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Sur d’autres sites (11013)

  • How can I recieve an RTP stream with JavaCV ?

    11 janvier 2019, par c.berger

    I’m trying to stream video from an RTP server (currently VLC for testing) and decode it in Java. To do this, I’m using JavaCV to decode the incoming stream. Here’s what I have so far :

    try {
    
    grabber = new FFmpegFrameGrabber("rtp://localhost:5004/test");
    
    grabber.setFormat("h264");
    
    grabber.setFrameRate(30.0);
    
    grabber.start();
    
    Java2DFrameConverter converter = new Java2DFrameConverter();
    
    while (true) {
    
        Frame frame = grabber.grab();
    
        imageToDraw = frame != null ? converter.convert(frame) : null;
    
        // goes off to paint a widget on a window, see https://git.io/fhZSr for more context
    
        repaint();
    
    }
    
} catch (Exception e) {
    
    // TODO: Discover what circumstances cause this
    
    e.printStackTrace(System.out);
    
}

    On VLC, my stream settings are set like this :

    • Destination stream : RTP/TS (address localhost, port 5004, and stream name test.)
    • Transcoding active, set to "Video - H.264 + MP3 (TS)" preset :
      • MPEG-TS encapsulation
      • h.264 video with MPEG audio
    • Stream all elementary streams is off.

    I can get one VLC instance to stream to another with these settings (with the "client" VLC receiving from rtp://localhost:5004/test), and it works just fine. (The only issues arise from having a weak test machine not suited transcoding high res video.)

    Switch over to Java, and all I can see is gray frames with a spat of color here and there. The console is also screaming the whole way through. Some snippets (the full log is too long to be a reasonable post, but it can be found here if you really want it) :

    [h264 @ 0x7f6c4c3502c0] cabac decode of qscale diff failed at 8 12
    
[h264 @ 0x7f6c4c3502c0] error while decoding MB 8 12, bytestream 670
    
[h264 @ 0x7f6c4c3502c0] concealing 421 DC, 421 AC, 421 MV errors in P frame
    [h264 @ 0x7f6c4c3502c0] Reference 4 >= 2
    
[h264 @ 0x7f6c4c3502c0] error while decoding MB 25 8, bytestream 416
    
[h264 @ 0x7f6c4c3502c0] concealing 556 DC, 556 AC, 556 MV errors in B frame
    [h264 @ 0x7f6c4c3502c0] Reference 5 >= 4
    
[h264 @ 0x7f6c4c3502c0] error while decoding MB 21 1, bytestream 6042
    
[h264 @ 0x7f6c4c3502c0] concealing 826 DC, 826 AC, 826 MV errors in P frame
    
[h264 @ 0x7f6c4c3502c0] Invalid NAL unit 8, skipping.
    
[above line repeats 5x]
    
[h264 @ 0x7f6c4c3502c0] top block unavailable for requested intra mode
    
[h264 @ 0x7f6c4c3502c0] error while decoding MB 3 0, bytestream 730
    
[h264 @ 0x7f6c4c3502c0] concealing 836 DC, 836 AC, 836 MV errors in P frame

    Is there something I am clearly doing wrong ?

  • Long-running AWS Linux process suddenly freezes once in a while

    12 décembre 2022, par Incredi Blame

    I am running a non-stop process on Ubuntu LTS AWS t2.micro instance. Process is ffmpeg downloading network stream from a CCTV. It crashes every 10 min cause of network errors, so I run it in a cycle script like this :

    


    while true
do
    ~command~
done


    


    The cycler-script itself never crashes.

    


    Everything works fine for hours (I check with ssh from time to time). But then sometimes ffmpeg process just freezes. I checked logs, it is writing the stream and it literally freezes mid-way through the stream, no error messages, nothing, as if it is still waiting for the next packet. Just stops working and never wakes up. Usually if the stream goes down ffmpeg complains, spits errors out and crashes. But on this occasion there is nothing and no crash either.

