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• RTMP -> endoce using ffmpeg -> HLS,DASH

  1er juillet 2017, par Ubunkun

  I would like to do "RTMP -> endoce using ffmpeg -> HLS,DASH".

  ・OS: CentOS7
  
  ・nginx version: nginx/1.13.0
  
  　with nginx-rtmp-module
  
  ・ffmpeg
  
  ffmpeg version N-83692-gb8a7dcbde2-static http://johnvansickle.com/ffmpeg/  Copyright (c) 2000-2017 the FFmpeg developers
  
    built with gcc 5.4.1 (Debian 5.4.1-5) 20170205
  
    configuration: --enable-gpl --enable-version3 --enable-static --disable-debug --disable-ffplay --disable-indev=sndio --disable-outdev=sndio --cc=gcc-5 --enable-fontconfig --enable-frei0r --enable-gnutls --enable-gray --enable-libass --enable-libfreetype --enable-libfribidi --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libvidstab --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxvid --enable-libzimg
  
    libavutil      55. 47.100 / 55. 47.100
  
    libavcodec     57. 81.100 / 57. 81.100
  
    libavformat    57. 66.102 / 57. 66.102
  
    libavdevice    57.  3.100 / 57.  3.100
  
    libavfilter     6. 74.100 /  6. 74.100
  
    libswscale      4.  3.101 /  4.  3.101
  
    libswresample   2.  4.100 /  2.  4.100
  
    libpostproc    54.  2.100 / 54.  2.100
  
  
  
  /usr/local/nginx/conf/nginx.conf
  
  rtmp {
  
    server {
  
        listen 1935;
  
        application test {
  
          live on;
  
          exec /root/ffmpeg -i rtmp://localhost/test/$name
  
          -b:v 1000k -r 30 -s 720x480 -c:v libx264 -f flv rtmp://localhost/live/$name_low;
  
        }
  
        application live {
  
          live on;
  
          hls  on;
  
          hls_path /usr/local/nginx/html/hls;
  
          hls_fragment 10s;
  
          hls_type live;
  
          dash on;
  
          dash_path /usr/local/nginx/html/dash;
  
        }
  
    }
  
  }

  When I tried "rtmp ://domain.com/live/test1", it was success. There are some segment on hls and dash folder.

  But, When I teird "rtmp ://domain.com/test/test2", it was fail.

  In error.log

  2017/07/01 22:02:03 [alert] 23951#0 : unknown process 24019 exited on signal 9

  What wrong is setting ? If you know the cause of problem, let me know how to resolve it.

• Slow VP8 and VP9 encoding with ffmpeg

  25 mai 2019, par Kirill K

  I saw this answer, but it’s a little old. Maybe the situation has changed ?

  I want to re-encode a stream from an IP camera to WebM (VP8 or VP9) format with ffmpeg. I need real time speed, but my CPU is a Core i5 (2017) and too busy (load avarage too more 100%).

  • Can I buy hardware that is better suited for such an encoding task ?

  • What parametres for ffmpeg are recommended for transcoding in realtime ?

  At the moment I’m using this command (with overlay chroma key) :

  ./ffmpeg \
  
  -i \
  
  bg.jpg \
  
  -thread_queue_size 512 \
  
  -rtsp_transport tcp -i rtsp://ip_cam:port/stream \
  
  -codec:v libvpx -quality realtime -r 25 -crf 30 \
  
  -b:v 2M -qmin 10 -qmax 50 -maxrate 2.5M -bufsize 5M \
  
  -speed 1 \
  
  -b:v 2M \
  
  -cpu-used 0 -threads 4 \
  
  -auto-alt-ref 0 \
  
  -c:a libopus -b:a 96k \
  
  -filter_complex "[1:v]chromakey=0x70de77:0.1:0.0[ckout];[0:v][ckout]overlay[out]" \
  
  -map "[out]" \
  
  -f webm udp://ip_destination:1935/name/stream

• ffmpeg : Using tee with segmenter

  17 juillet 2024, par Lev

  I'm trying to use a tee to output my stream into 1min segments and into a file at the same time. Here's my command :

  



  ffmpeg -i "rtsp://${cameraIp}:554/axis-media/media.amp?videocodec=h264&resolution=1280x720&fps=15" -c copy -map 0 \
-f tee "[f=ssegment:segment_time=60:segment_format=mp4:reset_timestamps=1:r=15] ${rootPath}/${storeId}-${location}-%03d.mp4 \
| /tmp/${cameraIp}.mkv"


  



  Individually (without tee) both outputs work fine. So I can either output into segmented files or into a non-segmented file. But with the tee I get this error :

  



  


  [stream_segment,ssegment @ 0x217ece0] Failed to open segment '
 /etc/cida/diagnostics/vid/780801-99-000.mp4' [tee @ 0x217d820] Slave
 '[f=ssegment:segment_time=60:segment_format=mp4:reset_timestamps=1:r=15]
 /etc/cida/diagnostics/vid/780801-99-%03d.mp4' : error writing header :
 No such file or directory

  


  



  See full command output below. Any suggestions ?

  



  


  ffmpeg version 3.3 Copyright (c) 2000-2017 the FFmpeg developers
  
 built with gcc 4.8 (Ubuntu 4.8.4-2ubuntu1 14.04.3) configuration :
 —extra-libs=-ldl —prefix=/opt/ffmpeg —mandir=/usr/share/man —enable-avresample —disable-debug —enable-nonfree —enable-gpl —enable-version3 —enable-libopencore-amrnb —enable-libopencore-amrwb —disable-decoder=amrnb —disable-decoder=amrwb —enable-libpulse —enable-libfreetype —enable-gnutls —enable-libx264 —enable-libx265 —enable-libfdk-aac —enable-libvorbis —enable-libmp3lame —enable-libopus —enable-libvpx —enable-libspeex —enable-libass —enable-avisynth —enable-libsoxr —enable-libxvid —enable-libvidstab —enable-libwavpack —enable-nvenc libavutil 55. 58.100 / 55. 58.100 libavcodec 57. 89.100 / 57. 89.100 libavformat 57. 71.100 / 57. 71.100 libavdevice 57. 6.100 / 57. 6.100 libavfilter 6. 82.100 / 6. 82.100 libavresample 3. 5. 0 / 
 3. 5. 0 libswscale 4. 6.100 / 4. 6.100 libswresample 2. 7.100 / 2. 7.100 libpostproc 54. 5.100 / 54. 5.100 Input #0, rtsp, from 'rtsp ://10.83.245.7:554/axis-media/media.amp ?videocodec=h264&resolution=1280x720&fps=15' :
 Metadata :
 title : Session streamed with GStreamer
 comment : rtsp-server Duration : N/A, start : 0.080011, bitrate : N/A
 Stream #0:0 : Video : h264 (Main), yuvj420p(pc, bt709, progressive), 1280x720 [SAR 1:1 DAR 16:9], 25 tbr, 90k tbn, 180k tbc
 [stream_segment,ssegment @ 0x217ece0] Failed to open segment '
 /etc/cida/diagnostics/vid/780801-99-000.mp4' [tee @ 0x217d820] Slave
 '[f=ssegment:segment_time=60:segment_format=mp4:reset_timestamps=1:r=15]
 /etc/cida/diagnostics/vid/780801-99-%03d.mp4' : error writing header :
 No such file or directory [tee @ 0x217d820] Slave muxer #0 failed,
 aborting. Could not write header for output file #0 (incorrect codec
 parameters ?) : No such file or directory Stream mapping : Stream #0:0
 -> #0:0 (copy)
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