First create videos in MediaRecorder and then track from video file in EthoVision XT

Aim 

 To create videos that can be used for tracking in EthoVision XT. 

 Prerequisite 

 You have cameras that are supported for tracking in EthoVision XT. 

 Procedure 

 

 Create videos in MediaRecorder. 

 In EthoVision XT, select Track from video file and select the video. See the EthoVision XT Help for details. 

 

 Notes 

 

 IMPORTANT  In theory you can create video files from many different digital cameras with MediaRecorder. However, the quality of the digital camera is essential for accurate tracking. If you use other hardware or cameras than the supported ones, you need to check whether the time information in the video files is correct. 

 

 See  Test an unsupported setup  in  Specifications 

 

 When you use analog cameras, you must adjust the aspect ratio. For digital cameras that are not supported this may also be necessary. 

 

 See see  Adjust the video aspect ratio (analog cameras only) 

 

 Choose  EthoVision  as the  Output Quality  if you record from four cameras simultaneously. With the default settings two cameras are recorded on CPU and two on the video card (GPU). This results in differences in file size. By selecting  EthoVision  as the output quality, all four cameras will be recorded using CPU power. For more information see  Output settings . 

 Choose DanioVision as the Output Quality if you film DanioVison larvae. With this setting the compression of the video files is limited to have an optimal video quality to detect the small larvae. The file size will be larger than with the default Output Quality setting.