    


    Another mystery is that I run several of such ffmpeg processes and they all freeze at the same time.

    


    The issue with that freezing is the cycler can't restart ffmpegs, as they haven't crashed. When I check frozen processes with ps -aux they are shown as SL, which doesn't tell much, as they are always marked this way. top -i doesn't display them at all as active. When they work as normal it does. If I kill those frozen processes the cycler restarts them and everything works again as it should.

    


    I can always kill those ffmpegs once in a while on some schedule and let cycler restart them. Or check if they froze by timestamps they output and kill them then, so theoretically the problem is solvable. But I just want to know what causes it.

    


    I haven't figured out yet if this freezing happens at the same time of the day, trying to track that now. I don't think it could be related to free space shortage, as I have a cleaner cron job and free space is always available.

    


    So I have the following questions :

    


      

    1. Is there anything on AWS itself which could cause this freezing ? Like some kind of regular maintenance job that messes with running processes ?

      2. 


    2. Could it be caused by Linux freezing long-running processes ? Probably not, as they all freeze at the same time while current running time is different for each.

      3. 


    3. Last one, my cron job that cleans space also cleans out logs that ffmpeg is appending to. The script goes like this :

      4. 


    


    tail "ffmpeg.log" -n 10000 > "tmp.log" && \
    cat "tmp.log" > "ffmpeg.log" && \
    rm "tmp.log"


    


    The logs now are already full and are never fully cleared. Cron job just preserves the last 10000 lines. It runs every 2 min and runs fine for hours. Could it be responsible for this sudden freezing due to some coincidental timing ?

    


    If none of the above is responsible for freezing it must be some streaming issue on the server side, which I have no access to. In that case I would have to rely on detecting freezing and restarting ffmpegs.

    


  • Libsourcey : webrtcrecorder.mp4 file is not generated

    5 décembre 2018, par Iranna Pattar

    I am running WebRTC Native Video Recorder demo Application, but webrtcrecorder.mp4 file is not generated. As I have gone through some question and answers but unable to find the answer. I am getting some error

    here is the command of cmake

    cmake .. -DCMAKE_BUILD_TYPE=DEBUG -DBUILD_SHARED_LIBS=OFF     -DBUILD_MODULES=OFF    -DBUILD_APPLICATIONS=OFF \
    
   -DBUILD_SAMPLES=ON         -DBUILD_TESTS=OFF         -DWITH_WEBRTC=ON -DWITH_FFMPEG=ON    -DBUILD_MODULE_base=ON \
    
   -DBUILD_MODULE_crypto=ON   -DBUILD_MODULE_http=ON       -DBUILD_MODULE_json=ON               -DBUILD_MODULE_av=ON    \
    
   -DBUILD_MODULE_net=ON      -DBUILD_MODULE_socketio=ON   -DBUILD_MODULE_symple=ON             -DBUILD_MODULE_stun=ON   \
    
   -DBUILD_MODULE_turn=ON     -DBUILD_MODULE_util=ON       -DBUILD_MODULE_uv=ON                 -DBUILD_MODULE_webrtc=ON \
    
   -DBUILD_SAMPLES_webrtc=ON  -DWEBRTC_INCLUDE_DIR=/home/ubuntu/temp/webrtc-22215-ab42706-linux-x64/include \
    
   -DWEBRTC_LIBRARIES=/home/ubuntu/temp/webrtc-22215-ab42706-linux-x64/lib/ \
    
   -DWEBRTC_ROOT_DIR=/home/ubuntu/temp/webrtc-22215-ab42706-linux-x64    \
    
   -DBUILD_MODULE_openssl=ON   -DOPENSSL_ROOT_DIR=/usr/local/ssl     -DOPENSSL_LIBRARIES=/usr/local/ssl/lib/ \
    
   -DOPENSSL_INCLUDE_DIR=/usr/local/ssl/include/openssl/

    here are the logs of webrtcrecorder :

