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Table of Contents




This documentation is current for Release 36.x4. For the Release 1 version of this page, see v.23. For the Release 2 version of this page, see v.47.

Comment Form

  • Jira
    serverIU DLP JIRA
    Release 3.2 introduced a bug that broke the Comments Form. This problem was fixed in Release 3.2.3. Users of earlier 3.2 versions can learn how to fix this bug without upgrading here.

Bulk Actions

Bulk actions only act on first 10 selected items. The rest are silently ignored. This problem was fixed in Release 3.2.2. Release 3.2 and 3.2.1 users can learn how to address it here.
  • Jira
    serverIU DLP JIRA
    Delayed job is slow on the Lancelot server.  If this is a problem, please restart.
  • Collection Management

    • Jira
      serverIU DLP JIRA
      Changing the name of an existing collection or changing its associated unit fails to update the solr index. This problem was introduced in Release 3.2 and fixed in Release 3.2.1. Release 3.2 users can learn how to address it here.

    Content Creation

  • Jira
    serverIU DLP JIRA
    An Avalon item is created every time you choose the Create menu even if you do not associate any media or metadata with the item.  These Avalon items will only be viewable by Collection Staff because they receive access status of "Collection Staff Only" by default.  Avalon items can be deleted individually. 

  • Items can be published without adding any media to them.  To keep them hidden, edit the item and then, on the Preview page, click Unpublish at the top of the item.
    serverIU DLP JIRA
    Long section titles can cause Avalon to throw an exception. To work around this problem keep section titles shorter than 32 characters.
    serverIU DLP JIRA
    Content in the batch ingest file is case sensitive. Be sure not to mix case as this might case problems with the ingest process
  • Section labels are limited to 255 UTF-8 characters
  • Skip Transcoding

    • Jira
      serverIU DLP JIRA
      When streaming using Adobe Media Server, skip transcoding MP3s don't process correctly or playback.

    File Management

    • When using skip transcoding for single or multiple derivatives, Avalon's master file management setting is applied to the highest quality derivative (or single) only. This means that if your application is set to move files to another location (removing them also from the dropbox) then only the highest quality derivative is affected - leaving other two in place. 
    • Jira
      serverIU DLP JIRA


    Group Management

    The Manage Groups interface will allow the creation of a group name with embedded (blank) spaces, but sometimes members of that group will not have access to items in the collection. Solution: For now, don't create groups with spaces in the name–use hyphens or underscores.
    In the Manage Groups interface it is possible for members of group_managers to delete any Ad Hoc groups even if they are not the group creator. If you do try to delete these groups, you will receive a delete confirmation message.
  • Jira
    serverIU DLP JIRA
    Renaming a group may remove permissions from collections and items. To fix this problem be sure to reapply any exceptions after the group has been renamed.
  • Playback 

    If you are using the AMS streaming server on any desktop platform - from a paused player state, clicking the first segment link (only after a later time offset is selected) does not register. You must click it twice for it to register the correct time offset. This is an issue with RTMP playback on AMS and will be addressed in Release 5. 
    If you are using the Red5 streaming server on any desktop platform, the player will not update to a current still image in pause mode. It will display the poster image instead. 
    If you are using an Android device with any server, seeking prior to playback does not update the still image on your video, but it will display the poster image and play from the selected time. 
    If you are using an iPhone - any seeking via structure in the page view will not reflect the current frame but displays the video's poster image. This will not affect the playback from starting at a specific time.   
    Android (all streaming servers) - when navigating timeline via structure links or via the scrubber - Android seeks to HLS segment start instead of time offset and creates strange navigation/playback experiences. It's usually a few seconds off.
  • Jira
    serverIU DLP JIRA
    The poster images may have a strange aspect ratio when in full screen mode. This does not affect video playback which retains the correction dimensions.

  • Player Embedding

    • Avalon uses iframes for video embedding. Embedding should work with sites that support iframes. 
    • Jira
      serverIU DLP JIRA
       For embedded Avalon media to play in Safari, you have to go to Preferences -> Advanced and UNcheck "Stop plugins to save power"


    • If you have a batch with large files added to the dropbox, the batch may fail while the files are being copied.  If that happens, once batch ingest package is completely copied over, delete the error file in the dropbox and the batch will be begin processing again.

    System configurations

    • Jira
      serverIU DLP JIRA
      Uploading a file larger than the value configured in the Master File model will throw an exception instead of being gracefully handled. If routinely uploading files bigger than the default either change it or use the dropbox interface.

    Audio Ingest

    • There was a typo in matterhorn's config file etc/encoding/avalon.properites. Go to your matterhorn's etc/encoding directory and run the following:

      Code Block
      wget -O

      No restart is needed.

