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  • Ajouter des informations spécifiques aux utilisateurs et autres modifications de comportement liées aux auteurs

    12 avril 2011, par

    La manière la plus simple d’ajouter des informations aux auteurs est d’installer le plugin Inscription3. Il permet également de modifier certains comportements liés aux utilisateurs (référez-vous à sa documentation pour plus d’informations).
    Il est également possible d’ajouter des champs aux auteurs en installant les plugins champs extras 2 et Interface pour champs extras.

  • Problèmes fréquents

    10 mars 2010, par

    PHP et safe_mode activé
    Une des principales sources de problèmes relève de la configuration de PHP et notamment de l’activation du safe_mode
    La solution consiterait à soit désactiver le safe_mode soit placer le script dans un répertoire accessible par apache pour le site

  • MediaSPIP 0.1 Beta version

    25 avril 2011, par

    MediaSPIP 0.1 beta is the first version of MediaSPIP proclaimed as "usable".
    The zip file provided here only contains the sources of MediaSPIP in its standalone version.
    To get a working installation, you must manually install all-software dependencies on the server.
    If you want to use this archive for an installation in "farm mode", you will also need to proceed to other manual (...)

Sur d’autres sites (12619)

  • OpenCV FFMPEG RTSP Camera Feed Errors

    4 avril, par trn2020

    I'm getting these errors at random times when saving frames from an rtsp camera feed. The errors happen at different times, usually after 100-200 images have been saved, and the errors themselves are not always exactly the same. They cause the images that are saved at the time of the error to be distorted either to the point of being completely grey or contain distorted pixels.

    


    #Frame_142 - [hevc @ 0c3bf800] The cu_qp_delta 29 is outside the valid range [-26, 25].

    


    #Frame_406 - [hevc @ 0b6bdb80] Could not find ref with POC 41

    


    I've tried implementing the code in both python and c++ with the same result. Also tried saving as .png instead of .jpg. The rtsp feed works fine when using imshow to display the camera, the problem only appears to happen when trying to save the frames. From what I can gather the errors have to do with ffmpeg but google isn't much help for these types of errors.

    


    #include <iostream>&#xA;#include &#xA;#include <chrono>&#xA;#include <thread>&#xA;&#xA;using namespace std;&#xA;using namespace cv;&#xA;&#xA;int main() {&#xA;&#xA;    VideoCapture cap("rtsp://admin:admin@192.168.88.97/media/video1");&#xA;    if (!cap.isOpened())&#xA;        return -1;&#xA;&#xA;    for (int i = 0; i &lt; 500; i&#x2B;&#x2B;)&#xA;    {&#xA;        Mat frame;&#xA;        cap >> frame;&#xA;        imwrite("C:\\Users\\Documents\\Dev\\c&#x2B;&#x2B;\\OpenCVExample\\frames\\frame" &#x2B; std::to_string(i) &#x2B; ".png", frame);&#xA;        cout &lt;&lt; i &lt;&lt; "\n";&#xA;        std::this_thread::sleep_for(std::chrono::milliseconds(10));&#xA;&#xA;    }&#xA;&#xA;    return 0;&#xA;}&#xA;</thread></chrono></iostream>

    &#xA;

  • FFmpeg missed packets (from time to time) while copying RTP stream to file

    1er septembre 2017, par Gnitry

    I have and RTP video broadcast stream (using NOVUS – H.264 / MPEG-4 HD/SD Broadcast Encoder). And I have a Windows Server 2012 (Intel Xeon E5-2690, 128Gb RAM) with service which is recording this stream to file (using lastest FFmpeg, calling it as external process). Every 2-5 minutes recording stops and starts again to a new file.

    From time to time there are significant (and not) lags in video. At most these lags are at the beginning file, sometimes in the center/end. Regarding log there are missed packets.

    It could be network problems, but :

    I ran manually from console in parallel another instance of ffmpeg and started to record the same broadcast stream with segmentation by time. And in this case recording is very good (missed packets 1..5 very very rarely), no lags. At moments, when the first ffmpeg records the second ffmpeg has no problems.

    What could be the reason of this behavior ? Two ffmpeg instances run in parallel and read the same udp input, but the first misses packets when the second feels good. No memory problems, no hdd problems, no CPU overload. I also tried to set highest priority of the first ffmpeg process, but it didn’t help. The only difference between them I see is that first ffmpeg is run from service, and the second is run from from local administrator. To be honest, I used vlc as recorder before, but it had the same problems too... And I can surely say that video stream is ok, because it is played in VLC player 24h/day on another PC without lags...

    That is how I run ffmpeg from windows service (C#) :

    _process = new Process();
    
var startInfo = new ProcessStartInfo(@"ffmpeg\ffmpeg.exe");
    
startInfo.UseShellExecute = false;
    
startInfo.RedirectStandardInput = true;
    
startInfo.Arguments = "-loglevel debug -y -ss 1 -i \"" + _url + "\" -vcodec copy -y -an \"" + _outputFileName + "\"";
    
startInfo.CreateNoWindow = true;

    Command to record video automatically from windows service :

    ffmpeg.exe -loglevel debug -y -ss 1 -i "rtp://225.1.1.1:1024" -vcodec copy -y -an "Session-021221.ts"

    Command to record video manually.

    D:\ffmpeg\ffmpeg -i "rtp://225.1.1.1:1024" -vcodec copy -an -f segment -strftime 1 -segment_time 300 "novus-%Y-%m-%d_%H-%M-%S.ts"

    This is part of the log of one of the broken recordings (some other full logs are attached) :

    ...
    