    Client state changed from Closed to Connecting
    
13:31:54 [debug] [application.cpp(104)] Wait for shutdown
    
13:31:54 [debug] [signaler.cpp(116)] Client state changed from Connecting to Connected
    
13:31:54 [debug] [client.cpp(364)] On handshake: sid=_Wi06W8eF4GdOGn_AAAA, pingInterval=25000, pingTimeout=60000
    
13:31:54 [debug] [client.cpp(387)] Peer connected:videorecorder|_Wi06W8eF4GdOGn_AAAA
    
13:31:54 [debug] [signaler.cpp(116)] Client state changed from Connected to Online
    
13:31:59 [debug] [signaler.cpp(89)] Peer message: demo|Ivv61MFbOi96l__ZAAAB
    
13:31:59 [debug] [signaler.cpp(71)] Peer connected: Ivv61MFbOi96l__ZAAAB
    
13:31:59 [debug] [client.cpp(387)] Peer connected:demo|Ivv61MFbOi96l__ZAAAB
    
13:32:00 [debug] [signaler.cpp(89)] Peer message: demo|Ivv61MFbOi96l__ZAAAB
    
13:32:00 [debug] [peer.cpp(130)] Ivv61MFbOi96l__ZAAAB: Receive offer: v=0
    
o=- 7392103695987858658 2 IN IP4 127.0.0.1
    
s=-
    
t=0 0
    
a=group:BUNDLE audio video
    
a=msid-semantic: WMS je7s7e9RhWY3cMVjVn8y0ipyOgJnTgu1bMYd
    
m=audio 9 UDP/TLS/RTP/SAVPF 111 103 104 9 0 8 106 105 13 110 112 113 126
    
c=IN IP4 0.0.0.0
    
a=rtcp:9 IN IP4 0.0.0.0
    
a=ice-ufrag:ICgM
    
a=ice-pwd:hruHw+Fgaswb+slJ3/eE3Yad
    
a=ice-options:trickle
    
a=fingerprint:sha-256 B3:30:19:FA:91:57:CE:2B:7D:60:C4:16:27:FE:8E:CB:76:57:31:C6:75:72:72:87:36:C4:8E:30:91:01:27:D8
    
a=setup:actpass
    
a=mid:audio
    
a=extmap:1 urn:ietf:params:rtp-hdrext:ssrc-audio-level
    
a=sendrecv
    
a=rtcp-mux
    
a=rtpmap:111 opus/48000/2
    
a=rtcp-fb:111 transport-cc
    
a=fmtp:111 minptime=10;useinbandfec=1
    
a=rtpmap:103 ISAC/16000
    
a=rtpmap:104 ISAC/32000
    
a=rtpmap:9 G722/8000
    
a=rtpmap:0 PCMU/8000
    
a=rtpmap:8 PCMA/8000
    
a=rtpmap:106 CN/32000
    
a=rtpmap:105 CN/16000
    
a=rtpmap:13 CN/8000
    
a=rtpmap:110 telephone-event/48000
    
a=rtpmap:112 telephone-event/32000
    
a=rtpmap:113 telephone-event/16000
    
a=rtpmap:126 telephone-event/8000
    
a=ssrc:1294348972 cname:G/WgJ3Ijh9QR84NI
    
a=ssrc:1294348972 msid:je7s7e9RhWY3cMVjVn8y0ipyOgJnTgu1bMYd 30683b54-4aef-4c98-bf11-e9f497eddafd
    
a=ssrc:1294348972 mslabel:je7s7e9RhWY3cMVjVn8y0ipyOgJnTgu1bMYd
    
a=ssrc:1294348972 label:30683b54-4aef-4c98-bf11-e9f497eddafd
    
m=video 9 UDP/TLS/RTP/SAVPF 96 97 98 99 100 101 102 122 127 121 125 107 108 109 124 120 123 119 114
    
