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  • Participer à sa traduction

    10 avril 2011

    Vous pouvez nous aider à améliorer les locutions utilisées dans le logiciel ou à traduire celui-ci dans n’importe qu’elle nouvelle langue permettant sa diffusion à de nouvelles communautés linguistiques.
    Pour ce faire, on utilise l’interface de traduction de SPIP où l’ensemble des modules de langue de MediaSPIP sont à disposition. ll vous suffit de vous inscrire sur la liste de discussion des traducteurs pour demander plus d’informations.
    Actuellement MediaSPIP n’est disponible qu’en français et (...)

  • Support de tous types de médias

    10 avril 2011

    Contrairement à beaucoup de logiciels et autres plate-formes modernes de partage de documents, MediaSPIP a l’ambition de gérer un maximum de formats de documents différents qu’ils soient de type : images (png, gif, jpg, bmp et autres...) ; audio (MP3, Ogg, Wav et autres...) ; vidéo (Avi, MP4, Ogv, mpg, mov, wmv et autres...) ; contenu textuel, code ou autres (open office, microsoft office (tableur, présentation), web (html, css), LaTeX, Google Earth) (...)

  • MediaSPIP Player : problèmes potentiels

    22 février 2011, par

    Le lecteur ne fonctionne pas sur Internet Explorer
    Sur Internet Explorer (8 et 7 au moins), le plugin utilise le lecteur Flash flowplayer pour lire vidéos et son. Si le lecteur ne semble pas fonctionner, cela peut venir de la configuration du mod_deflate d’Apache.
    Si dans la configuration de ce module Apache vous avez une ligne qui ressemble à la suivante, essayez de la supprimer ou de la commenter pour voir si le lecteur fonctionne correctement : /** * GeSHi (C) 2004 - 2007 Nigel McNie, (...)

Sur d’autres sites (11680)

  • 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

  • I need a way to calculate time differentials between 2 time variables in Batch

    9 juillet 2022, par Youcef

    first of all here's my little batch script project that I wrote really quickly for video processing convenience with ffmpeg

    


    set start="00:01:52.000"
set finish="00:01:52.000"
set /A duration=24
set /A resolution=1080
set /A framerate=60
set /A filesizeinMB=8
set /A bitrate=(%filesizeinMB%*8192)/%duration%

"%~dp0ffmpeg.exe" -ss %start% -i "%~1" -c:v libvpx-vp9 -an -pass 1 ^
-t %duration% -b:v %bitrate%k -crf 12 -vf fps=%framerate%,scale=-1:%resolution% ^
-auto-alt-ref 1 -lag-in-frames 25 -row-mt 1 -map_metadata -1 ^
-f null NUL

"%~dp0ffmpeg.exe" -ss %start% -i "%~1" -c:v libvpx-vp9 -an -pass 2 ^
-t %duration% -b:v %bitrate%k -crf 12 -vf fps=%framerate%,scale=-1:%resolution% ^
-auto-alt-ref 1 -lag-in-frames 25 -row-mt 1 -map_metadata -1 ^
-f webm "%~dp0%~n1.webm"


    


    As of now, I'm manually imputing start, and duration for the script to work. For convenience, I would like a way to only input start and finish variables without bothering with duration, and having it something like

    


    set /A duration=%finish%-%start%


    


    but before doing that I need to convert the time strings into simple integers or fractionals (seconds of course) And i'm kind of in a loss about how I would approach this
Some help would be greatly appreciated, thank you

    


  • sidxindex : Don’t adjust the Period start time depending on the track start time

    28 novembre 2014, par Martin Storsjö
    sidxindex : Don’t adjust the Period start time depending on the track start time

    This was only necessary to get playback to start with dash.js 1.2.0,
    
it has been fixed in the git version.
    

    The previous behaviour was incorrect - the Period’s start time
    
is irrespective of the actual first timestamp of the contents
    
within the period. The Period start time only says when, within the
    
global timeline, this particular piece should start to be played
    
back.
    

    Signed-off-by : Martin Storsjö <martin@martin.st>
    • [DH] tools/sidxindex.c

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