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Autres articles (112)

Script d’installation automatique de MediaSPIP

25 avril 2011, par kent1

Afin de palier aux difficultés d’installation dues principalement aux dépendances logicielles coté serveur, un script d’installation "tout en un" en bash a été créé afin de faciliter cette étape sur un serveur doté d’une distribution Linux compatible.
Vous devez bénéficier d’un accès SSH à votre serveur et d’un compte "root" afin de l’utiliser, ce qui permettra d’installer les dépendances. Contactez votre hébergeur si vous ne disposez pas de cela.
La documentation de l’utilisation du script d’installation (...)
Ajouter des informations spécifiques aux utilisateurs et autres modifications de comportement liées aux auteurs

12 avril 2011, par kent1

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.
Que fait exactement ce script ?

18 janvier 2011, par kent1

Ce script est écrit en bash. Il est donc facilement utilisable sur n’importe quel serveur.
Il n’est compatible qu’avec une liste de distributions précises (voir Liste des distributions compatibles).
Installation de dépendances de MediaSPIP
Son rôle principal est d’installer l’ensemble des dépendances logicielles nécessaires coté serveur à savoir :
Les outils de base pour pouvoir installer le reste des dépendances Les outils de développements : build-essential (via APT depuis les dépôts officiels) ; (...)

1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | ... | 38

Sur d’autres sites (10598)

Merge commit ’cd8f772d0678a90957f4dfd5ce51af9d22e3f212’

4 novembre 2013, par Michael Niedermayer

Merge commit ’cd8f772d0678a90957f4dfd5ce51af9d22e3f212’

* commit ’cd8f772d0678a90957f4dfd5ce51af9d22e3f212’ :
lavc : Add colorimetry values for BT.2020, other non-included ones

Conflicts :
doc/APIchanges
libavcodec/avcodec.h
libavcodec/version.h

Merged-by : Michael Niedermayer <michaelni@gmx.at>

[D H] doc/APIchanges
[D H] libavcodec/avcodec.h
[D H] libavcodec/version.h
[D H] libavutil/frame.h
[D H] libavutil/version.h

How to get rtp(javacv ffmpeg) stream from VLC as client

15 avril 2015, par Sezertt

I am trying to play rtp stream from vlc player which I created using javacv. Here is the code :

        FFmpegFrameGrabber frameGrabber = new FFmpegFrameGrabber("rtsp://10.6.0.147:554/ufirststream");

        frameGrabber.start();  // First I take another stream 



        FFmpegFrameRecorder frameRecorder = new FFmpegFrameRecorder("rtp://239.31.31.69:4433", frameGrabber.getImageWidth(), frameGrabber.getImageHeight());



        frameRecorder.setFormat("rtp");

        frameRecorder.setPixelFormat(AV_PIX_FMT_YUV420P);

        frameRecorder.setVideoCodec(AV_CODEC_ID_MPEG2VIDEO); &lt;-- AV_CODEC_ID_H264

        frameRecorder.setFrameRate(25);           

        frameRecorder.setVideoBitrate(1024); &lt;--1024*1024*2            

        frameRecorder.start();

        while (true) {

            frameRecorder.record(frameGrabber.grab()); //grab from stream, stream with rtp

        }

If I choose my codec as AV_CODEC_ID_MPEG2VIDEO I can play the stream from VLC using rtp ://239.31.31.69:4433 with open network.

If I increase the quality using setVideoBitrate(1024*1024*2) the stream lags too much and if I decrease the quality is so bad.

I want to use AV_CODEC_ID_H264 as my codec to fasten things with better quality but i can’t play the stream from VLC getting error :

SDP required A description in SDP format is required to receive the RTP stream. Note that rtp :// URIs cannot work with dynamic RTP payload format (96).