c=IN IP4 0.0.0.0
    
a=rtcp:9 IN IP4 0.0.0.0
    
a=ice-ufrag:ICgM
    
a=ice-pwd:hruHw+Fgaswb+slJ3/eE3Yad
    
a=ice-options:trickle
    
a=fingerprint:sha-256 B3:30:19:FA:91:57:CE:2B:7D:60:C4:16:27:FE:8E:CB:76:57:31:C6:75:72:72:87:36:C4:8E:30:91:01:27:D8
    
a=setup:actpass
    
a=mid:video
    
a=extmap:2 urn:ietf:params:rtp-hdrext:toffset
    
a=extmap:3 http://www.webrtc.org/experiments/rtp-hdrext/abs-send-time
    
a=extmap:4 urn:3gpp:video-orientation
    
a=extmap:5 http://www.ietf.org/id/draft-holmer-rmcat-transport-wide-cc-extensions-01
    
a=extmap:6 http://www.webrtc.org/experiments/rtp-hdrext/playout-delay
    
a=extmap:7 http://www.webrtc.org/experiments/rtp-hdrext/video-content-type
    
a=extmap:8 http://www.webrtc.org/experiments/rtp-hdrext/video-timing
    
a=sendrecv
    
a=rtcp-mux
    
a=rtcp-rsize
    
a=rtpmap:96 VP8/90000
    
a=rtcp-fb:96 goog-remb
    
a=rtcp-fb:96 transport-cc
    
a=rtcp-fb:96 ccm fir
    
a=rtcp-fb:96 nack
    
a=rtcp-fb:96 nack pli
    
a=rtpmap:97 rtx/90000
    
a=fmtp:97 apt=96
    
a=rtpmap:98 VP9/90000
    
a=rtcp-fb:98 goog-remb
    
a=rtcp-fb:98 transport-cc
    
a=rtcp-fb:98 ccm fir
    
a=rtcp-fb:98 nack
    
a=rtcp-fb:98 nack pli
    
a=fmtp:98 x-google-profile-id=0
    
a=rtpmap:99 rtx/90000
    
a=fmtp:99 apt=98
    
a=rtpmap:100 H264/90000
    
a=rtcp-fb:100 goog-remb
    
a=rtcp-fb:100 transport-cc
    
a=rtcp-fb:100 ccm fir
    
a=rtcp-fb:100 nack
    
a=rtcp-fb:100 nack pli
    
a=fmtp:100 level-asymmetry-allowed=1;packetization-mode=1;profile-level-id=42001f
    
a=rtpmap:101 rtx/90000
    
a=fmtp:101 apt=100
    
a=rtpmap:102 H264/90000
    
a=rtcp-fb:102 goog-remb
    
a=rtcp-fb:102 transport-cc
    
a=rtcp-fb:102 ccm fir
    
a=rtcp-fb:102 nack
    
a=rtcp-fb:102 nack pli
    
a=fmtp:102 level-asymmetry-allowed=1;packetization-mode=0;profile-level-id=42001f
    
a=rtpmap:122 rtx/90000
    
a=fmtp:122 apt=102
    
a=rtpmap:127 H264/90000
    
a=rtcp-fb:127 goog-remb
    
a=rtcp-fb:127 transport-cc
    
a=rtcp-fb:127 ccm fir
    
a=rtcp-fb:127 nack
    
a=rtcp-fb:127 nack pli
    
a=fmtp:127 level-asymmetry-allowed=1;packetization-mode=1;profile-level-id=42e01f
    
a=rtpmap:121 rtx/90000
    
a=fmtp:121 apt=127
    
a=rtpmap:125 H264/90000
    
a=rtcp-fb:125 goog-remb
    
a=rtcp-fb:125 transport-cc
    
a=rtcp-fb:125 ccm fir
    
a=rtcp-fb:125 nack
    
a=rtcp-fb:125 nack pli
    
a=fmtp:125 level-asymmetry-allowed=1;packetization-mode=0;profile-level-id=42e01f
    
