.
Universal Camera 276 Reputation points

2022-06-29T02:18:33.69+00:00
Sorry I don't know how to mark your Post as ANSWER...could you please tell me how to do it or if you can mark it as Answer Please do so!!!!

You solution is...

ABSOLUTELY GENIUS!!!!! Brilliantly simple yet EXTREMELY OBJECTIVE!!!!!

I think this was superseding the quality used in earlier attempts

mediaRecorder.SetOutputFormat(OutputFormat.Mpeg4);

I will test this further. I am not sure how to mark your answer as the solution to the question. If you can please mark it as ANSWER.

Thank You
Yonglun Liu (Shanghai Wicresoft Co,.Ltd.) 50,126 Reputation points Microsoft External Staff

2022-06-29T02:26:20.42+00:00

I can not mark it by myself. Please refer to Accepted answers to get details about how to accept an answer in Q&A.:)

Accepted answer

0 additional answers

Your answer

Yonglun Liu (Shanghai Wicresoft Co,.Ltd.) 50,126 Reputation points Microsoft External Staff

2022-06-09T02:13:45.703+00:00

Did you use the function in API 31?

If so, referring to this documentation CamcorderProfile.Get Method we could find it's already deprecated in API 31.

You can try to use this function in your project: CamcorderProfile.GetAll(String, Int32) Method.
Universal Camera 276 Reputation points

2022-06-09T23:01:47.463+00:00

Thank you!

I revert back to API29 without success. Also API29 does not have GetAll. So I went to API31 which has GetAll. but

CamcorderProfile cpVGA = CamcorderProfile.GetAll(cameraId, CamcorderQuality.Qvga);

this does not get resolved because the cameraId that I generated is a string and not Java.Lang.String...
Yonglun Liu (Shanghai Wicresoft Co,.Ltd.) 50,126 Reputation points Microsoft External Staff

2022-06-10T06:55:28.05+00:00

Referring to this official documentation [getAll](https://developer.android.com/reference/android/media/CamcorderProfile#getAll(java.lang.String,%20int\)), we could find that the following tips:

String: the id for the camera. Numeric camera ids from the list received by invoking CameraManager#getCameraIdList can be used as long as they are CameraMetadata#REQUEST_AVAILABLE_CAPABILITIES_BACKWARD_COMPATIBLE and not EXTERNAL. This value cannot be null.

Therefore, we could use string cameraId = manager.GetCameraIdList()[0]; to get the cameraId.

If you remove the part of the profile and use API29, just using mediaRecorder.SetVideoSize(1280, 720); for recording, would the error occur?
Universal Camera 276 Reputation points

2022-06-10T08:36:20.63+00:00

that is how I already get cameraId however GetAll rejects it.

mediaRecorder.SetVideoSize(1280, 720) does execute but without any difference.

what I am expecting that for a 10M video file the time duration will increase as resolution decreases???
Yonglun Liu (Shanghai Wicresoft Co,.Ltd.) 50,126 Reputation points Microsoft External Staff

2022-06-13T09:03:06.71+00:00

Did you use HasProfile method for checking whether your camcorder supported the quality?

Returns true if a camcorder profile exists for the first back-facing camera at the given quality level.

Did you use android.hardware.camera in your project?

Referring to this documentation Camera, we could find that:

This class was deprecated in API level 21.
We recommend using the new API for new applications.android.hardware.camera2.
Universal Camera 276 Reputation points

2022-06-19T03:15:43.663+00:00

I am using the Camera2VideoFragment so its not the Camera API. In the openCamera method

cameraId = manager.GetCameraIdList()[0];

this gives a string that I use in GetAll which is rejected by the compiler. I am not sure how to convert string to Java string???? I am not sure that I am on the right path???
Yonglun Liu (Shanghai Wicresoft Co,.Ltd.) 50,126 Reputation points Microsoft External Staff

2022-06-20T07:23:22.75+00:00

Did you use the sample repo https://github.com/xamarin/monodroid-samples/tree/main/android5.0/Camera2VideoSample?

If so, I've tested the sample and make it usable.

You could modify your mediarecoder part as the following code:

mediaRecorder.SetAudioSource (AudioSource.Mic); mediaRecorder.SetVideoSource (VideoSource.Surface); mediaRecorder.SetProfile(CamcorderProfile.Get(CamcorderQuality.Q720p)); mediaRecorder.SetOutputFile(GetVideoFile(Activity).AbsolutePath); int rotation = (int)Activity.WindowManager.DefaultDisplay.Rotation; int orientation = ORIENTATIONS.Get (rotation); mediaRecorder.SetOrientationHint (orientation); mediaRecorder.Prepare ();
Universal Camera 276 Reputation points

2022-06-22T17:32:34.693+00:00

ABSOLUTELY GENIUS!!!!! Brilliantly simple yet EXTREMELY OBJECTIVE!!!!!

I think this was superseding the quality used in earlier attempts

mediaRecorder.SetOutputFormat(OutputFormat.Mpeg4);

I will test this further. I am not sure how to mark your answer as the solution to the question. If you can please mark it as ANSWER.

Thank You
Yonglun Liu (Shanghai Wicresoft Co,.Ltd.) 50,126 Reputation points Microsoft External Staff

2022-06-29T01:38:30.833+00:00

May I know if you have got any chance to check my answer? I am glad to help if you have any other questions.
Universal Camera 276 Reputation points

2022-06-29T02:18:33.69+00:00

Sorry I don't know how to mark your Post as ANSWER...could you please tell me how to do it or if you can mark it as Answer Please do so!!!!

You solution is...

ABSOLUTELY GENIUS!!!!! Brilliantly simple yet EXTREMELY OBJECTIVE!!!!!

I think this was superseding the quality used in earlier attempts

mediaRecorder.SetOutputFormat(OutputFormat.Mpeg4);

I will test this further. I am not sure how to mark your answer as the solution to the question. If you can please mark it as ANSWER.

Thank You
Yonglun Liu (Shanghai Wicresoft Co,.Ltd.) 50,126 Reputation points Microsoft External Staff

2022-06-29T02:26:20.42+00:00

I can not mark it by myself. Please refer to Accepted answers to get details about how to accept an answer in Q&A.:)

Answer 1

Hello,

Did you use the sample repo https://github.com/xamarin/monodroid-samples/tree/main/android5.0/Camera2VideoSample?

If so, I've tested the sample and make it usable.

You could modify your mediarecoder part as the following code:

   mediaRecorder.SetAudioSource (AudioSource.Mic);  
   mediaRecorder.SetVideoSource (VideoSource.Surface);  
   mediaRecorder.SetProfile(CamcorderProfile.Get(CamcorderQuality.Q720p));  
   mediaRecorder.SetOutputFile(GetVideoFile(Activity).AbsolutePath);  
   int rotation = (int)Activity.WindowManager.DefaultDisplay.Rotation;  
   int orientation = ORIENTATIONS.Get (rotation);  
   mediaRecorder.SetOrientationHint (orientation);  
   mediaRecorder.Prepare ();

Best Regards,

Alec Liu.

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Xamarin.Forms Q720p Video Recording

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