FFMPEG захватить снимок изображения с RTSP IPCamera

Привет! Я могу успешно транслировать видео с моей IP-камеры с помощью VLC, используя URL: rtsp: //192.168.0.6: 554 / cam / realmonitor

При попытке использовать FFMPEG происходит сбой со следующими ошибками: Я приложил успешные VLC-соединения, а также разговор о сбойных FFMPEG-соединениях.

Как я могу заставить FFMPEG вести себя как VLC для успешного захвата потока?

Заранее благодарю за любую помощь

C:\ffmpeg-20150415-git-fbdaebb-win64-static\ffmpeg-20150415-git-fbdaebb-win64-static\bin>ffmpeg -i rtsp://admin:admin@192.168.0.6:554/cam/realmonitor -rtsp_transport tcp -f image2 -threads 4 -t 14400 -async 1 -r 1/5 -q 1.5 -vcodec mjpeg c:\Test.jpg ffmpeg version N-71455-gfbdaebb Copyright (c) 2000-2015 the FFmpeg developers built with gcc 4.9.2 (GCC) configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libdcadec --enable-libfreetype --enable-libgme --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --e nable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-l ibx265 --enable-libxavs --enable-libxvid --enable-lzma --enable-decklink --enable-zlib libavutil 54. 22.101 / 54. 22.101 libavcodec 56. 34.100 / 56. 34.100 libavformat 56. 30.100 / 56. 30.100 libavdevice 56. 4.100 / 56. 4.100 libavfilter 5. 14.100 / 5. 14.100 libswscale 3. 1.101 / 3. 1.101 libswresample 1. 1.100 / 1. 1.100 libpostproc 53. 3.100 / 53. 3.100 Invalid interval end specification '' [rtsp @ 0000000000330c40] Received packet without a start chunk; dropping frame. [mjpeg @ 0000000000312fa0] RTP: missed 14 packets [rtsp @ 0000000000330c40] Received packet without a start chunk; dropping frame. [mjpeg @ 0000000000312fa0] RTP: missed 14 packets [rtsp @ 0000000000330c40] Received packet without a start chunk; dropping frame. [mjpeg @ 0000000000312fa0] RTP: missed 14 packets [rtsp @ 0000000000330c40] Received packet without a start chunk; dropping frame. [mjpeg @ 0000000000312fa0] RTP: missed 14 packets [rtsp @ 0000000000330c40] Received packet without a start chunk; dropping frame. [mjpeg @ 0000000000312fa0] RTP: missed 14 packets [rtsp @ 0000000000330c40] Received packet without a start chunk; dropping frame. [mjpeg @ 0000000000312fa0] RTP: missed 14 packets [rtsp @ 0000000000330c40] Received packet without a start chunk; dropping frame. [mjpeg @ 0000000000312fa0] RTP: missed 14 packets [rtsp @ 0000000000330c40] Received packet without a start chunk; dropping frame. [mjpeg @ 0000000000312fa0] RTP: missed 14 packets [rtsp @ 0000000000330c40] Received packet without a start chunk; dropping frame. [mjpeg @ 0000000000312fa0] RTP: missed 14 packets [rtsp @ 0000000000330c40] Received packet without a start chunk; dropping frame. [mjpeg @ 0000000000312fa0] RTP: missed 14 packets [rtsp @ 0000000000330c40] Received packet without a start chunk; dropping frame. [mjpeg @ 0000000000312fa0] RTP: missed 14 packets [rtsp @ 0000000000330c40] Received packet without a start chunk; dropping frame. [mjpeg @ 0000000000312fa0] RTP: missed 14 packets [rtsp @ 0000000000330c40] Received packet without a start chunk; dropping frame. [mjpeg @ 0000000000312fa0] RTP: missed 14 packets [rtsp @ 0000000000330c40] Received packet without a start chunk; dropping frame. [mjpeg @ 0000000000312fa0] RTP: missed 14 packets [rtsp @ 0000000000330c40] Received packet without a start chunk; dropping frame. [mjpeg @ 0000000000312fa0] RTP: missed 14 packets [rtsp @ 0000000000330c40] Received packet without a start chunk; dropping frame. [mjpeg @ 0000000000312fa0] RTP: missed 14 packets [rtsp @ 0000000000330c40] Received packet without a start chunk; dropping frame. [mjpeg @ 0000000000312fa0] RTP: missed 14 packets [rtsp @ 0000000000330c40] Received packet without a start chunk; dropping frame. [mjpeg @ 0000000000312fa0] RTP: missed 14 packets [rtsp @ 0000000000330c40] Received packet without a start chunk; dropping frame. [mjpeg @ 0000000000312fa0] RTP: missed 14 packets [rtsp @ 0000000000330c40] Received packet without a start chunk; dropping frame. [mjpeg @ 0000000000312fa0] RTP: missed 14 packets [rtsp @ 0000000000330c40] Received packet without a start chunk; dropping frame. [mjpeg @ 0000000000312fa0] RTP: missed 14 packets [rtsp @ 0000000000330c40] Received packet without a start chunk; dropping frame. [rtsp @ 0000000000330c40] Could not find codec parameters for stream 0 (Video: mjpeg, none(bt470bg/unknown/unknown)): unspecified size Consider increasing the value for the 'analyzeduration' and 'probesize' options Guessed Channel Layout for Input Stream #0.1 : mono Input #0, rtsp, from 'rtsp://admin:admin@192.168.0.6:554/cam/realmonitor': Metadata: title : RTSP Session of ZheJiang Dahua Technology CO.,LTD. Duration: -187967:-4:-22.-32, start: 676681462.328875, bitrate: N/A Stream #0:0: Video: mjpeg, none(bt470bg/unknown/unknown), 90k tbr, 90k tbn, 90k tbc Stream #0:1: Audio: pcm_alaw, 8000 Hz, 1 channels, s16, 64 kb/s Codec AVOption threads () specified for output file #0 (c:\Test.jpg) has not been used for any stream. The most likely reason is either wrong type (e.g. a video option with no video str eams) or that it is a private option of some encoder which was not actually used for any stream. Output #0, image2, to 'c:\Test.jpg': Metadata: title : RTSP Session of ZheJiang Dahua Technology CO.,LTD. Output file #0 does not contain any stream Received signal 2: terminating. 

