Recherche avancée

Sur d’autres sites (9861)

• How run 2 script python in same time ?

  28 février 2021, par FoxFr

  I explain my need : i wish to run ffmpeg with a python script (that's ok) but i need to know of the script is launched with a blink led connected on the GPIO of my RPI, But i dont know why i can launch my script and start le blink (or just a led on)

  


  Can u help me ? show me the light, please ;)

  


  import RPi.GPIO as GPIO
import time
import os

GPIO.setwarnings(False)
GPIO.setmode(GPIO.BCM)
GPIO.setup(4, GPIO.OUT)
GPIO.setup(22,GPIO.IN)

# fonction qui fait clignoter la led 
def blink(led):
        GPIO.output(led,True)
        time.sleep(0.5)
        GPIO.output(led,False)
        time.sleep(1)

# input of the switch will change the state of the LED
while 1:
        if ( GPIO.input(22) == True ):
                print "start broadcast"
                os.system("sudo /home/pi/videopi/webcam.sh")
                blink(4) << not ok like this !
                time.sleep(1)


  


• Video streaming from file system

  20 novembre 2019, par shah ghani

  I am trying to make a video server, my scenario is users will upload there files and I have a screen that will play all the files of the day like advertisement that we usually watch in our televisions.

  So far I have achieved .hls and .flv streaming through node media server.

  I have found the best way to stream a file is through FFMPEG, but I am unable to stream multiple files on same output url for example localhost:8000/index.m3u8, Can any one suggest me the right way to stream the next file when FFMPEG ends streaming of a previous file.

  Thanks in advance. :)

  My node media service config

  {
  
    rtmp: {
  
      port: 1935,
  
      chunk_size: 60000,
  
      gop_cache: true,
  
      ping: 30,
  
      ping_timeout: 60
  
    },
  
    http: {
  
      port: 8000,
  
      mediaroot: './media',
  
      allow_origin: '*'
  
    },
  
    trans: {
  
      ffmpeg: 'E:/Red Matrix/node-stream-master/node-stream-master/usr/bin/ffmpeg.exe',
  
      tasks: [
  
        {
  
          app: 'live',
  
          hls: true,
  
          hlsFlags: '[hls_time=2:hls_list_size=3:hls_flags=delete_segments]',
  
          dash: true,
  
          dashFlags: '[f=dash:window_size=3:extra_window_size=5]'
  
        }
  
      ]
  
    }
  
  };

  FFMPEG stream function

  function ffmpegStream(stream){
  
  
  
    var proc = ffmpeg()
  
    .input('D:/Videos/1.MP4')
  
      .on('error', function (err) {
  
        console.log('An error occurred: ' + err.message);
  
      })
  
      .on('end', function (e) {
  
  
  
        console.log('Processing end !' + JSON.stringify(this));
  
  
  
         ffmpegStream('D:/Videos/2.MP4')
  
      })
  
      .on('done', function() {
  
        console.log('Processing finished !');
  
  
  
      })
  
      .save('./media/live/abc/index.m3u8');
  
  }

• Where to store the .mpd file on django to play on a dash player ?

  3 janvier 2019, par enigmaVada

  I am trying to build a video player on django. I am using MPEG-DASH for adaptive streaming of the video file. I have chosen a sample video in the beginning. Then, using ffmpeg commands, I have encoded the video into 240p, 360p, 480p and 720p videos. Also have encoded audio separately.

  Then, using mp4box, I have generated the .mpd file. I have read that mpd files cannot be run from the local file system and need to be hosted on a server. I have a dash player setup as follows :

    
  
      
  
      
  
      <code class="echappe-js">&lt;script src=&quot;https://cdn.dashjs.org/latest/dash.all.min.js&quot;&gt;&lt;/script&gt;
  
         
     
  

  The url in the src field is a random manifest file that i used to test the player out. It works fine.

