Recherche avancée

Sur d’autres sites (15231)

• Live streaming .webm file with ffmpeg and nginx

  9 décembre 2017, par seekahead

  Hi I am new to ffmpeg and I need some help with live streaming of .webm file which is still being written into. I have a .webm file containing only video in vp9 codecwhich needs to be live streamed (preferably without transcoding and streamed using DASH`. I have compiled nginx along with nginx-ts-module from (https://github.com/arut/nginx-ts-module#features) with the following configuration

  nginx version: nginx/1.12.1
  
  built by gcc 4.8.4 (Ubuntu 4.8.4-2ubuntu1~14.04.3) 
  
  built with OpenSSL 1.0.1f 6 Jan 2014
  
  TLS SNI support enabled
  
  configure arguments: --with-cc-opt='-g -O2 -fPIE -fstack-protector --param=ssp-buffer-size=4 -Wformat -Werror=format-security -fPIC -D_FORTIFY_SOURCE=2' --with-ld-opt='-Wl,-Bsymbolic-functions -fPIE -pie -Wl,-z,relro -Wl,-z,now -fPIC' --prefix=/usr/share/nginx --conf-path=/etc/nginx/nginx.conf --http-log-path=/var/log/nginx/access.log --error-log-path=/var/log/nginx/error.log --lock-path=/var/lock/nginx.lock --pid-path=/run/nginx.pid --modules-path=/usr/lib/nginx/modules --http-client-body-temp-path=/var/lib/nginx/body --http-fastcgi-temp-path=/var/lib/nginx/fastcgi --http-proxy-temp-path=/var/lib/nginx/proxy --http-scgi-temp-path=/var/lib/nginx/scgi --http-uwsgi-temp-path=/var/lib/nginx/uwsgi --with-debug --with-pcre-jit --with-http_ssl_module --with-http_stub_status_module --with-http_realip_module --with-http_auth_request_module --with-http_v2_module --with-http_dav_module --with-http_slice_module --with-threads --with-http_addition_module --with-http_gunzip_module --with-http_gzip_static_module --with-http_sub_module --with-stream=dynamic --with-stream_ssl_module --with-stream_ssl_preread_module --with-mail=dynamic --with-mail_ssl_module --add-dynamic-module=/home/ubuntu/NGINX/nginx-ts-module-master

  The mediafile has the following properties(obtained with mediainfo) :

  General
  
  Complete name                            : video_4_1_Admin_0.webm
  
  Format                                   : WebM
  
  Format version                           : Version 2
  
  File size                                : 19.7 MiB
  
  Duration                                 : 1ms
  
  Overall bit rate                         : 165 Gbps
  
  Writing library                          : libwebm-0.2.1.0
  
  Video
  
  ID                                       : 1
  
  Format                                   : VP9
  
  Codec ID                                 : V_VP9
  
  Width                                    : 320 pixels
  
  Height                                   : 180 pixels
  
  Display aspect ratio                     : 16:9
  
  Frame rate mode                          : Variable
  
  Language                                 : English
  
  Default                                  : Yes
  
  Forced                                   : No

  I am trying to stream the file with the following

  ffmpeg -re -i video_4_1_Admin_0.webm -bsf:v vp9_superframe -c copy -f webm_chunk  http://127.0.0.1:8000/publish/sintel

  And I am getting the following error

  Input #0, matroska,webm, from 'video_4_1_Admin_0.webm':
  
    Metadata:
  
      encoder         : libwebm-0.2.1.0
  
    Duration: 00:00:00.00, start: 0.000000, bitrate: 174444152 kb/s
  
      Stream #0:0(eng): Video: vp9 (Profile 0), yuv420p(tv), 320x180, SAR 1:1 DAR 16:9, 30 fps, 30 tbr, 1k tbn, 1k tbc (default)
  
  Output #0, webm_chunk, to 'http://127.0.0.1:8000/publish/sintel':
  
  Output file #0 does not contain any stream

  I am not sure what are the exact options to be passed to ffmpeg so that it creates the .mpd and needed chunks which will allow me to LiveStream the media, I tried replacing the options given in the example (https://github.com/arut/nginx-ts-module#features) with what seems like vp9 equivalent., but, I am not sure. Can someone help me out here ? Thanks in advance

• FFmpeg streaming stuck few minutes after start [closed]

  19 février, par josue ramirez

  Sorry for my english ! :D

  


  I'm trying to make a live video stream from my webcam with ffmpeg using Node.

  


  I get the images or frames from ffmpeg via pipe1 on the stdout event and send them via a socket-io client to my angular app to play the stream.

  


  So far the stream starts fine and my angular app can play it fine, but after a certain time (8 minutes or so) ffmpeg stops sending data and the stream in my angular app stops and if I want to start the webcam again it's not possible anymore because it's apparently occupied by another process. I've been trying to figure out what's going on and what I've noticed is that the ffmpeg process just stops and the process is no longer visible with the top command (ubuntu), but the child process in node still shows a ffmpeg process as if it were a zombie process.

  


  I've tried running ffmpeg from the terminal to save an mp4 file with the stream and in that case there is no problem, the recording doesn't stop even using pipe1. Only when I run ffmpeg from my Node app, the error occurs.

  


  Does anyone have any idea what could be going on ?