I tried to get sdp using wireshark and then I realized rtp stream doesn’t have sdp :) so I tried to create my own sdp like this

c=IN IP4 239.31.31.69

m=video 4433 RTP/AVP 96

a=rtpmap:96 H264/90000

and this

v=0

c=IN IP4 239.31.31.69

a=recvonly

t=0 0

m=video 4433 RTP/AVP 99

a=rtpmap:99 H264/90000

a=fmtp:99 packetization-mode=1;profile-level-id=42c01e;sprop-parameter sets=Z0LAHukBQHsg,aM4G4g==;

but both seems to fail similar to this

> core debug: adding item `asf.sdp' ( file:///C:/Users/Sezer/Desktop/asf.sdp )

core debug: processing request item: asf.sdp, node: null, skip: 0

core debug: rebuilding array of current - root Playlist

core debug: rebuild done - 7 items, index 6

core debug: starting playback of the new playlist item

core debug: resyncing on asf.sdp

core debug: asf.sdp is at 6

core debug: creating new input thread

core debug: Creating an input for 'asf.sdp'

core debug: Creating an input for 'asf.sdp'

core debug: requesting art for asf.sdp

core debug: using timeshift granularity of 50 MiB, in path 'C:\Users\Sezer\AppData\Local\Temp'

core debug: `file:///C:/Users/Sezer/Desktop/asf.sdp' gives access `file' demux `' path `/C:/Users/Sezer/Desktop/asf.sdp'

core debug: specified demux `any'

core debug: creating demux: access='file' demux='any' location='/C:/Users/Sezer/Desktop/asf.sdp' file='C:\Users\Sezer\Desktop\asf.sdp'

core debug: looking for access_demux module matching "file": 12 candidates

core debug: looking for meta fetcher module matching "any": 1 candidates

core debug: no access_demux modules matched

core debug: creating access 'file' location='/C:/Users/Sezer/Desktop/asf.sdp', path='C:\Users\Sezer\Desktop\asf.sdp'

core debug: looking for access module matching "file": 21 candidates

filesystem debug: opening file `C:\Users\Sezer\Desktop\asf.sdp'

lua debug: Trying Lua scripts in C:\Users\Sezer\AppData\Roaming\vlc\lua\meta\fetcher

core debug: using access module "filesystem"

core debug: Using stream method for AStream*

lua debug: Trying Lua scripts in C:\Program Files (x86)\VideoLAN\VLC\lua\meta\fetcher

core debug: starting pre-buffering

core debug: received first data after 0 ms

core debug: pre-buffering done 193 bytes in 0s - 188476 KiB/s

core debug: looking for stream_filter module matching "any": 6 candidates

core debug: no stream_filter modules matched

lua debug: Trying Lua playlist script C:\Program Files (x86)\VideoLAN\VLC\lua\meta\fetcher\tvrage.luac

core debug: looking for stream_filter module matching "record": 6 candidates

core debug: using stream_filter module "record"

core debug: creating demux: access='file' demux='any' location='/C:/Users/Sezer/Desktop/asf.sdp' file='C:\Users\Sezer\Desktop\asf.sdp'

core debug: looking for demux module matching "any": 65 candidates

live555 debug: version 2014.07.25

live555 debug: RTP subsession 'video/H264'

core debug: selecting program id=0

core debug: adding item `file.sdp' ( file:///C:/Users/Sezer/Desktop/file.sdp )

live555 debug: setup start: 0.000000 stop:0.000000

live555 debug: play start: 0.000000 stop:0.000000

core debug: using demux module "live555"

lua debug: skipping script (unmatched scope) C:\Program Files (x86)\VideoLAN\VLC\lua\meta\fetcher\tvrage.luac

core debug: no meta fetcher modules matched

core debug: looking for a subtitle file in C:\Users\Sezer\Desktop\

core debug: searching art for asf.sdp

core debug: looking for art finder module matching "any": 2 candidates

core debug: looking for decoder module matching "any": 43 candidates

avcodec debug: CPU flags: 0x010053db

lua debug: Trying Lua scripts in C:\Users\Sezer\AppData\Roaming\vlc\lua\meta\art

lua debug: Trying Lua scripts in C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art