a=rtpmap:107 rtx/90000
    
a=fmtp:107 apt=125
    
a=rtpmap:108 H264/90000
    
a=rtcp-fb:108 goog-remb
    
a=rtcp-fb:108 transport-cc
    
a=rtcp-fb:108 ccm fir
    
a=rtcp-fb:108 nack
    
a=rtcp-fb:108 nack pli
    
a=fmtp:108 level-asymmetry-allowed=1;packetization-mode=1;profile-level-id=4d0032
    
a=rtpmap:109 rtx/90000
    
a=fmtp:109 apt=108
    
a=rtpmap:124 H264/90000
    
a=rtcp-fb:124 goog-remb
    
a=rtcp-fb:124 transport-cc
    
a=rtcp-fb:124 ccm fir
    
a=rtcp-fb:124 nack
    
a=rtcp-fb:124 nack pli
    
a=fmtp:124 level-asymmetry-allowed=1;packetization-mode=1;profile-level-id=640032
    
a=rtpmap:120 rtx/90000
    
a=fmtp:120 apt=124
    
a=rtpmap:123 red/90000
    
a=rtpmap:119 rtx/90000
    
a=fmtp:119 apt=123
    
a=rtpmap:114 ulpfec/90000
    
a=ssrc-group:FID 3747062777 227800175
    
a=ssrc:3747062777 cname:G/WgJ3Ijh9QR84NI
    
a=ssrc:3747062777 msid:je7s7e9RhWY3cMVjVn8y0ipyOgJnTgu1bMYd e64ec0a4-3603-40d3-a6c6-01c5e60c79ef
    
a=ssrc:3747062777 mslabel:je7s7e9RhWY3cMVjVn8y0ipyOgJnTgu1bMYd
    
a=ssrc:3747062777 label:e64ec0a4-3603-40d3-a6c6-01c5e60c79ef
    
a=ssrc:227800175 cname:G/WgJ3Ijh9QR84NI
    
a=ssrc:227800175 msid:je7s7e9RhWY3cMVjVn8y0ipyOgJnTgu1bMYd e64ec0a4-3603-40d3-a6c6-01c5e60c79ef
    
a=ssrc:227800175 mslabel:je7s7e9RhWY3cMVjVn8y0ipyOgJnTgu1bMYd
    
a=ssrc:227800175 label:e64ec0a4-3603-40d3-a6c6-01c5e60c79ef
    

    
13:32:00 [debug] [peer.cpp(165)] Ivv61MFbOi96l__ZAAAB: On signaling state change: 3
    
13:32:00 [debug] [peer.cpp(225)] Ivv61MFbOi96l__ZAAAB: On add stream
    
13:32:00 [debug] [signaler.cpp(139)] -------onAddRemotestream---------
    
13:32:00 [debug] [peermanager.cpp(64)] Received offer: v=0
    
o=- 7392103695987858658 2 IN IP4 127.0.0.1
    
s=-
    
t=0 0
    
a=group:BUNDLE audio video
    
a=msid-semantic: WMS je7s7e9RhWY3cMVjVn8y0ipyOgJnTgu1bMYd
    
m=audio 9 UDP/TLS/RTP/SAVPF 111 103 104 9 0 8 106 105 13 110 112 113 126
    
c=IN IP4 0.0.0.0
    
a=rtcp:9 IN IP4 0.0.0.0
    
a=ice-ufrag:ICgM
    
a=ice-pwd:hruHw+Fgaswb+slJ3/eE3Yad
    
a=ice-options:trickle
    
a=fingerprint:sha-256 B3:30:19:FA:91:57:CE:2B:7D:60:C4:16:27:FE:8E:CB:76:57:31:C6:75:72:72:87:36:C4:8E:30:91:01:27:D8
    
