Recherche avancée

Sur d’autres sites (12864)

• QML multimedia cannot play m3u8 that is generated with ffmpeg

  5 juin 2023, par LeXela-ED

  With the following command, I am trying to stream an IP camera over web :

  


  ffmpeg -re -i "rtsp://<user>:<password>@<ip>:<port>" -c:v copy -c:a copy -hls_segment_type mpegts -hls_list_size 5 -hls_wrap 5 -hls_time 2 -hls_flags split_by_time -segment_time_delta 1.00 -reset_timestamps 1 -hls_allow_cache 0 -movflags faststart live.m3u8```&#xA;</port></ip></password></user>

  


  This command, produces live.m3u8 and five ts files : live0.ts, live1.ts, live2.ts, live3.ts, and live4. And conversion goes smoothly. At some random point, the content of live.m3u8 is as follows :

  


  #EXTM3U
#EXT-X-VERSION:3
#EXT-X-TARGETDURATION:2
#EXT-X-MEDIA-SEQUENCE:92
#EXTINF:2.000000,
live2.ts
#EXTINF:2.000000,
live3.ts
#EXTINF:2.035800,
live4.ts
#EXTINF:2.000000,
live0.ts
#EXTINF:1.963278,
live1.ts


  


  However, when I tried to play live.m3u8 with the following QML code, it only played a very first segments of it :

  


  import QtQuick 2.15
import QtQuick.Window 2.15
import QtQuick.Controls 2.15
import QtQuick.Layouts 1.15
import QtMultimedia 5.15

Window
{
    width: 640
    height: 480
    visible: true

    Item
    {
        anchors.fill: parent

        MediaPlayer
        {
            id: mediaplayer
            source: "path-to-live/live.m3u8"
            videoOutput: videoOutput
        }

        VideoOutput
        {
            id: videoOutput
            anchors.fill: parent
        }

        MouseArea
        {
            anchors.fill: parent
            onPressed: mediaplayer.play();
        }
    }
}



  


  The interesting thing is : I manually deleted live.m3u8, and obviously, ffmpeg generated another one after ! Then I clicked on the QML program window, and surprisingly, it played the stream nonstop as it was expected at the first run !

  


  What is the problem here ? What I am missing ? Should I change the ffmpeg command or do something with my qml code ? Any idea or help ?

  


  Thank you in advance.

  


• Play h.264 video stream in html page

  12 juin 2017, par e2l3n

  I am using ffmpeg and vlc on linux to produce MPEG transport stream (mpegts) over HTTP. Basically ffmpeg captures the screen and produces h.264 stream using mpegts and then vlc is used as a server that delivers the stream over http. That’s how I manage to accomplish this.

  ffmpeg -f x11grab -s 1280x800 -r 30 -i :0.0+0,0  -f alsa -ac 2 -i pulse -vcodec libx264 -preset ultrafast -s 1280x800 -threads 0 -f mpegts - | vlc -I dummy - --sout '#std{access=http,mux=ts,dst=:3030}

  And some useful log about the resulting stream :

  Output #0, mpegts, to 'pipe:':
  
    Metadata:
  
      encoder         : Lavf57.72.101
  
      Stream #0:0: Video: h264 (libx264), yuv444p(progressive), 1280x800, q=-1--1, 30 fps, 90k tbn, 30 tbc
  
      Metadata:
  
        encoder         : Lavc57.96.101 libx264
  
      Side data:
  
        cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
  
      Stream #0:1: Audio: mp2, 48000 Hz, stereo, s16, 384 kb/s
  
      Metadata:
  
        encoder         : Lavc57.96.101 mp2

  All looks good except for that I am unable to play the stream in a HTML page. Could someone point me at some solution to either render the stream in HTML page or change the stream type so that it gets rendered.
  Thank you in advance !

  EDIT :
  I’ve noticed something weird. The <video></video> fails to play mp4 files on Firefox (51.0.1) for Ubuntu (I have also tested on Windows 8 with Chrome).
  I simply use ffmpeg to record screen for 10 seconds and produce .mp4 video (see below).

  ffmpeg -video_size 1280x800 -framerate 25 -f x11grab -i :0.0+0,0 -t 00:00:10 ~/Workspace/videostream/output.mp4

  And then play the output.mp4 video with the following snippet.