avcodec debug: trying to use direct rendering

avcodec debug: allowing 4 thread(s) for decoding

avcodec warning: threaded frame decoding is not compatible with DXVA2, disabled

lua debug: Trying Lua playlist script C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\00_musicbrainz.luac

core debug: meta ok for (null), need to fetch art

core debug: Creating an input for 'file.sdp'

avcodec debug: avcodec codec (H264 - MPEG-4 AVC (part 10)) started

avcodec debug: using slice thread mode with 4 threads

core debug: using decoder module "avcodec"

core debug: looking for meta fetcher module matching "any": 1 candidates

core debug: looking for packetizer module matching "any": 23 candidates

core debug: using packetizer module "packetizer_h264"

lua debug: skipping script (unmatched scope) C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\00_musicbrainz.luac

lua debug: Trying Lua playlist script C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\01_googleimage.luac

lua debug: Trying Lua scripts in C:\Users\Sezer\AppData\Roaming\vlc\lua\meta\fetcher

lua debug: Trying Lua scripts in C:\Program Files (x86)\VideoLAN\VLC\lua\meta\fetcher

core debug: looking for meta reader module matching "any": 2 candidates

lua debug: Trying Lua playlist script C:\Program Files (x86)\VideoLAN\VLC\lua\meta\fetcher\tvrage.luac

lua debug: Trying Lua scripts in C:\Users\Sezer\AppData\Roaming\vlc\lua\meta\reader

lua debug: Trying Lua scripts in C:\Program Files (x86)\VideoLAN\VLC\lua\meta\reader

lua debug: skipping script (unmatched scope) C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\01_googleimage.luac

lua debug: Trying Lua playlist script C:\Program Files (x86)\VideoLAN\VLC\lua\meta\reader\filename.luac

lua debug: Trying Lua playlist script C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\02_frenchtv.luac

lua debug: skipping script (unmatched scope) C:\Program Files (x86)\VideoLAN\VLC\lua\meta\fetcher\tvrage.luac

core debug: no meta fetcher modules matched

core debug: searching art for asf.sdp

core debug: looking for art finder module matching "any": 2 candidates

core debug: no meta reader modules matched

lua debug: skipping script (unmatched scope) C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\02_frenchtv.luac

core debug: `file:///C:/Users/Sezer/Desktop/asf.sdp' successfully opened

lua debug: Trying Lua playlist script C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\03_lastfm.luac

lua debug: Trying Lua scripts in C:\Users\Sezer\AppData\Roaming\vlc\lua\meta\art

core debug: meta ok for (null), need to fetch art

lua debug: Trying Lua scripts in C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art

lua debug: Trying Lua playlist script C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\00_musicbrainz.luac

lua debug: skipping script (unmatched scope) C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\03_lastfm.luac

core debug: no art finder modules matched

lua debug: skipping script (unmatched scope) C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\00_musicbrainz.luac

core debug: looking for meta fetcher module matching "any": 1 candidates

lua debug: Trying Lua playlist script C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\01_googleimage.luac

lua debug: Trying Lua scripts in C:\Users\Sezer\AppData\Roaming\vlc\lua\meta\fetcher

lua debug: Trying Lua scripts in C:\Program Files (x86)\VideoLAN\VLC\lua\meta\fetcher

lua debug: Trying Lua playlist script C:\Program Files (x86)\VideoLAN\VLC\lua\meta\fetcher\tvrage.luac

lua debug: skipping script (unmatched scope) C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\01_googleimage.luac

lua debug: Trying Lua playlist script C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\02_frenchtv.luac

lua debug: skipping script (unmatched scope) C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\02_frenchtv.luac

lua debug: Trying Lua playlist script C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\03_lastfm.luac

core debug: using meta fetcher module "lua"

core debug: removing module "lua"

core debug: searching art for asf.sdp

core debug: looking for art finder module matching "any": 2 candidates

lua debug: skipping script (unmatched scope) C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\03_lastfm.luac