a=setup:actpass
    
a=mid:audio
    
a=extmap:1 urn:ietf:params:rtp-hdrext:ssrc-audio-level
    
a=sendrecv
    
a=rtcp-mux
    
a=rtpmap:111 opus/48000/2
    
a=rtcp-fb:111 transport-cc
    
a=fmtp:111 minptime=10;useinbandfec=1
    
a=rtpmap:103 ISAC/16000
    
a=rtpmap:104 ISAC/32000
    
a=rtpmap:9 G722/8000
    
a=rtpmap:0 PCMU/8000
    
a=rtpmap:8 PCMA/8000
    
a=rtpmap:106 CN/32000
    
a=rtpmap:105 CN/16000
    
a=rtpmap:13 CN/8000
    
a=rtpmap:110 telephone-event/48000
    
a=rtpmap:112 telephone-event/32000
    
a=rtpmap:113 telephone-event/16000
    
a=rtpmap:126 telephone-event/8000
    
a=ssrc:1294348972 cname:G/WgJ3Ijh9QR84NI
    
a=ssrc:1294348972 msid:je7s7e9RhWY3cMVjVn8y0ipyOgJnTgu1bMYd 30683b54-4aef-4c98-bf11-e9f497eddafd
    
a=ssrc:1294348972 mslabel:je7s7e9RhWY3cMVjVn8y0ipyOgJnTgu1bMYd
    
a=ssrc:1294348972 label:30683b54-4aef-4c98-bf11-e9f497eddafd
    
m=video 9 UDP/TLS/RTP/SAVPF 96 97 98 99 100 101 102 122 127 121 125 107 108 109 124 120 123 119 114
    
c=IN IP4 0.0.0.0
    
a=rtcp:9 IN IP4 0.0.0.0
    
a=ice-ufrag:ICgM
    
a=ice-pwd:hruHw+Fgaswb+slJ3/eE3Yad
    
a=ice-options:trickle
    
a=fingerprint:sha-256 B3:30:19:FA:91:57:CE:2B:7D:60:C4:16:27:FE:8E:CB:76:57:31:C6:75:72:72:87:36:C4:8E:30:91:01:27:D8
    
a=setup:actpass
    
a=mid:video
    
a=extmap:2 urn:ietf:params:rtp-hdrext:toffset
    
a=extmap:3 http://www.webrtc.org/experiments/rtp-hdrext/abs-send-time
    
a=extmap:4 urn:3gpp:video-orientation
    
a=extmap:5 http://www.ietf.org/id/draft-holmer-rmcat-transport-wide-cc-extensions-01
    
a=extmap:6 http://www.webrtc.org/experiments/rtp-hdrext/playout-delay
    
a=extmap:7 http://www.webrtc.org/experiments/rtp-hdrext/video-content-type
    
a=extmap:8 http://www.webrtc.org/experiments/rtp-hdrext/video-timing
    
a=sendrecv
    
a=rtcp-mux
    
a=rtcp-rsize
    
a=rtpmap:96 VP8/90000
    
a=rtcp-fb:96 goog-remb
    
a=rtcp-fb:96 transport-cc
    
a=rtcp-fb:96 ccm fir
    
a=rtcp-fb:96 nack
    
a=rtcp-fb:96 nack pli
    
a=rtpmap:97 rtx/90000
    
a=fmtp:97 apt=96
    
a=rtpmap:98 VP9/90000
    
a=rtcp-fb:98 goog-remb
    
a=rtcp-fb:98 transport-cc
    
a=rtcp-fb:98 ccm fir
    
a=rtcp-fb:98 nack
    
a=rtcp-fb:98 nack pli
    
a=fmtp:98 x-google-profile-id=0
    
a=rtpmap:99 rtx/90000
    
a=fmtp:99 apt=98
    
a=rtpmap:100 H264/90000
    
a=rtcp-fb:100 goog-remb
    
a=rtcp-fb:100 transport-cc
    
a=rtcp-fb:100 ccm fir
    
a=rtcp-fb:100 nack
    
a=rtcp-fb:100 nack pli
    
a=fmtp:100 level-asymmetry-allowed=1;packetization-mode=1;profile-level-id=42001f
    
