[open] Onset times with media_player_vlc

rip

Hello,

Is it possible to log the onset times of videos (e.g. the first frame)? I do not see a time_* logging property
for the vlc video event.

Thank you

sebastiaan

Hi,

The easiest way is to insert a simple inline_script just before the media_player_vlc with something like the following in the run phase:

exp.set('time_media_player_vlc', self.time())

This will underestimate the actual playback time by only a very small amount (20 ms on my system). To get an even better estimate, you need a more hackish solution. Add an inline_script after the media_player_vlc with the following in the prepare phase:

exp.items['media_player_vlc'].playbackStarted = True

... and something like the following in the run phase:

t = exp.items['media_player_vlc'].startPlaybackTime
exp.set('time_media_player_vlc', t)

This will access the internal state of the media_player_vlc.

Cheers!
Sebastiaan