Media Player error on dedicated server

Development Programming & Scripting
1

hey,
I work on a multiplayer game and for the victory or defeat interface animation we use a video with a media player. On the client, the animation works with no error or warning. but in the dedicated server we have a lot of error :

[2017.08.25-18.08.44:487][ 0]LogLinker:Warning: Can’t find file ‘/Script/MediaAssets’

[2017.08.25-18.08.44:488][ 0]LogUObjectGlobals:Warning: Failed to load ‘/Script/MediaAssets’: Can’t find file ‘/Script/MediaAssets’

[2017.08.25-18.08.44:488][ 0]LogLinker:Warning: Can’t find file for asset ‘/Script/MediaAssets’ while loading NULL.

[2017.08.25-18.08.44:488][ 0]LogUObjectGlobals:Warning: Failed to load ‘/Script/MediaAssets’: Can’t find file for asset ‘/Script/MediaAssets’ while loading NULL.

[…]

[2017.08.25-18.08.44:654][ 0]LogBlueprint:Error: [Compiler ArenaTeamHUD] Error Could not find a function named “Play” in ‘ArenaTeamHUD’.
Make sure ‘ArenaTeamHUD’ has been compiled for K2Node_CallFunction_3775

[…]

[2017.08.25-18.08.44:655][ 0]LogBlueprint:Error: [Compiler ArenaTeamHUD] Error Could not find a function named “OpenSource” in ‘ArenaTeamHUD’.
Make sure ‘ArenaTeamHUD’ has been compiled for K2Node_CallFunction_3205

[…]

[2017.08.25-18.08.44:659][ 0]LogBlueprint:Error: [Compiler ArenaTeamHUD] Error The current value of the ’ MediaSource ’ pin is invalid: PinSubCategoryObject on pin ‘MediaSource’ is NULL and PinSubCategory is ‘’ not ‘self’

maybe the server try to compile media player function. If someone knows how to fix it,

2

Media playback is disabled on dedicated servers. You shouldn’t be running media related code or Blueprints on the server. If you have a good reason to run media on the server (I can’t think of any), you’ll have to modify LaunchEngineLoop.cpp

3

yes, I know it and the play and opensource function is calling only on the client but the server try to compile it when it start, so how can I avoid that the server try to compile it?

I try to put the function on the HUD, on a custom event call only on client, I try to check the authority before call it. but the server still try to compile it.

So, how can I create an object or a event that will be ignore durint the server compilation.

thanks.

4

Ah sorry, I misunderstood. I talked to our Blueprint guy, and the way things are currently set up is indeed problematic. You have three options here:

  1. try to find out which Blueprint is trying to load the Media related assets. This may be another Blueprint loading another Blueprint, etc. Try to arrange your BP in a way so it does not reference Media related assets on the server. This is the only content-only fix. The next two options will require Engine code changes.

  2. Move this line out of the if-statement, i.e. right underneath it:

    #if WITH_ENGINE
    // Load runtime client modules (which are also needed at cook-time)
    if( !IsRunningDedicatedServer() )
    {
    FModuleManager::Get().LoadModule(TEXT(“GameLiveStreaming”));
    }
    FModuleManager::Get().LoadModule(TEXT(“MediaAssets”));
    #endif

  3. Add the following to UMediaSource, UMediaPlayer and UMediaPlaylist:

    virtual bool NeedsLoadForServer() const override
    {
    return false;
    }

5

If you happen to try (3), please let me know if it works. Right now I am favoring that solution, but I have to think about it some more. Thanks!

6

Hey, I work with Lunder and I’m the developper of the project.
I tried the third solution, but unfortunately it doesn’t work. Well, maybe I made a mistake, but from what I’ve made, it doesn’t work.
However, your second solution does work, and we don’t have warnings and errors anymore, thank you! :slight_smile: