ffplay、rtsp和tcp传输协议

Question

我在使用ffplay连接到rtsp相机时遇到了问题。摄像机位于只允许TCP协议的路由器下。只有在同一网络中，我才能使用ffplay观看摄像机。所以，当我外出时，使用以下命令行

ffplay rtsp://address:554/onvif1

或者这个

ffplay -rtsp_transport tcp rtsp://address:554/onvif1

我不能看摄像机。这是最后一次播放的结果。

[rtsp @ 059ee680] Nonmatching transport in server reply  0B f=0/0
rtsp://address:554:/onvif1: Invalid data found when processing input

尝试使用VLC和我可以没有任何问题的摄像头，无论是当我在同一网络或当我出去。VLC输出显示VLC使用TCP。有人有什么建议吗？

Answer 1

当然，正如您在下面看到的，vlc工作没有任何问题。FFMpeg仅适用于本地相机，而不适用于远程摄像机。强制tcp作为rtsp协议似乎没有任何效果。

试图捕捉远程相机(不工作)

denis@tomcat:~/Scaricati/ffmpeg-git-20181227-amd64-static$ **./ffmpeg -v verbose -i rtsp://address:554/onvif1 a.avi**
ffmpeg version N-47834-gb5e0a0fe3a-static https://johnvansickle.com/ffmpeg/  Copyright (c) 2000-2018 the FFmpeg developers
  built with gcc 6.3.0 (Debian 6.3.0-18+deb9u1) 20170516
  configuration: --enable-gpl --enable-version3 --enable-static --disable-debug --disable-ffplay --disable-indev=sndio --disable-outdev=sndio --cc=gcc-6 --enable-fontconfig --enable-frei0r --enable-gnutls --enable-gmp --enable-gray --enable-libaom --enable-libfribidi --enable-libass --enable-libvmaf --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-librubberband --enable-libsoxr --enable-libspeex --enable-libvorbis --enable-libopus --enable-libtheora --enable-libvidstab --enable-libvo-amrwbenc --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libdav1d --enable-libxvid --enable-libzvbi --enable-libzimg
  libavutil      56. 25.100 / 56. 25.100
  libavcodec     58. 42.104 / 58. 42.104
  libavformat    58. 25.100 / 58. 25.100
  libavdevice    58.  6.101 / 58.  6.101
  libavfilter     7. 46.101 /  7. 46.101
  libswscale      5.  4.100 /  5.  4.100
  libswresample   3.  4.100 /  3.  4.100
  libpostproc    55.  4.100 / 55.  4.100
[tcp @ 0x5f86700] Starting connection attempt to address port 554

试图捕捉远程摄像机，迫使tcp (不工作)

denis@tomcat:~/Scaricati/ffmpeg-git-20181227-amd64-static$ **./ffmpeg -v verbose -rtsp_transport tcp -i rtsp://address:554/onvif1 a.avi**
ffmpeg version N-47834-gb5e0a0fe3a-static https://johnvansickle.com/ffmpeg/  Copyright (c) 2000-2018 the FFmpeg developers
  built with gcc 6.3.0 (Debian 6.3.0-18+deb9u1) 20170516
  configuration: --enable-gpl --enable-version3 --enable-static --disable-debug --disable-ffplay --disable-indev=sndio --disable-outdev=sndio --cc=gcc-6 --enable-fontconfig --enable-frei0r --enable-gnutls --enable-gmp --enable-gray --enable-libaom --enable-libfribidi --enable-libass --enable-libvmaf --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-librubberband --enable-libsoxr --enable-libspeex --enable-libvorbis --enable-libopus --enable-libtheora --enable-libvidstab --enable-libvo-amrwbenc --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libdav1d --enable-libxvid --enable-libzvbi --enable-libzimg
  libavutil      56. 25.100 / 56. 25.100
  libavcodec     58. 42.104 / 58. 42.104
  libavformat    58. 25.100 / 58. 25.100
  libavdevice    58.  6.101 / 58.  6.101
  libavfilter     7. 46.101 /  7. 46.101
  libswscale      5.  4.100 /  5.  4.100
  libswresample   3.  4.100 /  3.  4.100
  libpostproc    55.  4.100 / 55.  4.100
[tcp @ 0x5515740] Starting connection attempt to address port 554

使用vlc (works)

denis@tomcat:~/Scaricati/ffmpeg-git-20181227-amd64-static$ **vlc -v**
VLC media player 3.0.3 Vetinari (revision 3.0.3-1-0-gc2bb759264)
[000056417a4461a0] main libvlc: Esecuzione di vlc con l'interfaccia predefinita. Usa 'cvlc' per utilizzare vlc senza interfaccia.
[000056417a4da540] main playlist: playlist is empty
[00007fcd00000eb0] live555 demux warning: no data received in 10s. Switching to TCP
[00007fcd0000b2d0] main decoder error: buffer deadlock prevented
[000056417a505bf0] pulse audio output warning: starting late (-591 us)
[000056417a505bf0] main audio output warning: playback way too early (-260338): playing silence
[000056417a505bf0] main audio output warning: playback too late (67682): up-sampling
[000056417a505bf0] main audio output warning: playback too early (-60916): down-sampling
[000056417a505bf0] main audio output warning: playback way too early (-191284): playing silence
[000056417a505bf0] main audio output warning: playback way too late (252312): flushing buffers
[000056417a505bf0] pulse audio output warning: starting late (-5953 us)
[000056417a505bf0] main audio output warning: playback way too early (-701316): playing silence
[000056417a505bf0] main audio output warning: playback way too early (-332484): playing silence
[000056417a505bf0] main audio output warning: playback too late (125861): up-sampling
[000056417a505bf0] main audio output warning: playback way too late (297954): flushing buffers
[000056417a505bf0] main audio output warning: playback way too early (-993047): playing silence
[00007fcd0000b2d0] avcodec decoder warning: thread type 1: disabling hardware acceleration
[000056417a505bf0] main audio output warning: playback too late (107083): up-sampling
[000056417a505bf0] main audio output warning: playback way too late (235778): flushing buffers
[00007fcce0001cc0] egl_x11 gl error: cannot select OpenGL API
[000056417a505bf0] main audio output warning: playback way too early (-657714): playing silence
[000056417a505bf0] main audio output warning: playback way too late (238668): flushing buffers
[00007fccf8160b40] main video output warning: picture is too late to be displayed (missing 691 ms)
[00007fccf8160b40] main video output warning: picture is too late to be displayed (missing 491 ms)
[00007fccf8160b40] main video output warning: picture is too late to be displayed (missing 290 ms)
[00007fccf8160b40] main video output warning: picture is too late to be displayed (missing 89 ms)
[000056417a505bf0] main audio output warning: playback way too early (-652182): playing silence
[000056417a505bf0] main audio output warning: playback too late (72927): up-sampling
[000056417a505bf0] main audio output warning: playback too late (98876): up-sampling
[000056417a4da540] main playlist: end of playlist, exiting