qt4 debug: IM: Setting an input

core debug: no art finder modules matched

core debug: looking for meta fetcher module matching "any": 1 candidates

lua debug: Trying Lua scripts in C:\Users\Sezer\AppData\Roaming\vlc\lua\meta\art

lua debug: Trying Lua scripts in C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art

lua debug: Trying Lua scripts in C:\Users\Sezer\AppData\Roaming\vlc\lua\meta\fetcher

lua debug: Trying Lua playlist script C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\00_musicbrainz.luac

lua debug: Trying Lua scripts in C:\Program Files (x86)\VideoLAN\VLC\lua\meta\fetcher

lua debug: Trying Lua playlist script C:\Program Files (x86)\VideoLAN\VLC\lua\meta\fetcher\tvrage.luac

lua debug: Trying Lua playlist script C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\01_googleimage.luac

lua debug: skipping script (unmatched scope) C:\Program Files (x86)\VideoLAN\VLC\lua\meta\fetcher\tvrage.luac

core debug: no meta fetcher modules matched

core debug: searching art for file.sdp

core debug: looking for art finder module matching "any": 2 candidates

lua debug: Trying Lua playlist script C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\02_frenchtv.luac

lua debug: Trying Lua scripts in C:\Users\Sezer\AppData\Roaming\vlc\lua\meta\art

lua debug: Trying Lua scripts in C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art

lua debug: Trying Lua playlist script C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\00_musicbrainz.luac

lua debug: Trying Lua playlist script C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\03_lastfm.luac

lua debug: skipping script (unmatched scope) C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\00_musicbrainz.luac

lua debug: Trying Lua playlist script C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\01_googleimage.luac

core debug: no art finder modules matched

core debug: art not found for asf.sdp

lua debug: skipping script (unmatched scope) C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\01_googleimage.luac

lua debug: Trying Lua playlist script C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\02_frenchtv.luac

lua debug: skipping script (unmatched scope) C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\02_frenchtv.luac

lua debug: Trying Lua playlist script C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\03_lastfm.luac

lua debug: skipping script (unmatched scope) C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\03_lastfm.luac

core debug: no art finder modules matched

core debug: looking for meta fetcher module matching "any": 1 candidates

lua debug: Trying Lua scripts in C:\Users\Sezer\AppData\Roaming\vlc\lua\meta\fetcher

lua debug: Trying Lua scripts in C:\Program Files (x86)\VideoLAN\VLC\lua\meta\fetcher

lua debug: Trying Lua playlist script C:\Program Files (x86)\VideoLAN\VLC\lua\meta\fetcher\tvrage.luac

core debug: using meta fetcher module "lua"

core debug: removing module "lua"

core debug: searching art for asf.sdp

core debug: looking for art finder module matching "any": 2 candidates

lua debug: Trying Lua scripts in C:\Users\Sezer\AppData\Roaming\vlc\lua\meta\art

lua debug: Trying Lua scripts in C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art

lua debug: Trying Lua playlist script C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\00_musicbrainz.luac

lua debug: Trying Lua playlist script C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\01_googleimage.luac

lua debug: Trying Lua playlist script C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\02_frenchtv.luac

lua debug: Trying Lua playlist script C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\03_lastfm.luac

core debug: no art finder modules matched

core debug: art not found for asf.sdp

core debug: looking for meta fetcher module matching "any": 1 candidates

lua debug: Trying Lua scripts in C:\Users\Sezer\AppData\Roaming\vlc\lua\meta\fetcher

lua debug: Trying Lua scripts in C:\Program Files (x86)\VideoLAN\VLC\lua\meta\fetcher

lua debug: Trying Lua playlist script C:\Program Files (x86)\VideoLAN\VLC\lua\meta\fetcher\tvrage.luac

core debug: using meta fetcher module "lua"

core debug: removing module "lua"