2017.09.01 18R:22:56.171  frame=  172 fps= 45 q=-1.0 size=    2816kB time=00:00:03.45 bitrate=6674.9kbits/s speed=0.909x    
    
2017.09.01 18R:22:56.174  [NULL @ 0000000000a89ee0] ct_type:0 pic_struct:0
    
2017.09.01 18R:22:56.686      Last message repeated 26 times
    
2017.09.01 18R:22:56.687  frame=  199 fps= 46 q=-1.0 size=    3072kB time=00:00:03.99 bitrate=6297.7kbits/s speed=0.926x    
    
2017.09.01 18R:23:04.554  [NULL @ 0000000000a89ee0] ct_type:0 pic_struct:0
    
2017.09.01 18R:23:04.571      Last message repeated 26 times
    
2017.09.01 18R:23:04.571  frame=  226 fps= 47 q=-1.0 size=    3584kB time=00:00:04.53 bitrate=6472.7kbits/s speed=0.939x    
    
2017.09.01 18R:23:04.571  [NULL @ 0000000000a89ee0] ct_type:0 pic_struct:0
    
2017.09.01 18R:23:04.572      Last message repeated 26 times
    
2017.09.01 18R:23:04.572  frame=  253 fps= 47 q=-1.0 size=    4096kB time=00:00:05.07 bitrate=6610.4kbits/s speed=0.948x    
    
2017.09.01 18R:23:04.572  [NULL @ 0000000000a89ee0] ct_type:0 pic_struct:0
    
2017.09.01 18R:23:04.572  frame=  254 fps= 21 q=-1.0 size=    4096kB time=00:00:05.09 bitrate=6584.5kbits/s speed=0.418x    
    
2017.09.01 18R:23:04.572  [NULL @ 0000000000a89ee0] ct_type:0 pic_struct:0
    
2017.09.01 18R:23:04.655      Last message repeated 5 times
    
2017.09.01 18R:23:04.684  [rtp @ 0000000000a3a9a0] max delay reached. need to consume packet
    
2017.09.01 18R:23:04.684  [rtp @ 0000000000a3a9a0] RTP: missed 4147 packets
    
2017.09.01 18R:23:04.685  [rtp @ 0000000000a3a9a0] RTP: PT=21: bad cseq a237 expected=9204
    
2017.09.01 18R:23:04.685  [rtp @ 0000000000a3a9a0] max delay reached. need to consume packet
    
2017.09.01 18R:23:04.685  [rtp @ 0000000000a3a9a0] RTP: missed 4148 packets
    
2017.09.01 18R:23:04.685  [rtp @ 0000000000a3a9a0] Continuity check failed for pid 256 expected 8 got 15
    
2017.09.01 18R:23:04.686  [rtp @ 0000000000a3a9a0] Continuity check failed for pid 272 expected 10 got 15
    
2017.09.01 18R:23:04.686  [rtp @ 0000000000a3a9a0] Continuity check failed for pid 32 expected 13 got 4
    
2017.09.01 18R:23:04.686  [rtp @ 0000000000a3a9a0] Continuity check failed for pid 0 expected 14 got 6
    
2017.09.01 18R:23:04.767  [NULL @ 0000000000a89ee0] ct_type:0 pic_struct:0
    
2017.09.01 18R:23:05.255      Last message repeated 25 times
    
2017.09.01 18R:23:05.256  frame=  286 fps= 22 q=-1.0 size=    4608kB time=00:00:12.51 bitrate=3016.0kbits/s speed=0.971x    
    
2017.09.01 18R:23:05.257  [NULL @ 0000000000a89ee0] ct_type:0 pic_struct:0
    
2017.09.01 18R:23:05.77      Last message repeated 26 times
    
2017.09.01 18R:23:05.77  frame=  313 fps= 23 q=-1.0 size=    5120kB time=00:00:13.05 bitrate=3212.5kbits/s speed=0.974x    
    
2017.09.01 18R:23:05.773  [NULL @ 0000000000a89ee0] ct_type:0 pic_struct:0
    
2017.09.01 18R:23:06.287      Last message repeated 26 times
    
2017.09.01 18R:23:06.288  frame=  340 fps= 24 q=-1.0 size=    5376kB time=00:00:13.59 bitrate=3239.2kbits/s speed=0.977x    
    
2017.09.01 18R:23:06.29  [NULL @ 0000000000a89ee0] ct_type:0 pic_struct:0
    
2017.09.01 18R:23:06.803      Last message repeated 26 times
    
2017.09.01 18R:23:06.804  frame=  367 fps= 25 q=-1.0 size=    5888kB time=00:00:14.13 bitrate=3412.2kbits/s speed=0.979x    
    
2017.09.01 18R:23:06.808  [NULL @ 0000000000a89ee0] ct_type:0 pic_struct:0
    
2017.09.01 18R:23:07.324      Last message repeated 26 times
    
2017.09.01 18R:23:07.324  frame=  394 fps= 26 q=-1.0 size=    6144kB time=00:00:14.67 bitrate=3429.5kbits/s speed=0.981x   
    
...

    Some full logs :

    Full log #1

    Full log #2

  • how to play audio files using ffmpeg

    6 juin 2012, par user1426122

    I'm using ffmpeg to make a music player, i want to know the function to play the music and pause the music. The have searched several times about it but it, but didn't find a workable answer.

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