libvlc

I'm trying to do something like this post : Get frame from video with libvlc smem and convert it to opencv Mat. (c++) I can't quite understand the code in this part : sprintf(smem_options , "#transcode{vcodec=RV24}:smem{" "video-prerender-callback=%lld," "video-postrender-callback=%lld," "video-data=%lld," "no-time-sync}," , (long long int)(intptr_t)(void*)&cbVideoPrerender , (long long int)(intptr_t)(void*)&cbVideoPostrender //This would normally be useful data, 100 is just test data , (long long int)200 //Test data ); It says video-data=%lld . What does it mean? Where is it taking data from?

I am trying to make use of libVLC python bindings to play files after reading them into memory. I have the following code that reads a valid video file into the memory. I need to now play the video directly from the memory. import vlc File1 = open('vid.webm','rb') Axel = File1.read() Now i need to play the contents in Axel, how can I do this. Information on how to do this in C, Java etc too can help. Edit: Understood I will have to use the imem module but can't find any help regarding how to get it done. to do this you have to use the imem module of libvlc. This can be really confusing since

I am using VLCMediaPlayer class from the MobileVLCKit library to make an audio streaming application. My problem is that when error happens (e.g. incorrect stream url) it automatically alerts its own error message. In my case, I would like to disable that alert message and display my own one. No need to remove this option from source! Simply pass the player option like this: NSArray *options = @[@"--extraintf="]; VLCMediaPlayer *player = [[VLCMediaPlayer alloc] initWithOptions:options]; with recent (MobileVLCKit-prod 2.7.9) of MobileVLCKit you can implement VLCCustomDialogRendererProtocol on

Using LibVLC , I'm trying to save a stream while playing it. This is the python code: import os import sys import vlc if __name__ == '__main__': filepath = <either-some-url-or-local-path> movie = os.path.expanduser(filepath) if 'http://' not in filepath: if not os.access(movie, os.R_OK): print ( 'Error: %s file is not readable' % movie ) sys.exit(1) instance = vlc.Instance("--sub-source marq --sout=file/ps:example.mpg") try: media = instance.media_new(movie) except NameError: print ('NameError: % (%s vs Libvlc %s)' % (sys.exc_info()[1], vlc.__version__, vlc.libvlc_get_version())) sys.exit(1)

Sometimes my application crashes in QWidget::update() that is performing in non-GUI thread. I am developing an application in which receives video frames from remote host and display them on QWidget. For this purpose I use libVLC library that gives to me a decoded image. I receive image in libVLC callback, that is performing in separate libVLC thread. In this callback I'm trying to perform QWidget::update() method. Sometimes application crashes, and callstack is somewhere in this method. Here is the my callback code: //! Called when a video frame is ready to be displayed, according to the vlc

I'm trying to compile VLCKit on Mac OS 10.9 following this wiki : https://wiki.videolan.org/VLCKit/ I have clone git://git.videolan.org/vlc-bindings/VLCKit.git then open VLCKit.xcodeproj in Xcode 5.1 and finally run "Build Everything". But build failed with thoses issues : Run VLC configure PhaseScriptExecution bootstrap /Users/myname/Library/Developer/Xcode/DerivedData/VLCKit- bktcaifqrsqwbodqlfdqgsmkkdeb/Build/Intermediates/VLCKit.build/Debug/Run\ VLC\ configure.build/Script-631A90420D5A007D0014A2CE.sh cd /Users/myname/Documents/PhcDev/VLCKit /bin/sh -c \"/Users/myname/Library/Developer

[UPDATED WITH PARTIAL ANSWER] Here is my code: void cbVideoPrerender(void *p_video_data, uint8_t **pp_pixel_buffer, int size) { // Locking imageMutex.lock(); videoBuffer = (uint8_t *)malloc(size); *pp_pixel_buffer = videoBuffer; } void cbVideoPostrender(void *p_video_data, uint8_t *p_pixel_buffer , int width, int height, int pixel_pitch, int size, int64_t pts) { // Unlocking imageMutex.unlock(); Mat img = Mat(Size(width,height), CV_8UC3, p_pixel_buffer); //cvtColor(img,img,CV_RGB2BGR); } int main(int argc, char ** argv) { libvlc_instance_t * inst; char smem_options[1000]; sprintf(smem_options