core debug: searching art for file.sdp

core debug: looking for art finder module matching "any": 2 candidates

lua debug: Trying Lua scripts in C:\Users\Sezer\AppData\Roaming\vlc\lua\meta\art

lua debug: Trying Lua scripts in C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art

lua debug: Trying Lua playlist script C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\00_musicbrainz.luac

lua debug: Trying Lua playlist script C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\01_googleimage.luac

lua debug: Trying Lua playlist script C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\02_frenchtv.luac

lua debug: Trying Lua playlist script C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\03_lastfm.luac

core debug: no art finder modules matched

core debug: art not found for file.sdp

Can you lead me to the right direction ? What should I do to get fair quality and no lag using rtp ?

FFmpegFrameGrabber video artefacts from RTSP network camera

2 février 2015, par UncleChris

I’m using JavaCV FFmpegFrameGrabber to grab frames from my network camera through RTSP protocol. Simplified code looks like this :

/* from ini method */

// url like: rtsp://ip:port/stream1

grabber = new FFmpegFrameGrabber(stream.getUrl());

// type: RTP

grabber.setFormat(stream.getMediaType());

grabber.start();



/* it's called in while loop from outside */

public void grab() throws FrameProcessorsException {



    try {

        LOGGER.info(grabber.getFrameNumber());

        frame = grabber.grab();

    } catch (FrameGrabber.Exception e) {

        throw new FrameProcessorsException(e);

    }



    // I save my frames to other grabber, to make mp4 file to watch it later

    try {

        videoRecorder.recordFrame(frame, grabber.getTimestamp(), grabber.getImageWidth(), grabber.getImageHeight(), grabber.getAudioChannels());

    } catch (FrameRecorder.Exception e) {

        throw new FrameProcessorsException(e);

    }



    // my processing, the troublemaker

    long currentFrameNum = grabber.getFrameNumber();

    if (processing &amp;&amp; currentFrameNum - lastFrameWithAnalysis >= PROCESS_FREQUENCY) {



        lastFrameWithAnalysis = currentFrameNum;



        Mat frameMat = new Mat(frame, false);

        try {

            LOGGER.info("Processing :" + grabber.getFrameNumber());

            AnalysisResult result = frameAnalyzer.processFrame(frameMat, (int) currentFrameNum);

            videoAnalysisSaver.saveFrameAnalysisResult(frameMat, result, (int) currentFrameNum);

        } catch (ServerErrorException | NotExistException e) {

            LOGGER.warn(e);

        }

In code You can see processing variable. If it’s set to false, I can watch my network streams on page with no problems. But if I set it to true, suddenly, I got visual artefacts, looking like this :

http://answers.opencv.org/upfiles/1400931120927032.png

And also I can see some infos on my logs :

[libx264 @ 0x7fe2a7e2ae00] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX

[libx264 @ 0x7fe2a7e2ae00] profile High, level 4.0

[libx264 @ 0x7fe2a7e2ae00] 264 - core 142 - H.264/MPEG-4 AVC codec - Copyleft 2003-2014 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1,00:0,00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=12 lookahead_threads=2 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=abr mbtree=1 bitrate=400 ratetol=1,0 qcomp=0,60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1,40 aq=1:1,00

[mp4 @ 0x7fe2909feee0] Using AVStream.codec.time_base as a timebase hint to the muxer is deprecated. Set AVStream.time_base instead.

2015-02-02 10:34:31,986 INFO  [img.StreamGrabber] 6

2015-02-02 10:34:31,998 INFO  [img.StreamGrabber] Processing :1

2015-02-02 10:34:32,881 INFO  [img.analysis.face.PersonFaceRecognizer] Predicted face (1524, 1564, 678, 718) is above threshold

2015-02-02 10:34:32,882 INFO  [img.analysis.face.PersonFaceRecognizer] Predicted face (1538, 1577, 678, 717) is above threshold

2015-02-02 10:34:32,884 INFO  [img.analysis.face.PersonFaceRecognizer] Predicted face (1320, 1420, 298, 398) is above threshold

