The VideoLAN Forums

Hi,everyone I am a freshman in the development of VLC. i use the vlc lib to read the rtsp streaming data from an IP camera. The method is to setup a MFC project and libvlc. And then using the parameter "--sout=#duplicate{dst=file,dst=std{dst="C:\movie.avi"}}" to record the stream...

Now i use libvlc to get the rtsp stream from one IP camera. But in the logger there are always warnings like "main video output warning:late picture skipped (****) > (*****)".
if anyone knows the problem, please help me! Thanks very much!!!

Thanks very much!

Thanks for VLC_help's answer!
But how to use it? I mean what's the standard syntax?
like "_asm_ _volatile_ ();"???
Hope for answers. Thanks!

I have compiled vlc1.0.0 successfully and do some changes in the vlc codes, then "make package-win32-base" to get vlc.exe. I use vlc to display the rtsp stream. But the use of CPU achieved 25%. I want to use SIMD assembly language to displace the memory read in vlc. Does vlc support this? ...

Thanks j-b.
Now i have succeeded to do this work according your advice that is to use vmem module. and see some example in the forum about the Qt codes, that is to invoke the lock and unlock callback function.
Thank to all every one's help!

Thanks every body.
i used vmem and the Qt example which can be searched in the forum and succeed to display the rtsp stream.

Thanks vlc_help and everyone.
now i have solved this problem using vmem video output. and see the Qt example.!

Yes, i used gdb. But when give a breakpoint in the file /modules/codec/avcodec/video.c, the program can not run to this point, and a problem occured that i don't understand. Now i do not go this way. I want to use the libvlc which i complied myself. I set up an MFC project in VS2008 by using libvlc ...

if anyone knows how to get each frame rtsp stream data, please help me. very appreciated!!! In the logger, I can see how the program run. (1)first open the path from rtsp; (2)then use LIVE555 to read rtsp stream; (3)then search decoder and get avdecoder(ffmpeg) to decode the video data; (4)last disp...

Would you please give me an example for how to use vmem video output. i am a freshmen for using libvlc. Thanks very much!

"SIZE" is the size of "data.DAT" that is malloc a memory space to place the data.DAT from harddisk.
and the "Size" is the "table" size.
for example, SIZE is (sizeof(int)*1280*720), Size is (1280*720).
Thanks

hi,all today, i writed several codes in the file /modules/codec/avcodec/video.c to read a harddisk file into the memory. But crashed. the codes is as follows: File *f; char *path="F:/data.DAT"; int *table; f=fopen(path,'rb'); tabel = malloc(SIZE); fread(table,sizeof(int),Size,f); then comp...

hi,all now i has set up my own project using libvlc(which got in the dir /vlc.1.0.0/sdk and plugins after make package-win32-base) to read IP camera rtsp stream and display the video in real time. and the problem: is there a callback or register function in the libvlc while getting each frame data f...

Hi,Treze you said you have wrote a c# program that grabs a steam and converts it with the libvlc. Now i has a problem. i want to do some modifies of the raw stream data before display it with libvlc. but i can not find how to get the decoded stream data with libvlc. my steam data is a h264 encoded v...

hi,every body now i has set up a MFC project in VS2008 to use libvlc.lib, libvlccore.lib and the plugins. it used to read rtsp data in real time and display it in my window. the main code is as follows: char path[100]; this->GetDlgItemText(IDC_EDIT1, path, 100); //path is " rtsp://192.168.1.1:6...

i want to get the raw data through rtsp and libvlc and the plugins. is it using the function libvlc_event_attach or others to give a callback function? i found the decoded raw data in the pointer p_pic of the function DecodeVideo in /module/codec/avcodec/video.c. i want to do some changes of the raw...

hi,every body now i has set up a MFC project in VS2008 to use libvlc.lib, libvlccore.lib and the plugins. it used to read rtsp data in real time and display it in my window. the main code is as follows: char path[100]; this->GetDlgItemText(IDC_EDIT1, path, 100); //path is "rtsp://192.168.1.1:60...