The VideoLAN Forums

Hello Jean-Baptiste, You need a patch to libVLC to do that. Is this something Libvlc user could expect in the future? With the amount of data required for custom 360 stereoscopic videos, copying the texture is killing performance to a point where vlclib becomes useless. I hope you've been giving thi...

Greetings, Using libvlc 3.0.7.1 on windows x64, I'm trying to open a local video mkv/mp4/mov and add meta such as an url. So far, I'm getting: [000002574118ffb0] main meta writer debug: looking for meta writer module matching "any": 1 candidates [000002574118ffb0] taglib meta writer error:...

Any update on how to successfully save meta data?

Greetings,

libvlc 3.0 #include <vlc/plugins/vlc_threads.h> with Visual Studio on Windows 10:

It seems like I'm hitting a wall. For instance:

Error C3861 'poll': identifier not found

I thought this was a cross platform api, what I'm I missing?

Thank you,

Hi,

preparsing() how?

Having execution speed in mind, is there any recommandation like how to turn audio tracks off? Also, set play does seems like a major over head while only one frame is needed. Basically, even if the process stops after fetching the first frame, the audio has been started.

Thank you for your suggestion Jean-Baptiste,

I should have mentioned that I'm on Windows but I'll see what I can do with the VLC-Android. It seems like replacing pthread would get the job done.

Greetings,

Giving a try at fetching and/or generating video thumbnails using LibVLC 3.0. Is there a common way to do this? The idea is to populate a custom file browser (using Qt) that display video files with thumbnails.

thank you,

Hi, thank you for your suggestion. One would think that libvlc_video_set_spu -1 would disable the subtitles but, at least on Windows 10, it has no effect.

Greetings,

How to enable/disable subtitle at run time using libVLC?

Sorry for the double post: Hello and thank you for your support. removing : libdirect3d9_plugin.dll libdirect3d11_plugin.dll does in fact fallback to OpenGL output. One annoying side effect is that the video does flickers, seems like black or missing frames. Why " You may need to tell your app ...

Hello and thank you for your support. removing : libdirect3d9_plugin.dll libdirect3d11_plugin.dll does in fact fallback to OpenGL output. One annoying side effect is that the video does flickers, seems like black or missing frames. Why " You may need to tell your app to look for dlls elsewhere ...

Good idea, delete and create works! One remaining issue with this approach is that using Qt::QWidget::windId as a render target, the QWidget does not refresh after deleting a media player that was using its handle. Seems like the winId (handle) is being messed with somehow. Any hint would be much ap...

Greetings,

How to force OpenGL output with command line in LibVLC 3.x?

Is there any benefit or using DX or OpenGL on windows 10?

Greetings, Is there a way to unbind libvlc_media_player_set_hwnd handle to it's default state, if any? I'd like to change from an output to a window handle to a render to texture while playing the same video. So far, setting libvlc_media_player_set_hwnd to null doesn't seem to have any effect. also,...

Hi Remi, thank you for your feedback. I wasn't aware of the flip overhead indeed. Good to know! AFAIK, the video callbacks are necessary to render to a texture. Texture that could be applied to a 3d mesh like a sphere for 360 rendering. I'd be interested if you could elaborate on this a little. Havi...

In any case, I'd be interested in knowing if anyone had the same issue or I'm taking crazy pills. This is quite annoying in a 3D pipeline where videos are flipped especially in shaders. I thought of flipping the images coming from the FreeImage library but flipping all the images at load time is rat...

Salut Jean-Baptiste, sorry for the delay, I missed your last reply. here is the log when opening video: [00000205f7a01430] transform filter error: Unsupported pixel size 0 (chroma DX11) [00000205f7af58a0] chain filter error: Too high level of recursion (3) [00000205f7af4770] main filter error: Faile...

humm, in that case, --avcodec-hw=none should solve the issue right? Unfortunately, it doesn't. What I'm I missing?

Hello, Still hoping for a piece of advice if it is not too much to ask. I'd really like to migrate to 3.0 but I'm enable to move forward without a fix. There is definitely something that has been broken in 3.0 regarding transformation. I'm guessing the command line options are at fault but I might b...

Oh, I see, thank you. It turns out that the vflip works without a glitch but I get this error when rendering to texture. "--avcodec-hw=none" has no effect. [000001b71691af50] transform filter error: Unsupported pixel size 0 (chroma DX11) [000001b72a613040] chain filter error: Too high leve...

hummm… --avcodec-hw=none should disable hardware acceleration , yes? In any case, would disabling hardware acceleration has an impact on performance, especially with 4k playback? Seems like a dirty hack. Is there any other reason that comes to mind why the vflip works fine on 2.x and not on 3.x vers...

Hell JB, thank yo for your input. In both cases, same results. const Char *l_args[] = { "--avcodec-hw=none", "--video-filter=transform", "--transform-type=vflip", }; m_VLC_Instance = libvlc_new(sizeof(l_args) / sizeof(l_args[0]), l_args); return Unsupported pixel size 0...

Greetings, Coming back to a (presumably) bug that has been introduced in 3.0.0, I'm hoping to find salvation with 3.0.3... no luck so far. While LibVLC (on Windows) had no problem with this feature, vflip on 3.x just doesn't want to work. const Char *l_args[] = { "--video-filter=transform"...

Hi mfkl, thank you for your support. code tag = ... ; the code between these tags does not format properly sometimes, with Windows Edge that is. To prove me wrong... it does work now! ^^ The VLC log doesn't show anything different when the black screen occurs but OpenGL doesn't throw this: High Type...