2015-02-02 10:34:33,199 INFO  [img.StreamGrabber] 1

2015-02-02 10:34:33,212 INFO  [img.StreamGrabber] 2

2015-02-02 10:34:33,222 INFO  [img.StreamGrabber] 3

2015-02-02 10:34:33,232 INFO  [img.StreamGrabber] 4

2015-02-02 10:34:33,244 INFO  [img.StreamGrabber] 5

2015-02-02 10:34:33,255 INFO  [img.StreamGrabber] Processing :6

2015-02-02 10:34:33,870 INFO  [img.analysis.face.PersonFaceRecognizer] Predicted face (1537, 1578, 678, 719) is above threshold

2015-02-02 10:34:33,871 INFO  [img.analysis.face.PersonFaceRecognizer] Predicted face (1315, 1422, 298, 405) is above threshold

2015-02-02 10:34:34,318 INFO  [img.StreamGrabber] 6

2015-02-02 10:34:34,338 INFO  [img.StreamGrabber] 7

2015-02-02 10:34:34,347 INFO  [img.StreamGrabber] 8

2015-02-02 10:34:34,357 INFO  [img.StreamGrabber] 9

2015-02-02 10:34:34,368 INFO  [img.StreamGrabber] 10

2015-02-02 10:34:34,379 INFO  [img.StreamGrabber] Processing :11

2015-02-02 10:34:35,025 INFO  [img.analysis.face.PersonFaceRecognizer] Predicted face (1561, 1618, 477, 534) is above threshold

2015-02-02 10:34:35,027 INFO  [img.analysis.face.PersonFaceRecognizer] Predicted face (1318, 1421, 300, 403) is above threshold

2015-02-02 10:34:35,185 INFO  [img.StreamGrabber] 11

2015-02-02 10:34:35,202 INFO  [img.StreamGrabber] 12

2015-02-02 10:34:35,213 INFO  [img.StreamGrabber] 13

2015-02-02 10:34:35,223 INFO  [img.StreamGrabber] 14

2015-02-02 10:34:35,235 INFO  [img.StreamGrabber] 15

2015-02-02 10:34:35,286 INFO  [img.StreamGrabber] Processing :16

2015-02-02 10:34:35,952 INFO  [img.analysis.face.PersonFaceRecognizer] Predicted face (1429, 1470, 703, 744) is above threshold

2015-02-02 10:34:35,954 INFO  [img.analysis.face.PersonFaceRecognizer] Predicted face (1315, 1422, 295, 402) is above threshold

2015-02-02 10:34:36,218 INFO  [img.StreamGrabber] 16

2015-02-02 10:34:36,237 INFO  [img.StreamGrabber] 17

2015-02-02 10:34:36,246 INFO  [img.StreamGrabber] 18

2015-02-02 10:34:36,257 INFO  [img.StreamGrabber] 19

2015-02-02 10:34:36,268 INFO  [img.StreamGrabber] 20

2015-02-02 10:34:36,279 INFO  [img.StreamGrabber] Processing :21

2015-02-02 10:34:36,967 INFO  [img.analysis.face.PersonFaceRecognizer] Predicted face (1562, 1616, 480, 534) is above threshold

2015-02-02 10:34:36,968 INFO  [img.analysis.face.PersonFaceRecognizer] Predicted face (1314, 1420, 296, 402) is above threshold

2015-02-02 10:34:37,186 INFO  [img.StreamGrabber] 21

2015-02-02 10:34:37,206 INFO  [img.StreamGrabber] 22

2015-02-02 10:34:37,217 INFO  [img.StreamGrabber] 23

2015-02-02 10:34:37,227 INFO  [img.StreamGrabber] 24

[h264 @ 0x7fe2915b30a0] RTP: missed 1514 packets

[h264 @ 0x7fe2f1050ea0] Cannot use next picture in error concealment

[h264 @ 0x7fe2f1050ea0] concealing 4608 DC, 4608 AC, 4608 MV errors in P frame

2015-02-02 10:34:37,238 INFO  [img.StreamGrabber] 25

2015-02-02 10:34:37,250 INFO  [img.StreamGrabber] Processing :26

2015-02-02 10:34:37,944 INFO  [img.analysis.face.PersonFaceRecognizer] Predicted face (1562, 1616, 479, 533) is above threshold