a=rtpmap:101 rtx/90000
    
a=fmtp:101 apt=100
    
a=rtpmap:102 H264/90000
    
a=rtcp-fb:102 goog-remb
    
a=rtcp-fb:102 transport-cc
    
a=rtcp-fb:102 ccm fir
    
a=rtcp-fb:102 nack
    
a=rtcp-fb:102 nack pli
    
a=fmtp:102 level-asymmetry-allowed=1;packetization-mode=0;profile-level-id=42001f
    
a=rtpmap:122 rtx/90000
    
a=fmtp:122 apt=102
    
a=rtpmap:127 H264/90000
    
a=rtcp-fb:127 goog-remb
    
a=rtcp-fb:127 transport-cc
    
a=rtcp-fb:127 ccm fir
    
a=rtcp-fb:127 nack
    
a=rtcp-fb:127 nack pli
    
a=fmtp:127 level-asymmetry-allowed=1;packetization-mode=1;profile-level-id=42e01f
    
a=rtpmap:121 rtx/90000
    
a=fmtp:121 apt=127
    
a=rtpmap:125 H264/90000
    
a=rtcp-fb:125 goog-remb
    
a=rtcp-fb:125 transport-cc
    
a=rtcp-fb:125 ccm fir
    
a=rtcp-fb:125 nack
    
a=rtcp-fb:125 nack pli
    
a=fmtp:125 level-asymmetry-allowed=1;packetization-mode=0;profile-level-id=42e01f
    
a=rtpmap:107 rtx/90000
    
a=fmtp:107 apt=125
    
a=rtpmap:108 H264/90000
    
a=rtcp-fb:108 goog-remb
    
a=rtcp-fb:108 transport-cc
    
a=rtcp-fb:108 ccm fir
    
a=rtcp-fb:108 nack
    
a=rtcp-fb:108 nack pli
    
a=fmtp:108 level-asymmetry-allowed=1;packetization-mode=1;profile-level-id=4d0032
    
a=rtpmap:109 rtx/90000
    
a=fmtp:109 apt=108
    
a=rtpmap:124 H264/90000
    
a=rtcp-fb:124 goog-remb
    
a=rtcp-fb:124 transport-cc
    
a=rtcp-fb:124 ccm fir
    
a=rtcp-fb:124 nack
    
a=rtcp-fb:124 nack pli
    
a=fmtp:124 level-asymmetry-allowed=1;packetization-mode=1;profile-level-id=640032
    
a=rtpmap:120 rtx/90000
    
a=fmtp:120 apt=124
    
a=rtpmap:123 red/90000
    
a=rtpmap:119 rtx/90000
    
a=fmtp:119 apt=123
    
a=rtpmap:114 ulpfec/90000
    
a=ssrc-group:FID 3747062777 227800175
    
a=ssrc:3747062777 cname:G/WgJ3Ijh9QR84NI
    
a=ssrc:3747062777 msid:je7s7e9RhWY3cMVjVn8y0ipyOgJnTgu1bMYd e64ec0a4-3603-40d3-a6c6-01c5e60c79ef
    
a=ssrc:3747062777 mslabel:je7s7e9RhWY3cMVjVn8y0ipyOgJnTgu1bMYd
    
a=ssrc:3747062777 label:e64ec0a4-3603-40d3-a6c6-01c5e60c79ef
    
a=ssrc:227800175 cname:G/WgJ3Ijh9QR84NI
    
a=ssrc:227800175 msid:je7s7e9RhWY3cMVjVn8y0ipyOgJnTgu1bMYd e64ec0a4-3603-40d3-a6c6-01c5e60c79ef
    
a=ssrc:227800175 mslabel:je7s7e9RhWY3cMVjVn8y0ipyOgJnTgu1bMYd
    
a=ssrc:227800175 label:e64ec0a4-3603-40d3-a6c6-01c5e60c79ef
    

    
13:32:00 [debug] [peer.cpp(329)] On SDP parse success
    
13:32:00 [debug] [peer.cpp(255)] Ivv61MFbOi96l__ZAAAB: Set local description
    
13:32:00 [debug] [peer.cpp(165)] Ivv61MFbOi96l__ZAAAB: On signaling state change: 0
    
