Troubleshooting - Videos

Video video Icon Not Showing for Events with Video

Possible Causes:

The video may not have finished copying or parsing.

Solution:

  • Wait for the video to be copied from your recorders to the network (if applicable).

  • Check whether NEXUS can see the required video files under Tools ‣ Video… (see Video…).

  • Confirm that the videos have been parsed successfully (see Parse Video).

Expected Videos Not Playing for Events with ROV

Possible Causes:

  • If the event has a survey set associated with an ROV, only videos from that ROV will be played back (see Video Playback). Your event may be associated with a survey set that specifies an ROV, but the available videos are not from that ROV.

  • The required video files are not visible to NEXUS.

  • The videos have not been parsed successfully.

  • The filenames of the expected videos do not contain the name of the associated ROV.

Solution:

  • Check whether NEXUS can see the required video files under Tools ‣ Video… (see Video…).

  • Confirm that the videos have been parsed successfully (see Parse Video).

  • Ensure that the filenames of all expected videos contain the name of the ROV associated with the survey set of the selected event.

Expected Next Video Is Not Playing

Possible Causes:

NEXUS automatically plays the next video in a sequence if the following conditions are met:

  • The start time of the next video file is less than 10 seconds after the end time of the current video, or

  • The start clock of the next event is less than 10 seconds from the end clock of the current event, and

  • The channel names in the video filenames match.

If the next video is not playing as expected, it may be due to one or more of the following:

  • The time gap between the end of one video or event and the start of the next exceeds 10 seconds.

  • The channel names in the video filenames do not match.

Solution:

  • Ensure that the time gap between the end of one video and the start of the next is less than 10 seconds.

  • Ensure that the start clock of the next event is less than 10 seconds from the end clock of the current event.

  • Check that each video filename includes a channel name.

  • Confirm that the channel names match exactly between the video files.

Video Plays on One Machine but Not on Another

Possible Causes:

This issue is most likely related to a missing or incompatible codec. NEXUS relies on Windows Media Player to play videos within its video frame, and playback is limited to formats that Windows Media Player can decode. Many video file extensions (such as .avi) are container formats that can encapsulate video streams encoded in various ways. As a result, one .avi file may play successfully while another with the same extension may not, depending on the internal encoding and available codecs on the system.

Solution:

Install the appropriate codec on the affected machine.

To determine which codec is required, use GSpot (GSpot), a reliable tool for inspecting codec details for a particular file:

  1. Run GSpot on both a machine where the video plays and one where it does not.

  2. Drag the video file into GSpot on each machine.

  3. Click the ‘1’ and ‘2’ buttons near the bottom (there are multiple sets - try them all).

  4. Compare the output to identify differences in codec support.

If the required codec cannot be identified, try installing the Shark Codec pack, which supports a wide range of video formats.

Issues with the Audio

NEXUS allows you to control which channels play audio during video playback. This is useful when multiple channels contain identical audio that may be slightly out of sync. For example, if filenames specify start times only to the nearest second, two files could easily play 0.9 seconds apart. The audio controls also allow you to disable audio entirely or selectively mute channels that contain audio.

Solution:

Try the following:

  • If too many channels are playing audio simultaneously, turn off audio on all but one. You can do this using the Channels toolbar menu options on the Video pane of the INSPECTION screen, or by clicking the speaker icon on each channel to mute or unmute it.

  • If no audio is playing, ensure that audio is enabled in the Video pane.

  • If you’re using a headset or external speakers, try unplugging and reconnecting them. This can prompt Windows to route audio correctly.

  • Check the system volume controls in the Windows system tray (bottom-right corner of the screen). To determine whether the issue is with NEXUS or your PC, try playing audio from another application (such as Windows Media Player).

When Playing Video for an Event, Multiple Copies of a Single Video Channel Appear

Possible Causes:

This typically occurs when multiple copies of the same video file exist in one or both of the configured video paths. For example, if your Global Video Path contained Folder1\\Video1.wmv and Folder2\\Video1.wmv (that is, two copies of the same file), or there is one copy of Video1.wmv in the Global Video Path and another in the Temporary Inspection Video Path, NEXUS will identify “both” files as being appropriate for the time range covered by that event, and will therefore display both.

Solution:

Remove any duplicate video files from the configured video paths. The Windows Explorer search feature can help locate files with the same name across multiple folders.