[FFmpeg-user] FFMPEG RTSP stream problem

[Asbóth Bence]

Hi!

Maybe authentication takes so long? Try to keep the stream open, eg with
VLC.

Talán az autentikáció tart ilyen sokáig? Próbáld meg, hogy folyamatosan
nyitva tartod a stream-et, pl.VLC-vel.

Balogh László <laci at blacc.hu> ezt írta (időpont: 2022. ápr. 7., Cs, 12:14):

> Hi to All,
>
> I'm new in this mailing list, so first thanks to letting me in. :)
>
> I have an RTSP stream which framerate is 1/16, which means every 16 sec
> a frame is transported through RTSP. This framerate is because of a
> special purpose, cannot and want not to change it.
>
> What i want is to save every frame of this video as single JPEG image on
> my server (Linux). Here the full command, which is working in bash script:
>
> ffmpeg -rtsp_transport tcp -i
> 'rtsp://<USERNAME>:(PASSWORD>@<IPADDRESS>:556/h264/ch1/maiv_stream' -f
> image2 -vframes 1 -pix_fmt yuvj420p /<PATH>/$datetoday/$today.jpeg
>
> The $datetoday ad $today variables are declared in the script, and the
> ffmpeg command is started again right after it is closing.
>
> So, the script is working, i get the images, which are fine. BUT! Every
> ffmoeg process takes about 2 minutes! So i get images about every 2
> minutes. How can is speed up the ffmpeg command?  What i see while the
> script is running that after the following screenshot, its waiting about
> 2 minutes. But don't know why?
>
> ffmpeg version 3.4.8-0ubuntu0.2 Copyright (c) 2000-2020 the FFmpeg
> developers
>    built with gcc 7 (Ubuntu 7.5.0-3ubuntu1~18.04)
>    configuration: --prefix=/usr --extra-version=0ubuntu0.2
> --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu
> --incdir=/usr/include/x86_64-linux-gnu --enable-gpl --disable-stripping
> --enable-avresample --enable-avisynth --enable-gnutls --enable-ladspa
> --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca
> --enable-libcdio --enable-libflite --enable-libfontconfig
> --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm
> --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg
> --enable-libopenmpt --enable-libopus --enable-libpulse
> --enable-librubberband --enable-librsvg --enable-libshine
> --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh
> --enable-libtheora --enable-libtwolame --enable-libvorbis
> --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265
> --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi
> --enable-omx --enable-openal --enable-opengl --enable-sdl2
> --enable-libdc1394 --enable-libdrm --enable-libiec61883
> --enable-chromaprint --enable-frei0r --enable-libopencv --enable-libx264
> --enable-shared
>    libavutil      55. 78.100 / 55. 78.100
>    libavcodec     57.107.100 / 57.107.100
>    libavformat    57. 83.100 / 57. 83.100
>    libavdevice    57. 10.100 / 57. 10.100
>    libavfilter     6.107.100 /  6.107.100
>    libavresample   3.  7.  0 /  3.  7.  0
>    libswscale      4.  8.100 /  4.  8.100
>    libswresample   2.  9.100 /  2.  9.100
>    libpostproc    54.  7.100 / 54.  7.100
>
> And after that its finishing with the following lines:
>
> Input #0, rtsp, from
> 'rtsp://rtspuser:rtSP7221@192.168.1.203:556/h264/ch1/maiv_stream':
>    Metadata:
>      title           : Media Presentation
>    Duration: N/A, start: 94.881000, bitrate: N/A
>      Stream #0:0: Video: h264 (Main), yuvj420p(pc, bt709, progressive),
> 2688x1520, 1 fps, 1 tbr, 90k tbn, 2 tbc
> Stream mapping:
>    Stream #0:0 -> #0:0 (h264 (native) -> mjpeg (native))
> Press [q] to stop, [?] for help
> Output #0, image2, to
> '/home/mcll/RTSP/2022-04-07/2022-04-07_12_09_30.jpeg':
>    Metadata:
>      title           : Media Presentation
>      encoder         : Lavf57.83.100
>      Stream #0:0: Video: mjpeg, yuvj420p(pc), 2688x1520, q=2-31, 200
> kb/s, 1 fps, 1 tbn, 1 tbc
>      Metadata:
>        encoder         : Lavc57.107.100 mjpeg
>      Side data:
>        cpb: bitrate max/min/avg: 0/0/200000 buffer size: 0 vbv_delay: -1
> frame=    1 fps=0.0 q=5.8 Lsize=N/A time=00:00:01.00 bitrate=N/A
> speed=11.5x
> video:125kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB
> muxing overhead: unknown
>
> So no error, nothing.
>
> Can anyone help me?
>
> Thank you!
>
> Regards, Laszlo
>
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-- 
üdv.B