Problems with duration files Video / Audio

Hi, I have a problem with Dolphin in the length of video and audio files that load on the site. The uploaded files are converted correctly, but the preview is a preview of the file that appear only after you listened to the audio files or view video files.

Hi !

I have similar problem with the duration of the video shown as 00:00 on the public video block, and on the timeline wall block the video duration is shown as __duration_f__

Any clues?

Video length is updated automatically upon first play.

__duration_f__ could appear if you didn't clear cache after 7.2.1 update or 7.2.1 update wasn't applied correctly.