    Back to Avalon Collections Guide


    Managing Content

    Manual Creation, Editing, Deletion

    1. Editors are unable to edit collection information - #2083
    2. After saving the Manage Files page without uploading any files, attempting to upload files later results in an error - #2387
    3. Creating large, multi-file media objects using the dropbox interface times out - #2801
    4. Updating collection information deletes additional managers - #2994

    Batch Ingest

    1. When a master file is moved during a batch ingest, the batch fails - #2310
    2. Batch ingest is not working in AWS - #2435
    3. Failed ingest email takes too long to reach the user - #2767
    4. 100-item batch ingest fails - #2922

    Bulk Actions

    1. Selected items are cleared from the Manage Selected Objects page after moving them to a new collection - #2437


    1. Creating a thumbnail for an item without a poster image generates an error - #2093
    2. The Thumbnail button in the media player does not work in Safari - #2959


    1. Using Internet Explorer 11 or Microsoft Edge, items cannot be moved between playlists in the Edit Playlist page - #2121
    2. Adding multiple playlist items from a section structure header places "null" in their description instead of an empty string - #2689
    3. Playlists lose the ability to sort when one of the items is a deleted item - #2824
    4. Adding items to playlists using the 'Add to Playlist' icon in the section panels appends 'null' to the title - #2740

    Item Access

    1. An unpublished item with a lease to a user for a specific date can still be found by the user through browsing or searching - #1686
    2. Published but hidden items with a lease to a user or a group still appear to the user though browsing or searching - #2388
    3. Items in the "Selected Items" list do not disappear and are still available to a user after a lease ends - #1701
    4. Item lease with a date range assigned to an IP address gives access to the item even beyond the date range - #2081
    5. In an Avalon instance integrated with a directory service, users are unable to be added to special access for items - #2896

    Avalon Media Player


    1. Scrolling or dragging the timeline bar to the end of a video causes the video to continuously load - #1684
    2. In some configurations of Chrome on Windows, video load fails and the page needs a refresh in order to load properly - #1633
    3. When the last video in a playlist finishes, the player does not return to its default state - #971
    4. Clicking on a marker beyond the end of a playlist item clip starts the item over again - #2186
    5. On iOS, autoplay does not always automatically start playback for playlists items that have new sources - #2611
    6. Playback doesn't work in Firefox + Linux - #2857 
    7. Selecting a playback quality causes playback to restart at the beginning when using Android - #2876
    8. Internet Explorer 11 has navigation issues with multi-section items and with playlists - #2827
    9. Seeking while paused causes the poster and spinner to remain until play is selected - #2826
    10. MEJS React IIIF Player does not render upon the first load of a work - #180
    11. The track scrubber does not work within Safari - #2960
    12. The track scrubber may behave appropriate if structural metadata is undefined #3047


    1. The media player does not resize when a scroll bar is added to the window - #2215
    2. While using Edge, the volume adjust bar is trimmed short on both top and bottom - #2122
    3. The video end time displays incorrectly at first when launching Avalon on a mobile device - #1689
    4. Switching between tracks in a multi-section piece occasionally causes the previous track to remain highlighted - #1109
    5. On multiple-section items, highlighting on the scrubber lags behind a section - #2602
    6. Enabling or disabling the small scrubber cancels fullscreen mode abruptly - #2531
    7. Hovering over the audio icon in the audio player causes the quality and playlists icons to move out of alignment - #1762
    8. The playlist index table is not adapted for responsive design - #2389
    9. The scrubber bar disappears/does not work at various times when using Android - #2875, #2748
    10. After selecting a playback quality in Android, the quality selector does not disappear - #2874
    11. The zoom scrubber does not load correctly for single-section items with no structural metadata - #2911
    12. Advancing to another section or item cancels fullscreen mode - #2979
    13. Selecting the Add Marker button does not cancel fullscreen - #2978
    14. Within an iFrame, the media player does not resize - #2961


    1. Quality icon does not display within the embedded mejs4 audio player - #2456
    2. Item information icon does not display within the embedded media player of AWS - #2436
    3. In Safari, the text weight in an embedded audio player shifts unexpectedly - #2844
    4. The 'title' attribute in an iframe embed code is encoded incorrectly - #2930


    1. In certain configurations of Firefox, Play/Pause is not accessible with the SPACEBAR - #1644
    2. Tabbing on "Create Collection" screen can escape the modal scope - #969
    3. User can't change video quality using the keyboard - #2678
    4. Keyboard navigation in Safari does not work properly - #2707
    5. Captions are deselected when moving to different section in Safari. Users need to click the captions button to re-enable captions when a new section starts playing - (more information)

    Standalone Media Player

    1. The time displayed at the end of each minute displays both the 60th second followed by the 0th second; e.g. 2:59, 2:60, 3:00 - #1975


    File Management

    1. When a file that is too large is uploaded, an empty master file is created even though an error message is displayed to the user - #1201
    2. Deleting a master file sometimes causes a 500 error - #1392
    3. Some derivative files are unmanaged when set to 'Skip Transcoding' in a batch ingest - #2842

    User Management

    1. A successful login sometimes redirects the user to unexpected pages - #2109
    2. Updating a collection description removes users from staff roles #2994

    User Interface

    1. The Avalon logo and 'expand menu' icon display incorrectly using a small browser window - #2714
    2. Pushing items via Avalon Intercom does not work in some older versions of Microsoft Edge #2883