title: How to use android camera2 api to record 60 fps video with fixed exposure time
body: <p>I want to implement a app to record 60 fps with fixed exposure time. As device I have the Google Pixel. Since its native camera app can do 60 fps and it has hardware level LEVEL_3, I thought this won't be a problem but I can't get it working. With <code>getSupportedPreviewFpsRange()</code> (from camera api) I get ranges <code>[15, 15], [24, 24], [7, 30], [30, 30]</code> and with <code>getHighSpeedVideoFpsRangesFor</code> (from camera2 api) I get ranges <code>[30, 120], [120, 120], [30, 240], [240, 240], [240, 240]</code>. When I set <code>[60, 60]</code> to <code>CONTROL_AE_TARGET_FPS_RANGE</code> I get error "Fps range [60, 60] in the request is not a supported high speed fps range". </p>
  
  <p>Is it even possible for a custom app to record 60 fps video?</p>
  
  <p>If not, how is it by 120 fps? (I have got 120 fps recording working, but when I set <code>CONTROL_AE_MODE</code> off and manually set the <code>SENSOR_EXPOSURE_TIME</code> and <code>SENSOR_SENSITIVITY</code>, the frame rate again reduces to 30 fps)</p>