Movie Playback is Broken in Packaged Builds

Development Platform & Builds
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1

The media framework as of 4.12.4 seems to be completely broken when packaging builds.

Repro project: http://www.filedropper.com/brokenmovieplayback
Repro steps:

  1. Download project
  2. Open the project file
  3. EDIT: apparently changes to scene didn’t get saved before upload - drag two instances of Content/Cube_Blueprint into the map and set the Default/Mp property to be the two media player assets in the project.
  4. Press play and observe that videos play in editor
  5. Package Project (for Windows 64 bit or 32 bit - both seem equally broken)
  6. Run the packaged exe
  7. Observe that videos do not play

Codecs I’ve tried:

  • H.264 with .mp4 wrapper (h.264 known to have issues, although it works fine in editor)
  • MPEG4 with .3gp wrapper (MPEG4 is recommended encoding)
  • Windows Media with WMV wrapper

All of the above play fine in Win10’s video player as well as the UE4 editor.

File paths I’ve tried:

  1. Relative path to video in Content/Movies (this is the path generated when you press the file selection button in the details pane)
  2. Absolute path to video in Project/Content/Movies (this is the path generated when you drag-and-drop the video file into Unreal)
  3. Absolute path to packaged video (this is where UE4 copies the movie when packaging)

All of these work in-editor, none in build.

2

Hey lincoln_nn,

I am going to mark this issue as a duplicate of another post that I responded to earlier.

We can continue the troubleshooting process on that post as well after you have attempted the process I suggested to the other user.

Thank you,