2015-02-02 10:34:37,945 INFO  [img.analysis.face.PersonFaceRecognizer] Predicted face (1315, 1422, 297, 404) is above threshold

2015-02-02 10:34:38,107 INFO  [img.StreamGrabber] 26

[h264 @ 0x7fe2915b30a0] RTP: missed 295 packets

[h264 @ 0x7fe2a5713e00] Cannot use next picture in error concealment

[h264 @ 0x7fe2a5713e00] concealing 1996 DC, 1996 AC, 1996 MV errors in P frame

2015-02-02 10:34:38,120 INFO  [img.StreamGrabber] 27

2015-02-02 10:34:38,130 INFO  [img.StreamGrabber] 28

2015-02-02 10:34:38,143 INFO  [img.StreamGrabber] 29

2015-02-02 10:34:38,231 INFO  [img.StreamGrabber] 30

2015-02-02 10:34:38,249 INFO  [img.StreamGrabber] Processing :31

2015-02-02 10:34:38,962 INFO  [img.analysis.face.PersonFaceRecognizer] Predicted face (1170, 1211, 322, 363) is above threshold

2015-02-02 10:34:38,964 INFO  [img.analysis.face.PersonFaceRecognizer] Predicted face (1316, 1421, 298, 403) is above threshold

2015-02-02 10:34:39,329 INFO  [img.StreamGrabber] 31

[h264 @ 0x7fe2915b30a0] RTP: missed 232 packets

[h264 @ 0x7fe2a4203d80] Cannot use next picture in error concealment

[h264 @ 0x7fe2a4203d80] concealing 1142 DC, 1142 AC, 1142 MV errors in P frame

2015-02-02 10:34:39,342 INFO  [img.StreamGrabber] 32

2015-02-02 10:34:39,352 INFO  [img.StreamGrabber] 33

[h264 @ 0x7fe2915b30a0] RTP: missed 1 packets

[h264 @ 0x7fe2915b43c0] corrupted macroblock 86 67 (total_coeff=-1)

[h264 @ 0x7fe2915b43c0] error while decoding MB 86 67

[h264 @ 0x7fe2915b43c0] Cannot use next picture in error concealment

[h264 @ 0x7fe2915b43c0] concealing 83 DC, 83 AC, 83 MV errors in P frame

2015-02-02 10:34:39,362 INFO  [img.StreamGrabber] Processing :144

2015-02-02 10:34:40,071 INFO  [img.analysis.face.PersonFaceRecognizer] Predicted face (1563, 1614, 480, 531) is above threshold

2015-02-02 10:34:40,074 INFO  [img.analysis.face.PersonFaceRecognizer] Predicted face (1318, 1423, 296, 401) is above threshold

2015-02-02 10:34:40,462 INFO  [img.StreamGrabber] 144

2015-02-02 10:34:40,482 INFO  [img.StreamGrabber] 145

[h264 @ 0x7fe2915b30a0] RTP: missed 377 packets

[h264 @ 0x7fe2a515baa0] Cannot use next picture in error concealment

[h264 @ 0x7fe2a515baa0] concealing 6822 DC, 6822 AC, 6822 MV errors in P frame

2015-02-02 10:34:40,494 INFO  [img.StreamGrabber] Processing :167

2015-02-02 10:34:41,222 INFO  [img.analysis.face.PersonFaceRecognizer] Predicted face (1563, 1615, 479, 531) is above threshold

2015-02-02 10:34:41,230 INFO  [img.analysis.face.PersonFaceRecognizer] Predicted face (1319, 1421, 295, 397) is above threshold

