Issue with Video Playback After Packaging

Here is chatgpt simple solution:

To play an MP4 video in a widget in Unreal Engine, follow these simple steps:

1. Import the Video File

  • Import your .mp4 file into Unreal Engine (drag it into the Content Browser).
  • Right-click the video file and choose Create Media Player and Video Texture (make sure “Video Output Media Texture” is checked).

2. Create a Media Player Widget

  1. Create a Widget Blueprint (UI_VideoPlayer).
  2. Open the widget and add an “Image” widget.
  3. Set the Image’s Brush → Texture to the Media Texture created earlier.

3. Play the Video

  1. Open the Graph tab in your widget.
  2. Add a “Media Player” variable and set it to your Media Player.
  3. On Event Construct, use the “Open Source” node to play the video:
  • Drag the Media Player variable and use Open Source → Select the Media Source (created with the MP4 file).

4. Show Widget on Screen

  • In your Level Blueprint (or any actor), use:
Create Widget → Add to Viewport

to display the widget.