android - 是否可以在没有音频源的情况下使用 CamcorderProfile？

Question

我的代码:

mediaRecorder = new MediaRecorder();
mediaRecorder.setCamera(camera);

mediaRecorder.setVideoSource(MediaRecorder.VideoSource.DEFAULT);
mediaRecorder.setAudioSource(MediaRecorder.AudioSource.DEFAULT);

CamcorderProfile profile = CamcorderProfile.get(QUALITY_LOW);
mediaRecorder.setProfile(profile);

它有效。但我只需要录制视频。

如果我不使用 mediaRecorder.setAudioSource()，mediaRecorder.setProfile() 会失败并出现 IllegalStateException。

有什么想法吗？

Answer 1

来自 MediaRecord.setProfile :

public void setProfile(CamcorderProfile profile)

Since: API Level 8 Uses the settings from a CamcorderProfile object for recording. This method should be called after the video AND audio sources are set, and before setOutputFile().

来自 Android - CamcorderProfile docs

Each profile specifies the following set of parameters:

• The file output format
• Video codec format
• Video bit rate in bits per second
• Video frame rate in frames per second
• Video frame width and height,
• Audio codec format Audio bit rate in bits per second
• Audio sample rate
• Number of audio channels for recording.

我想说您可以从所需的 CamcorderProfile 中读取相关的视频相关设置，然后自己明确设置它们。