CamcorderProfile.QUALITY_HIGH 分辨率产生绿色闪烁视频 [英] CamcorderProfile.QUALITY_HIGH resolution produces green flickering video

问题描述

到目前为止，我还没有找到任何解释.基本上我有一个视频录制类，当我的三星 Galaxy S2 上的 setVideoSize() 设置为 720 x 480 时，它的效果非常好.

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.

我希望它以尽可能高的分辨率录制，因此使用 CamcorderProfile.QUALITY_HIGH 我可以获得各种最高质量的录制属性并将它们设置在我的班级中.这适用于文件格式、视频帧速率、编码器和比特率，但是当我尝试将视频大小设置为 CamcorderProfile (1920 x 1080) 返回的宽度和高度时，录制的视频只是绿色闪烁.

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.

我注意到如果我将 720 x 480 更改为 720 x 481，它会做同样的事情.因此，我只能假设手机不支持该分辨率时会发生这种情况.但是，手机附带的摄像机可以录制 1920 x 1080 的分辨率，并且录制效果非常好.

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.

我只能假设我需要以不同的方式设置一些其他参数，但我无法弄清楚它们可能是什么.

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.

有其他人遇到过这个问题吗?

Has anyone else had this problem?

提前感谢您的任何回复.

Thanks in advance for any replies.

推荐答案

我遇到了这个问题，试图解决同样的问题.

I came across this question trying to solve the same problem.

xda开发者给出了一个解决方案http://forum.xda-developers.com/showthread.php?t=1104970&page=8.看来您需要设置一个不起眼的参数cam_mode"才能进行高清录制:

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 );

在 mediarecorder 中，您可以使用

In mediarecorder, you can then use

mediarecorder.setVideoSize(1920, 1080);

虽然这现在也可以使用:

although this will now also work:

mediarecorder.setProfile(CamcorderProfile.get(CamcorderProfile.QUALITY_HIGH));

(后者的视频比特率似乎为 20Mb/s，因此您可能希望将其降低一点！)我发现我不必将预览大小设置为 1920x1080.

(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.

(编辑)你还需要设置

parame.setFocusMode(Camera.Parameters.FOCUS_MODE_CONTINUOUS_VIDEO);

或

param.setFocusMode(Camera.Parameters.FOCUS_MODE_INFINITY);

否则您会在相机启动前延迟几秒钟！

otherwise you get a delay of a few seconds before the camera starts!

至于三星为何以这种方式实现相机，我不知道.这肯定对开发者不友好！

As to why Samsung has implemented the Camera in this way, I have no idea. It's certainly not developer friendly!

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