13:32:00 [debug] [peer.cpp(329)] On SDP parse success
    
13:32:00 [debug] [peer.cpp(191)] Ivv61MFbOi96l__ZAAAB: On ICE gathering change: 1
    
13:32:00 [debug] [signaler.cpp(89)] Peer message: demo|Ivv61MFbOi96l__ZAAAB
    
13:32:00 [debug] [peermanager.cpp(85)] Received candidate: candidate:2999745851 1 udp 2122260223 192.168.56.1 60548 typ host generation 0 ufrag ICgM network-id 2
    
13:32:00 [debug] [peer.cpp(185)] Ivv61MFbOi96l__ZAAAB: On ICE connection change: 1
    
13:32:00 [debug] [signaler.cpp(89)] Peer message: demo|Ivv61MFbOi96l__ZAAAB
    
13:32:00 [debug] [peermanager.cpp(85)] Received candidate: candidate:564218470 1 udp 2122194687 100.64.100.204 60549 typ host generation 0 ufrag ICgM network-id 1 network-cost 10
    
13:32:00 [debug] [signaler.cpp(89)] Peer message: demo|Ivv61MFbOi96l__ZAAAB
    
13:32:00 [debug] [peermanager.cpp(85)] Received candidate: candidate:2999745851 1 udp 2122260223 192.168.56.1 60550 typ host generation 0 ufrag ICgM network-id 2
    
13:32:00 [debug] [signaler.cpp(89)] Peer message: demo|Ivv61MFbOi96l__ZAAAB
    
13:32:00 [debug] [peermanager.cpp(85)] Received candidate: candidate:564218470 1 udp 2122194687 100.64.100.204 60551 typ host generation 0 ufrag ICgM network-id 1 network-cost 10
    
13:32:00 [debug] [peer.cpp(191)] Ivv61MFbOi96l__ZAAAB: On ICE gathering change: 2
    
13:32:00 [debug] [signaler.cpp(89)] Peer message: demo|Ivv61MFbOi96l__ZAAAB
    
13:32:00 [debug] [peermanager.cpp(85)] Received candidate: candidate:4233069003 1 tcp 1518280447 192.168.56.1 9 typ host tcptype active generation 0 ufrag ICgM network-id 2
    
13:32:00 [debug] [signaler.cpp(89)] Peer message: demo|Ivv61MFbOi96l__ZAAAB
    
13:32:00 [debug] [peermanager.cpp(85)] Received candidate: candidate:1864545942 1 tcp 1518214911 100.64.100.204 9 typ host tcptype active generation 0 ufrag ICgM network-id 1 network-cost 10
    
13:32:00 [debug] [signaler.cpp(89)] Peer message: demo|Ivv61MFbOi96l__ZAAAB
    
13:32:00 [debug] [peermanager.cpp(85)] Received candidate: candidate:4233069003 1 tcp 1518280447 192.168.56.1 9 typ host tcptype active generation 0 ufrag ICgM network-id 2
    
13:32:00 [debug] [signaler.cpp(89)] Peer message: demo|Ivv61MFbOi96l__ZAAAB
    
13:32:00 [debug] [peermanager.cpp(85)] Received candidate: candidate:1864545942 1 tcp 1518214911 100.64.100.204 9 typ host tcptype active generation 0 ufrag ICgM network-id 1 network-cost 10
    
13:32:15 [debug] [peer.cpp(185)] Ivv61MFbOi96l__ZAAAB: On ICE connection change: 4```

    Error :

    [libx264 @ 0x7f415c001600] invalid level_idc: 8
    
12:00:14 [error] [multiplexencoder.cpp(153)] Error: Cannot open the video codec: Generic error in an external library
    
12:00:14 [error] [streamrecorder.cpp(87)] Failed to init encoder: std::exception

    How to resolve this error ?

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