# Redo a trial

Aim

To record video or track data once again for a trial previously acquired.

important When you redo a trial, you remove the tracks, the events scored manually and the trial control event data (including hardware device data) recorded during that trial.

example 1 You have acquired a trial and realize that you have acquired the data with the wrong detection settings, or the tracks obtained from that trial contain too many missing samples.

example 2 You have acquired video using EthoVision for Trial 12 and realize that something went wrong during the test. You want to record new video and assign it to Trial 12.

Procedure

We assume at this point that you have carried out a trial and a video file corresponding to that trial has been saved.

1.In the Acquisition Settings window, under Options next to Clear and redo a trial, click the Select button.

2.In the Redo Trial window, select the trial that you want to redo.

3.Select one of the options, then click OK.

When tracking from video files:

▪Clear tracks. The tracks are deleted. Choose this option if you want to re-do the trial using a video file different from the current one.

▪Clear tracks but re-use the video reference. As above, however the link to the video file is retained. You can open Acquisition to track from that video file.

When tracking live:

▪Clear tracks. The tracks are deleted. This option is available if you acquired tracks without saving video.

▪Clear tracks but re-use the video. To delete the tracks, not the video file used to acquire those tracks. You can then track again from the video file.

▪Clear tracks and video. To delete the tracks and the associated video and redo the trial anew.

▪Clear video. To clear a trial that has video only. You can then record a new video and acquire tracks. This is the only option available if you acquire data by saving the video first.

See also Clear trials in the Trial List

4.In the Acquisition Settings pane, under Method,

▪If you cleared a trial that used a video file not made with Ethovision XT, choose Track next planned trial. This is the option for redoing the trial from that existing video file.

▪If you cleared a trial with a video file made with EthoVision XT, and deleted that video file, choose Track next planned trial. Alternatively, choose Save video only, track later to record a new video file for that trial without tracking.

▪If you cleared a trial with a video file made with EthoVision XT, but kept the video file, choose Track next saved video file. With this option you re-do the trial for that video file.

▪Choose Track all planned trials if you have a list of planned trials and you want to acquire data for all of them in one go.

5.Under Settings, next to Trial, you see the number of the trial that you are about to acquire.

The Video box shows either Live video or the video file you will track from, depending on the options chosen above.

6.If necessary, click the button next to Video and select the video file to track from.

7.You can now start the trial. Click the Start trial button in the Playback Control window.

Notes

▪The options available next to Select action vary depending on how you acquire the trials. For example, if you track from pre-recorded video files, then only the first two options Clear tracks and Clear tracks but re-use the video reference are available.

▪Before re-doing a trial, always check in the Acquisition Settings pane under Method which option is selected, and under Settings the video file you are going to acquire the trial from.

▪If you track from video recorded with programs other than EthoVision XT, and you want to delete the video file corresponding to the trial you want to redo, you must delete the video manually.

See also

▪Plan your trials

▪Skip trials

▪Clear trials in the Trial List

▪Acquire one trial