FFMPEG Wireshark разговор:

OPTIONS rtsp://192.168.0.6:554/cam/realmonitor RTSP/1.0  CSeq: 1  User-Agent: Lavf56.30.100    RTSP/1.0 401 Unauthorized  WWW-Authenticate: Basic realm="Dahua"  Server: Dahua Rtsp Server  Content-Length: 0  CSeq: 1    OPTIONS rtsp://192.168.0.6:554/cam/realmonitor RTSP/1.0  CSeq: 2  User-Agent: Lavf56.30.100  Authorization: Basic YWRtaW46YWRtaW4=    RTSP/1.0 200 OK  Server: Dahua Rtsp Server  Content-Length: 0  CSeq: 2  Public: OPTIONS,DESCRIBE,SETUP,PLAY,PAUSE,TEARDOWN,SET_PARAMETER    DESCRIBE rtsp://192.168.0.6:554/cam/realmonitor RTSP/1.0  Accept: application/sdp  CSeq: 3  User-Agent: Lavf56.30.100  Authorization: Basic YWRtaW46YWRtaW4=    RTSP/1.0 200 OK  Server: Dahua Rtsp Server  CSeq: 3  Content-Base: rtsp://192.168.0.6:554/cam/realmonitor/  Content-Type: application/sdp  Content-Length: 339  Cache-Control: must-revalidate  x-Accept-Dynamic-Rate: 1    v=0  o=- 2251938208 2251938208 IN IP4 0.0.0.0  s=RTSP Session of ZheJiang Dahua Technology CO.,LTD.  c=IN IP4 0.0.0.0  t=0 0  a=control:*  a=range:now-  a=packetization-supported:DH  m=video 0 RTP/AVP 26  a=control:trackID=0  a=framerate:25.000000  a=rtpmap:26 JPEG/90000  m=audio 0 RTP/AVP 8  a=control:trackID=1  a=rtpmap:8 PCMA/8000    SETUP rtsp://192.168.0.6:554/cam/realmonitor/trackID=0 RTSP/1.0  Transport: RTP/AVP/UDP;unicast;client_port=19420-19421  x-Dynamic-Rate: 0  CSeq: 4  User-Agent: Lavf56.30.100  Authorization: Basic YWRtaW46YWRtaW4=    RTSP/1.0 200 OK  Server: Dahua Rtsp Server  Content-Length: 0  CSeq: 4  Transport: RTP/AVP;unicast;client_port=19420-19421;server_port=20004-20005;ssrc=4BC14B3E  x-dynamic-rate: 1  Session: 1429257645838106;timeout=90    SETUP rtsp://192.168.0.6:554/cam/realmonitor/trackID=1 RTSP/1.0  Transport: RTP/AVP/UDP;unicast;client_port=19422-19423  x-Dynamic-Rate: 0  CSeq: 5  User-Agent: Lavf56.30.100  Session: 1429257645838106  Authorization: Basic YWRtaW46YWRtaW4=    RTSP/1.0 200 OK  Server: Dahua Rtsp Server  Content-Length: 0  CSeq: 5  Transport: RTP/AVP;unicast;client_port=19422-19423;server_port=20006-20007;ssrc=4BC14B29  x-dynamic-rate: 1  Session: 1429257645838106;timeout=90    PLAY rtsp://192.168.0.6:554/cam/realmonitor/ RTSP/1.0  Range: npt=0.000-  CSeq: 6  User-Agent: Lavf56.30.100  Session: 1429257645838106  Authorization: Basic YWRtaW46YWRtaW4=    RTSP/1.0 200 OK  Server: Dahua Rtsp Server  RTP-Info: url=trackID=0;seq=26201;rtptime=253800,url=trackID=1;seq=25939;rtptime=22560  Range: npt=0.000000-  Content-Length: 0  CSeq: 6  Session: 1429257645838106 