  


  This command is the one that is executed to send the data through pipe1 both from node and from the terminal but it only stops in Node

  


  ffmpeg -f v4l2 -input_format mjpeg -video_size 800x600 -i /dev/video0 -q:v 4 -f image2pipe pipe1


  


  The same thing happens when saving an mp4 video only in Node it fails

  


  ffmpeg -f v4l2 -input_format mjpeg -video_size 800x600 -i /dev/video0 -q:v 4 video.mp4


  


  This is my function that starts the streaming

  


  export const startCamera = () => {
    logger.info('Starting camera ', cameraName);

    const inputFormat = process.platform === 'win32' ? 'dshow' : 'v4l2';

    const ffmpegArgs = [
        '-f', inputFormat, // Formato de entrada según la plataforma
    ];

    if (process.platform === 'linux') {
        ffmpegArgs.push(
            '-input_format', 'mjpeg',  // Especificar el formato antes de video_size
            '-video_size', '800x600',  // Tamaño de la imagen
        );
    }
    
    ffmpegArgs.push(
        '-i', cameraName,    // Dispositivo de entrada
        '-vf', 'fps=15',     // Fotogramas por segundo
        '-q:v', '10',        // Calidad de video
        '-f', 'image2pipe',  // Formato de salida
        'pipe:1'             // Salida por stdout
    );

    try {
        logger.info('FFmpeg command: ffmpeg', ffmpegArgs.join(' '));
        ffmpeg = spawn('ffmpeg', ffmpegArgs);
        let cameraOpen = false;
        // Enviar los datos del fotograma a través del WebSocket
        ffmpeg.stdout.on('data', (chunk) => {
            logger.debug(`Sending chunk of ${chunk.length} bytes`);
            if (!cameraOpen) {
                cameraOpen = true;
                serialConnection.connect();
                logger.info('Camera started!!');
            }

            if (streamWS.isActive()) {
                streamWS.send(chunk);
            }
        });
        // Manejo de errores
        ffmpeg.stderr.on('error', (data) => {
            logger.error('FFmpeg Error:', data.toString());
        });

        ffmpeg.on('close', async () => {
            logger.info('Camera closed....', cameraName);
            if (!cameraOpen) {
                await commandWS.send(
                    {
                        command: COMMANDS.START_STREAM,
                        isError: true,
                        response: `Error al intentar iniciar la camara ${cameraName}, verificar que la camara se encuentre bien conectada.`,
                    },
                    COMMANDS_EVENTS.ROBOT_RESPONSE
                );
            }
            cameraOpen = false;
            await serialConnection.close();
            stopCamera();
            await streamWS.disconnectWS();
        });
    } catch (e) {
        logger.error('Error tryng to start the camera...', e);
    }
};


  


• FFMPEG Removing audio from video makes the video short

  1er mai 2020, par Pratik Daigavane

  I was trying to remove audio from video using FFmpeg, the command I used is :

  



  ffmpeg -i video.mp4 -an -c copy no_sound.mp4


  



  But the length of the final video is less than the original video.

  



  Original Video Length - 0:05:43
Final Vidoe Length - 0:05:34

  



  Following is the output generated by FFmpeg :

  



      ffmpeg -i video.mp4 -an -c copy no_sound.mp4
ffmpeg version 4.2.2-1ubuntu1 Copyright (c) 2000-2019 the FFmpeg developers
  built with gcc 9 (Ubuntu 9.3.0-3ubuntu1)
  configuration: --prefix=/usr --extra-version=1ubuntu1 --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --arch=amd64 --enable-gpl --disable-stripping --enable-avresample --disable-filter=resample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libaom --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libcodec2 --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libjack --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librsvg --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-lv2 --enable-omx --enable-openal --enable-opencl --enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-nvenc --enable-chromaprint --enable-frei0r --enable-libx264 --enable-shared
  libavutil      56. 31.100 / 56. 31.100
  libavcodec     58. 54.100 / 58. 54.100
  libavformat    58. 29.100 / 58. 29.100
  libavdevice    58.  8.100 / 58.  8.100
  libavfilter     7. 57.100 /  7. 57.100
  libavresample   4.  0.  0 /  4.  0.  0
  libswscale      5.  5.100 /  5.  5.100
  libswresample   3.  5.100 /  3.  5.100
  libpostproc    55.  5.100 / 55.  5.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'video.mp4':
  Metadata:
    major_brand     : isom
    minor_version   : 512
    compatible_brands: isomiso2avc1mp41
    creation_time   : 1970-01-01T00:00:00.000000Z
    encoder         : Lavf52.64.2
  Duration: 00:05:42.96, start: 0.000000, bitrate: 99 kb/s
    Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 816x688 [SAR 1:1 DAR 51:43], 64 kb/s, 1.75 fps, 15 tbr, 15 tbn, 30 tbc (default)
    Metadata:
      creation_time   : 1970-01-01T00:00:00.000000Z
      handler_name    : VideoHandler
    Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 33 kb/s (default)
    Metadata:
      creation_time   : 1970-01-01T00:00:00.000000Z
      handler_name    : SoundHandler
Output #0, mp4, to 'no_sound.mp4':
  Metadata:
    major_brand     : isom
    minor_version   : 512
    compatible_brands: isomiso2avc1mp41
    encoder         : Lavf58.29.100
    Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 816x688 [SAR 1:1 DAR 51:43], q=2-31, 64 kb/s, 1.75 fps, 15 tbr, 15360 tbn, 15 tbc (default)
    Metadata:
      creation_time   : 1970-01-01T00:00:00.000000Z
      handler_name    : VideoHandler
Stream mapping:
  Stream #0:0 -> #0:0 (copy)
Press [q] to stop, [?] for help
frame=  584 fps=0.0 q=-1.0 Lsize=    2629kB time=00:05:34.53 bitrate=  64.4kbits/s speed=5.78e+04x    
video:2621kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.313674%


  



  Why is this happening ?

  



  orignal video file link