projectM and other visualizers with libVLC

[Jona]

Hi.
I reactived an (8 year) old addon for Open Frameworks: https://forum.openframeworks.cc/t/ofxvl ... e/43553/12
For compiling with Visual Studio I use the libVLC nuget package (3.0.20).
Goom and some of the basic visualizers do work, but not glspectrum, projectm and vsxu (they all work with the VLC Player).

libVLC seems to be compiled with this flags:

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main libvlc debug: configured with /builds/videolan/vlc/extras/package/win32/../../../configure '--enable-update-check' '--enable-lua' '--enable-faad' '--enable-flac' '--enable-theora' '--enable-avcodec' '--enable-merge-ffmpeg' '--enable-dca' '--enable-mpc' '--enable-libass' '--enable-schroedinger' '--enable-realrtsp' '--enable-live555' '--enable-shout' '--enable-goom' '--enable-sse' '--enable-mmx' '--enable-libcddb' '--enable-zvbi' '--disable-telx' '--enable-nls' '--host=x86_64-w64-mingw32' '--with-contrib=../contrib/x86_64-w64-mingw32' '--enable-debug' '--enable-qt' '--enable-skins2' '--enable-dvdread' '--enable-caca'

And I would like to add:

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--enable-glspectrum --enable-projectm --enable-vsxu

I already tried to compile it by myself, but without luck.
I am especially interested in the projectM visualization. Strangely projectM does work with VLC 3.0.20 and Windows.

[mfkl]

libvlc binaries from nuget and official vlc releases are the same so this should work without needing a rebuild.

[Jona]

@mfkl thanks. Good to know. So I will try again without recompiling. The issue seems be somewhere in my code then.
In this file libVLC is initialized: https://github.com/Jonathhhan/ofxVLCVid ... CMovie.cpp

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void VLCMovie::initializeVLC() { std::unique_lock<std::mutex> lock{ playerLock }; cout << "init libvlc" << endl; char const* vlc_argv[] = { "--audio-visual=projectm" }; int vlc_argc = sizeof(vlc_argv) / sizeof(*vlc_argv); libvlc = libvlc_new(vlc_argc, vlc_argv); cout << "libvlc: " << libvlc << endl; if (!libvlc) { const char* error = libvlc_errmsg(); cout << error << endl; return; } loadMedia(); mp = libvlc_media_player_new_from_media(m); libvlc_media_parse(m); unsigned int x, y; if (libvlc_video_get_size(mp, 0, &x, &y) != -1) { videoWidth = x; videoHeight = y; } else { videoWidth = 1280; videoHeight = 720; } video_length_ms = libvlc_media_get_duration(m); cout << "Video size: (" << videoWidth << ", " << videoHeight << ")" << endl; cout << "Video length: " << video_length_ms << "(ms)" << endl; libvlc_audio_output_set(mp, "aout_directx"); libvlc_video_set_callbacks(mp, lockStatic, unlockStatic, displayStatic, this); libvlc_video_set_format(mp, "RGBA", videoWidth, videoHeight, videoWidth * 4); eventManager = libvlc_media_player_event_manager(mp); libvlc_event_attach(eventManager, libvlc_MediaPlayerEndReached, vlcEventStatic, this); isVLCInitialized = true; }

And here the debug info regarding the projectm visualizer:

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[000001f340458e00] main visualization debug: looking for visualization module matching "projectm": 4 candidates [000001f34082c790] main window debug: looking for vout window module matching "none": 3 candidates [000001f34082c790] main window debug: no vout window modules matched [000001f340458e00] main visualization debug: no visualization modules matched [000001f340818610] main audio output error: cannot add user visualization "projectm" (skipped)

Are there maybe some other flags that projectM depends on?

[Rémi Denis-Courmont]

Do not override the video output if you want to use projectM. You can provide a window handle if you want to embed.

[Jona]

Thanks. "--audio-visual=goom" works well together with "--no-video" if I play a video (if you mean that with no override), otherwise there is some flickering between the video and goom. But with "--audio-visual=projectm" together with "--no-video" I get the error message I posted above and a white screen.

[Rémi Denis-Courmont]

You are overriding the video output by setting custom callbacks and video format. That breaks projectM, GLspectrum, and generally anything that uses OpenGL.

[Jona]

Thanks a lot. But still not working. But with "--vout=glwin32" and "--vout=opengl" goom seems to look better(?). Also tried to set a custom config path: "--config=vlcrc"

[Jona]

Maybe my issue is, that the vlcrc file has no effect? Also tried with a custom path "--config=vlcrc".

[Jona]

I can actually run projectm in the additional vlc instance that opens with "--extraintf=qt". Somewhere I read, that projectm only works with a vlc GUI, not sure and still searching...
Here the addon for Open Frameworks I am working on: https://github.com/Jonathhhan/ofxVlcPlayer