В Wireshark я вижу успешный разговор между VLC и IP-камерой.

RTSP/1.0 200 OK  Server: Dahua Rtsp Server  Content-Length: 0  CSeq: 5  Public: OPTIONS,DESCRIBE,SETUP,PLAY,PAUSE,TEARDOWN,SET_PARAMETER    DESCRIBE rtsp://192.168.0.6:554/cam/realmonitor RTSP/1.0  CSeq: 6  Authorization: Basic YWRtaW46YWRtaW4=  User-Agent: LibVLC/2.1.5 (LIVE555 Streaming Media v2014.05.27)  Accept: application/sdp    RTSP/1.0 200 OK  Server: Dahua Rtsp Server  CSeq: 6  Content-Base: rtsp://192.168.0.6:554/cam/realmonitor/  Content-Type: application/sdp  Content-Length: 339  Cache-Control: must-revalidate  x-Accept-Dynamic-Rate: 1    v=0  o=- 2251938209 2251938209 IN IP4 0.0.0.0  s=RTSP Session of ZheJiang Dahua Technology CO.,LTD.  c=IN IP4 0.0.0.0  t=0 0  a=control:*  a=range:now-  a=packetization-supported:DH  m=video 0 RTP/AVP 26  a=control:trackID=0  a=framerate:25.000000  a=rtpmap:26 JPEG/90000  m=audio 0 RTP/AVP 8  a=control:trackID=1  a=rtpmap:8 PCMA/8000    SETUP rtsp://192.168.0.6:554/cam/realmonitor/trackID=0 RTSP/1.0  CSeq: 7  Authorization: Basic YWRtaW46YWRtaW4=  User-Agent: LibVLC/2.1.5 (LIVE555 Streaming Media v2014.05.27)  Transport: RTP/AVP/TCP;unicast;interleaved=0-1    RTSP/1.0 200 OK  Server: Dahua Rtsp Server  Content-Length: 0  CSeq: 7  Transport: RTP/AVP/TCP;unicast;interleaved=0-1;ssrc=00AED19E  x-dynamic-rate: 1  Session: 1429217292541559;timeout=90    SETUP rtsp://192.168.0.6:554/cam/realmonitor/trackID=1 RTSP/1.0  CSeq: 8  Authorization: Basic YWRtaW46YWRtaW4=  User-Agent: LibVLC/2.1.5 (LIVE555 Streaming Media v2014.05.27)  Transport: RTP/AVP/TCP;unicast;interleaved=2-3  Session: 1429217292541559    RTSP/1.0 200 OK  Server: Dahua Rtsp Server  Content-Length: 0  CSeq: 8  Transport: RTP/AVP/TCP;unicast;interleaved=2-3;ssrc=00AED189  x-dynamic-rate: 1  Session: 1429217292541559;timeout=90    PLAY rtsp://192.168.0.6:554/cam/realmonitor/ RTSP/1.0  CSeq: 9  Authorization: Basic YWRtaW46YWRtaW4=  User-Agent: LibVLC/2.1.5 (LIVE555 Streaming Media v2014.05.27)  Session: 1429217292541559  Range: npt=0.000-    RTSP/1.0 200 OK  Server: Dahua Rtsp Server  RTP-Info: url=trackID=0;seq=47727;rtptime=253800,url=trackID=1;seq=5395;rtptime=22560  Range: npt=0.000000-  Content-Length: 0  CSeq: 9  Session: 1429217292541559    $......o...h........A..Z............. <BEGINING OF JPEG DATA FRAMES>