  <video width="480" height="320" controls="controls">
  
      <source src="output.mp4" type="video/mp4">
  
  </source></video>

  This simply does not play although I can open the video with any other media player. The media info (using MediaInfo, v0.7.96) of the output.mp4 file is :

  GENERAL: MPEG-4 (Base Media): 1.007 MiB, 10s 0ms; 1 Video stream: AVC; Overall bit rate: 825 Kbps; Writing application: Lavf57.72.101
  
  VIDEO: 2 343 Kbps, 1280*800(16:10), at 25.000 fps, MPEG Video (Version 2) (Main@High 1440)

  However, if I replace the output.mp4 with any other .mp4 file, it does play in Firefox. So, this leads me to conclude that it is not a browser issue but something with the way I exploit ffmpeg. Below is the media info of a proper .mp4 file that successfully runs in the browser.

  GENERAL: MPEG-4 (Base Media/Version 2): 48.4 MiB, 2mn 50s; 1 Video stream: AVC; 1 Audio stream: AAC; Overall bit mode rate: Variable; Overall bit rate: 2 385 Kbps;
  
  VIDEO: 2 256 Kbps, 1280*720(16:9), at 25.000 fps, AVC (Main@L3.1) (CABAC / 3 Ref Frames); ISO media produced by Google Inc.
  
  AUDIO:
  
  126 Kbps, 44.1 KHz, 2 channels, AAC (LC), ISO media produced by Google Inc.

  And here is the media info of the output file that results from redirecting the h.264 mpegts stream using the ffmpeg command with -pix_fmt yuv420p ./ffmpeg -t 00:00:10 -f x11grab -s 1280x800 -r 30 -i :0.0+0,0 -pix_fmt yuv420p -vcodec libx264 -preset ultrafast -s 1280x800 -threads 0 -f mpegts - > ~/Workspace/file.ts :

  GENERAL: MPEG-TS: 2.93 MiB, 9s 960ms; 1 Video stream: MPEG Video; 1 Menu stream: MPEG Video; Overall bit rate mode: Variable; Overall bit rate: 2 465 Kbps; 
  
  VIDEO: 2 343 Kbps, 1280*800(16:10), at 25.000 fps, MPEG Video (Version 2) (Main@High 1440)

• ffplay does not play an RTMP stream on VM with Ubuntu

  7 novembre 2020, par PiotrKulesza

  I am trying to run my RTMP stream on a VM with Ubuntu installed. The stream starts on the host computer from the obs program.

  


  Obs stream settings :

  


  Server: rtmp://192.168.56.102:1935/show
Stream key: stream


  


  Obs sends the stream to the nginx server on the VM with Ubuntu installed.

  


  RTMP configuration in nginx.conf

  


  rtmp {
    server {
        listen 1935; # Listen on standard RTMP port
        chunk_size 4000;

        application show {
            live on;
            # Turn on HLS
            hls on;
            hls_path /mnt/hls/;
            hls_fragment 3;
            hls_playlist_length 60;
            # disable consuming the stream from nginx as rtmp
            deny play all;
        }
    }
}


  


  When I start the stream it connects because it shows up in netstat.

  


  Output from netstat :

  


  Active Internet connections (w/o servers)
Proto Recv-Q Send-Q Local Address           Foreign Address         State      
tcp        0      0 webapp-VirtualBox:1935  192.168.56.1:56924      ESTABLISHED


  


  But when I try to play stream with ffplay, it doesn't work. I am getting the following error.

  


  ffplay version 4.2.4-1ubuntu0.1 Copyright (c) 2003-2020 the FFmpeg developers
  built with gcc 9 (Ubuntu 9.3.0-10ubuntu2)
  configuration: --prefix=/usr --extra-version=1ubuntu0.1 --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
rtmp://192.168.56.102:1935/show/stream: Broken pipeq=    0B f=0/0 


  


  I have tried the following commands to play a stream but each one gives the same error.

  


  ffplay -i rtmp://192.168.56.102:1935/show/stream
ffplay -i rtmp://webapp-VirtualBox:1935/show/stream
ffplay -i rtmp://localhost:1935/show/stream


  


  I also tried VLC but this program also didn't work.
Can anyone tell me what I am doing wrong or forgot to play this stream ?