2015-02-02 10:34:41,930 INFO  [img.StreamGrabber] 167

2015-02-02 10:34:41,947 INFO  [img.StreamGrabber] 168

2015-02-02 10:34:41,958 INFO  [img.StreamGrabber] 169

2015-02-02 10:34:41,970 INFO  [img.StreamGrabber] 170

2015-02-02 10:34:41,985 INFO  [img.StreamGrabber] 171

[h264 @ 0x7fe2915b30a0] RTP: missed 311 packets

[h264 @ 0x7fe2f10506c0] Cannot use next picture in error concealment

[h264 @ 0x7fe2f10506c0] concealing 1409 DC, 1409 AC, 1409 MV errors in P frame

2015-02-02 10:34:41,997 INFO  [img.StreamGrabber] Processing :190

2015-02-02 10:34:42,715 INFO  [img.analysis.face.PersonFaceRecognizer] Predicted face (1322, 1384, 340, 402) is above threshold

2015-02-02 10:34:42,717 INFO  [img.analysis.face.PersonFaceRecognizer] Predicted face (1312, 1425, 290, 403) is above threshold

2015-02-02 10:34:42,929 INFO  [img.StreamGrabber] 190

[h264 @ 0x7fe2915b30a0] RTP: missed 13 packets

[h264 @ 0x7fe2f1050ea0] Cannot use next picture in error concealment

[h264 @ 0x7fe2f1050ea0] concealing 6489 DC, 6489 AC, 6489 MV errors in P frame

2015-02-02 10:34:42,943 INFO  [img.StreamGrabber] 191

[h264 @ 0x7fe2915b30a0] RTP: missed 484 packets

[h264 @ 0x7fe2915b43c0] concealing 6609 DC, 6609 AC, 6609 MV errors in I frame

2015-02-02 10:34:42,957 INFO  [img.StreamGrabber] 192

2015-02-02 10:34:42,970 INFO  [img.StreamGrabber] 193

[h264 @ 0x7fe2915b30a0] RTP: missed 313 packets

[h264 @ 0x7fe2a51a0fc0] Cannot use next picture in error concealment

[h264 @ 0x7fe2a51a0fc0] concealing 1666 DC, 1666 AC, 1666 MV errors in P frame

2015-02-02 10:34:43,271 INFO  [img.StreamGrabber] 194

2015-02-02 10:34:43,314 INFO  [img.StreamGrabber] Processing :249

2015-02-02 10:34:44,099 INFO  [img.analysis.face.PersonFaceRecognizer] Predicted face (1322, 1384, 340, 402) is above threshold

2015-02-02 10:34:44,100 INFO  [img.analysis.face.PersonFaceRecognizer] Predicted face (1313, 1403, 300, 390) is above threshold

2015-02-02 10:34:45,473 INFO  [img.save.event.EventMaker] Creating 1 face recognition events

2015-02-02 10:34:45,618 INFO  [core.task.StreamRecordingTaskExecutor] Stream recording task ended: rtsp://MYURL

My guess is, that my computer is simply too busy to catch all packages from camera stream. I’m operating on two streams, one is low quality with like 3 fps, and other is 30. Of course problems show up all the time on fast one, and rarely on slow stream.
I’m wondering if there is possibility to force somehow FFmpegFrameGraber not to create artifacts, but simply drop current frame and go to next one ? Fps and frame continuity is not so important. I was trying to use grabber’s setfps, settimestamp, delayedGrab method’s to somehow slow down 30-fps stream, but it didn’t even react to that. I’m sure I’m doing something wrong.

I’ve found some topics related to my problem, but they did not helped me, maybe You will see more :
http://answers.opencv.org/question/34012/ip-camera-h264-error-while-decoding/
How to deal with cv::VideoCapture decode errors ?
http://superuser.com/questions/663928/ffmpeg-to-capture-stills-from-h-264-stream

Thank You for Your help.

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