  Then, on my django project, I have created a media folder which stores the media files uploaded via a form(root included in settings.py).
  My question is where do i store the video, audio and .mpd file so that i can play them using the html code which resides in the templates folder. I have tried using the media url of .mpd file in the source but I am unable to play the video.

  Here is the generated mpd file for reference :

  <?xml version="1.0"?>
  
  
  
  <mpd xmlns="urn:mpeg:dash:schema:mpd:2011" minbuffertime="PT1.500S" type="static" mediapresentationduration="PT0H1M9.869S" maxsegmentduration="PT0H0M9.985S" profiles="urn:mpeg:dash:profile:isoff-on-demand:2011,http://dashif.org/guidelines/dash264">
  
   <programinformation moreinformationurl="http://gpac.io">
  
    
  
   </programinformation>
  
  
  
   <period duration="PT0H1M9.869S">
  
    <adaptationset segmentalignment="true" lang="und" subsegmentalignment="true" subsegmentstartswithsap="1">
  
     <representation mimetype="audio/mp4" codecs="mp4a.40.2" audiosamplingrate="44100" startwithsap="1" bandwidth="130920">
  
      <audiochannelconfiguration schemeiduri="urn:mpeg:dash:23003:3:audio_channel_configuration:2011" value="2"></audiochannelconfiguration>
  
      <baseurl>sample_audio_dashinit.mp4</baseurl>
  
      <segmentbase indexrangeexact="true" indexrange="902-1017">
  
        <initialization range="0-901"></initialization>
  
      </segmentbase>
  
     </representation>
  
    </adaptationset>
  
    <adaptationset segmentalignment="true" group="1" maxwidth="426" maxheight="240" maxframerate="30" par="426:240" lang="und" subsegmentalignment="true" subsegmentstartswithsap="1">
  
     <representation mimetype="video/mp4" codecs="avc1.640015" width="426" height="240" framerate="30" sar="1:1" startwithsap="1" bandwidth="590708">
  
      <baseurl>sample_video_240_dashinit.mp4</baseurl>
  
      <segmentbase indexrangeexact="true" indexrange="914-1053">
  
        <initialization range="0-913"></initialization>
  
      </segmentbase>
  
     </representation>
  
    </adaptationset>
  
    <adaptationset segmentalignment="true" group="1" maxwidth="640" maxheight="480" maxframerate="30" par="4:3" lang="und" subsegmentalignment="true" subsegmentstartswithsap="1">
  
     <representation mimetype="video/mp4" codecs="avc1.64001E" width="480" height="360" framerate="30" sar="1:1" startwithsap="1" bandwidth="883873">
  
      <baseurl>sample_video_360_dashinit.mp4</baseurl>
  
      <segmentbase indexrangeexact="true" indexrange="914-1053">
  
        <initialization range="0-913"></initialization>
  
      </segmentbase>
  
     </representation>
  
     <representation mimetype="video/mp4" codecs="avc1.64001E" width="640" height="480" framerate="30" sar="1:1" startwithsap="1" bandwidth="1188712">
  
      <baseurl>sample_video_480_dashinit.mp4</baseurl>
  
      <segmentbase indexrangeexact="true" indexrange="913-1052">
  
        <initialization range="0-912"></initialization>
  
      </segmentbase>
  
     </representation>
  
    </adaptationset>
  
    <adaptationset segmentalignment="true" group="1" maxwidth="1280" maxheight="720" maxframerate="30" par="16:9" lang="und" subsegmentalignment="true" subsegmentstartswithsap="1">
  
     <representation mimetype="video/mp4" codecs="avc1.64001F" width="1280" height="720" framerate="30" sar="1:1" startwithsap="1" bandwidth="2365717">
  
      <baseurl>sample_video_720_dashinit.mp4</baseurl>
  
      <segmentbase indexrangeexact="true" indexrange="914-1053">
  
        <initialization range="0-913"></initialization>
  
      </segmentbase>
  
     </representation>
  
    </adaptationset>
  
   </period>
  
  </mpd>