Recherche avancée

Sur d’autres sites (8703)

• What parameter should I use to generate the video with best size & quality ?

  12 juin 2022, par Stor

  I'm a newbie in ffmpeg video streaming commands and have little knowledge on what parameters to use. I've had a look at https://ffmpeg.org/ffmpeg-all.html but it seems the parameters for .mpd is too complicated for me to understand.. Could any of you please help me figure out what "-map" parameter I should use ?

  


  Thank you so much !

  


  ffmpeg -protocol_whitelist "file,http,https,tcp,tls" -i "https://b1-rbsov-bbc.live.bidi.net.uk/vod-dash-uk/usp/auth/vod/piff_abr_full_sd/efa33d-p07gdmxh/vf_p07gdmxh_6d849b9a-1ebc-41d4-a8ea-635089b0bce6.ism/pc_hd_abr_v2_dash_master.mpd?at=hbiK4Lzvdea9f95eadf79dcc2a9d03dac2d3b4ef425094435e13cfc50e2c0" -codec copy "Faigh a-mach mu Alasdair III na h-Alba agus mar a dh'adhbharaich a bhàs Cogaidhean Saorsa na h-Alba.mp4"


  


  This is the mpd file :

  


  I can't seem to paste the .mpd file content in my post, can you please refer to the screenshot below :

  


  SCREENSHOT1
SCREENSHOT2

  


  I'm trying to download the largest video but I don't know which parameters to pass to the ffmpeg command..

  


        


  


  Thank you so much for your help :)

  


  Stor

  


• FFMPEG HLS live stream doesn't include webvtt caption/subtitles

  1er février 2023, par Pit Digger

  I have following cmd that is generating a live stream from a vod file. I have webvtt file for the vod file. But when running following command it doesnt generated a fragmented webvtt.

  


  C:\projects\vod-as-live\tmp> ffmpeg -i c:/video_test/output_english.mp4 -i C:\VIDEO_TEST\subtitles_en.vtt -c copy -c:s webvtt -filter_complex "[0:v]split=3[v1][v2][v3]; [v1]copy[v1out]; [v2]scale=w=1280:h=720[v2out]; [v3]scale=w=640:h=360[v3out]" \
    -map [v1out] -c:v:0 libx264 -x264-params "nal-hrd=cbr:force-cfr=1" \
    -b:v:0 2M -maxrate:v:0 2M -minrate:v:0 2M -bufsize:v:0 10M -preset fast -g 48 -sc_threshold 0 -keyint_min 48 -map [v2out] -c:v:1 libx264 -x264-params "nal-hrd=cbr:force-cfr=1" \
    -b:v:1 1M -maxrate:v:1 1M -minrate:v:1 1M -bufsize:v:1 1M -preset fast -g 48 -sc_threshold 0 -keyint_min 48 -map [v3out] -c:v:2 libx264 -x264-params "nal-hrd=cbr:force-cfr=1" \
    -b:v:2 500K -maxrate:v:2 500K -minrate:v:2 500K -bufsize:v:2 500K -preset fast -g 48 -sc_threshold 0 -keyint_min 48 \
    -map a:0 -c:a:0 aac -b:a:0 96k -ac 2 -map a:0 -c:a:1 aac -b:a:1 96k -ac 2 -map a:0 -c:a:2 aac -b:a:2 48k -ac 2 \
    -f hls -hls_time 6 -hls_list_size 10 -hls_flags independent_segments -hls_segment_type mpegts -hls_segment_filename stream_%v_data%02d.ts -master_pl_name master.m3u8 -var_stream_map "v:0,a:0 v:1,a:1 v:2,a:2" stream_%v.m3u8


  


  If I try following link it works and I see a vtt playlist and related vtt fragments generated fine. https://ffmpeg.org/pipermail/ffmpeg-user/2016-October/034006.html

  


• ffmpeg channels don't work (PHP)

  15 avril 2016, par Y.Saad

  I have a lot of channels with " ffmpeg " (4 channels) that start automatically, I create a code for show the first channel and after 5 seconds show the second .. Etc All things as right but I have a small problem the seconds channel doesn’t start automatically, I need to make stop to the first channel

  Code for 4 channel work 100% but without function for show first channel and after 5 seconds show the second ... Etc

  <?php
  
  
  
  ffmpeg -i http://clay24.webhop.net:8000/live/mario/mario/13.ts -i http://clay24.webhop.net:8000/live/mario/mario/12.ts -i http://clay24.webhop.net:8000/live/mario/mario/10.ts -map 0 -c:a aac -b:a 64k -strict -2 -preset fast -crf 25 -vcodec libx264 -f flv rtmp://178.33.231.108:1989/mylive/1 -map 1 -c:a aac -b:a 64k -strict -2 -preset fast -crf 25 -vcodec libx264 -f flv rtmp://178.33.231.108:1989/mylive/21 -map 2 -c:a aac -b:a 64k -strict -2 -preset fast -crf 25 -vcodec libx264 -f flv rtmp://178.33.231.108:1989/mylive/24
  
  
  
  ?>

  the second code with functions

  <?php
  
  echo'
  
      <code class="echappe-js">&lt;script&gt;<br />
  
  <br />
  
                  window.addEventListener(&quot;load&quot;, function() {<br />
  
  <br />
  
  var urls = iframes = [ &quot;'; ffmpeg -i http://mygameravatar.zapto.org:43666/live/test1/test2/81.ts -c:a aac -b:a 64k -preset fast -crf 25 -vcodec libx264 -f flv rtmp://178.33.231.108:1989/mylive/2 <br />
  
          echo '];<br />
  
  <br />
  
  var iframes = document.querySelectorAll(&quot;div&quot;);<br />
  
  <br />
  
  var n = 0;<br />
  
  <br />
  
  var interval = setInterval(function() {<br />
  
    <br />
  
    iframes[++n].src = urls[n - 1];<br />
  
    iframes[n].style.display = &quot;block&quot;;<br />
  
    console.log(n);<br />
  
    if (n === iframes.length -1) {<br />
  
      clearInterval(interval);<br />
  
      console.log(&quot;all iframes loaded&quot;)<br />
  
    }<br />
  
    <br />
  
  }, 5000)<br />
  
  <br />
  
  })<br />
  
          &lt;/script&gt;
  
  	’ ;
  	ffmpeg -i http://mygameravatar.zapto.org:43666/live/test1/test2/297.ts -c:a aac -b:a 64k -preset fast -crf 25 -vcodec libx264 -f flv rtmp ://178.33.231.108:1989/mylive/1
  	echo ’
  
  ’ ;
  
   ?>