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trying the command line, when killing VLC I get an assertion

Assertion Failed !

Program: ...
File: /builds/videolan/vlc/extras/package/win32/..../wgl.c
Line: 286

Expression: winDC != NULL

And same with 640x480 resolution !
BTW : I'm using vlc.exe in the dev SDK directory

OK I will send you a VS project asap, thanks for your help. Update : it is when releasing the media player that the exception seems to be raised (not when reloading it). [EDIT] : I did a VS project to show the issue ... but in the project there is no more issue :). It seems something is just doing w...

I tried using VLC directly modifying the preferences but .. VLC is resizing the window to only 1 display before loading I think :) so I cannot try loading a media when VLC window is extended to both screens. I will try to update quickly the visual studio sample I did to mimic the issue (for VGL outp...

Hi, I did an app where I create a media_player from a media, play the media and then release media & media_player to recreate a new player (I feel it easier to do so since it reinit the media_player). When doing this, it's OK but sometimes libwaveout_plugin is raising exception (access violation...

I will try that but it may be difficult to reproduce with VLC since it is when I release & load media player when changing the media played in OpenGL ... BTW changing the media (releasing media player & media / creating a media player setting it a new media) is generating execption on libwav...

Another issue with GL callbacks :) ... If I set the VLC instance using a huge windows (let's say 2x4K window extended on 2 screens) some crashes occur. Only solution found is to create a little window (1x1 resolution :) ) to instanciate VLC. Is there another way to do it a cleaner way so the app is ...

SOLUTION FOUND ! So ... looking at the sample I could find these points : - no SDL_init was called at start (we may call SDL_Init(SDL_INIT_VIDEO); at start ) - another SDL_GL_SetAttribute must be called : SDL_GL_SetAttribute(SDL_GL_CONTEXT_PROFILE_MASK, SDL_GL_CONTEXT_PROFILE_COMPATIBILITY); - after...

I made some other tests ... it seems the shared context is not working in the sample (I already had issues first time I used gl callback it with SDL2 / Windows ). In resize method the textures & FBO are not created ! Any clues about the way to fix this ? I am really annoyed since all my SDL2 app...

Thanks. I will clean my project so. I use OpenGL ( libvlc_video_engine_opengl ) and I won't have time to try QtGL sample :'( ... GL callbacks changed since last time I used to develop with them : I may try an older release of the VLC4.0.0 SDK and give you a feedback on this. BTW I get the assertion ...

Not really, it is integrated in a software which is not so simple to reduce in size. But ... VLC code is purely the gl callback sample in the SDK. I created a project in VS2019 with the sample of VLC : download me ;) . The app is crashing as soon as media is asked to be played (media loading is OK) ...

Hi,

I updated my software using the last build of VLC (using the openGL callback with libVLC 4). When I try to load a video here is the returned log ( click me !), can someone help me to solve this issue ?
Regards,

Is there any way to use NVDEC from NVidia now (it wasn't possible in april 2019) which seems to take in charge this kind of format or another video decoding acceleration library implemented in VLC ?

Hi,
I would like to play 8K video using OpenGL callbacks (libVLC 4). How should I configure VLC instance to ensure a fluid playback (options to set inside the command line parameters) ?
Regards

I tried using the same media player for multiple files. Before I deleted it to recreate it using libvlc_media_media_new_from_media each time I wanted to change the video (I was hoping t. I only do that once now and use libvlc_media_player_set_media to reuse the first mediaplayer created. But it does...

I used the OpenGL callback sample given by VLC dev team to implement a simple player and mapped keys to stop and reload the video (via SDL events). And that's it ! When stopping the video (deleting the mediaplayer and media) it does not free all the memory (I can see the memory used growing in the t...

I already checked my code (more than twice) before writing a new topic :). I saw something interesting when putting the option "--start-paused" and calling libvlc_mediaplayer_play() , video does not start at all and I cannot see leaks unless I call libvlc_media_player_pause(). Then video p...

[Thanks, I will try that today !] EDIT : In fact, I already put these parameters :) ( "--start-paused", "--play-and-pause", "--no-play-and-stop") ... and the video is well loaded and start paused if I call "libvlc_media_player_play" right after loading (and se...

Hi, I am using libVLC 4 with opengl callbacks to play videos in my application. Everything works pretty well (playing at a different rate, asking for playing/pausing...) but ... I have got rendering issues: - I would like to display the first image of the video pausing the video and asking the user ...

Hi, I try to load /unload many files inside the same application but each time I unload a media+mediaplayer (libvlc_media_player_release/libvlc_media_release) then load (libvlc_media_new_path/libvlc_media_player_new_from_media) I loose some memory (I checked my application and when not calling the l...

I may not understand but tuner-frequency seems to be for tuner device, I was thinking more of an option to limit buffering. I tried with videoInput lib (which is not as complete as libVLC but I would like to compare) and I can get the images really quickly. My device is an IR webcam and I would like...

I tried and I can get the dshow device without any problem now! I tried to add option to the media using quotes since my device name has space in its name but it is not working if so (libvlc_media_add_option(m_media, ":dshow-vdev=\"my device has spaces in its name\""); will fail)...

Here is the full resulting log. Is using avcodec again ! How can I force hardware decoding ? The sample used is the insta pro sample (can be downloaded here . It is the TEST_6K3D.mp4 file) main debug: processing request item: TEST_6K3D.mp4, node: Liste de lecture, skip: 0 main debug: resyncing on TE...

Hi, I am a bit late to answer ... but did not see your posts before ( ouh ! :( ... I though I subscribed with mail notification ... but no). I should be able to decode with my hardware (1070 GPU and i7 CPU). I redo the full log and send it to you tomorrow (EDIT : or today ;) ). Thank you for your he...

Hi,

I didn't see your post before ... Thank you for the link, I will try that this afternoon and give you feedback. This sounds good ! I've already used the add_option method but not with the params given in the thread.
Regards

I managed to delete the metadata using ffmpeg so I can use libVLC to do my own projection but it could be easier to be able to ask VLC not to interpret the "side data" for projection & stereo while opening the media (and keeping the media in its initial format). Moreover I still need t...