Recherche avancée

Sur d’autres sites (12345)

• Issue with video.js playing AES encrypted video

  2 septembre 2021, par r3dge

  I'm trying to use video.js to play an encrypted HLS video. The AES 128 encryption has been done using this method : FFmpeg video encryption

  


  Here is the html code :

  


  &#xA;    &#xA;    <source src="http://192.168.56.1/enc/prog_index.m3u8" type="application/x-mpegURL">&#xA;</source>

  
 
 
 


  Video.js is loaded using CDN :

  


  <code class="echappe-js">&lt;script src=&quot;https://unpkg.com/video.js/dist/video.js&quot;&gt;&lt;/script&gt;&#xA;&#xA;&#xA;&lt;script src=&quot;https://unpkg.com/@videojs/http-streaming/dist/videojs-http-streaming.js&quot;&gt;&lt;/script&gt;&#xA;

  


  The player is loading and appears in the browser but the video can not be played.

  


  I get two warnings in the console :

  


  video.js:159 VIDEOJS : WARN : A plugin named "reloadSourceOnError" already exists. You may want to avoid re-registering plugins !

  


  VIDEOJS : WARN : Problem encountered with playlist 0-http://192.168.56.1/enc/prog_index.m3u8. Trying again since it is the only playlist.

  


  Server side i'm using Apache with Symphony 5. The server return a HTTP 200 status for the first ts file of the video. When i press the play button of the player seems to retry downloading. It get a 200 each time but the video is not played.

  


  Update : i tried to play the same video without encryption and it works. The problem seems to be due to the encryption itself.

  


  Thanks in advance for any help on that issue.

  


• How to make ffmpeg respect the "start_time" variable when combining cdg and mp3 ?

  5 juillet 2020, par Steffen Poulsen

  I'm trying to combine two .cdg and .mp3 files because I want to make a single .mkv file out of them.

  



  When I do it I get a .mkv file alright, but the audio is unfortunately not synced with the video.

  



  So, I was wondering why this is ? Apparently I must be missing a parameter on my command or something.

  



  What I do is this :

  



  ffmpeg -y -i song.cdg -i song.mp3 -pix_fmt yuv420p -vcodec libx264 -acodec copy song.mkv


  



  It works fine, but in this particular case the result is out of sync by 1.2 seconds. This varies per song, from 0 to a couple of seconds.

  



  However, if I do a ffprobe on the .cdg file I notice that this number is already present, as the "start_time" variable :

  



  ffprobe -v error -show_format -show_streams song.cdg
...
start_time=1.186667
...


  



  So, if I just use this number directly as this for the -itsoffset parameter :

  



  ffmpeg -y -itsoffset 1.186667 -i song.cdg -i song.mp3 -pix_fmt yuv420p -vcodec libx264 -acodec copy song.mkv


  



  Then the video and audio is in perfect sync.

  



  So, I am wondering - what parameter do I need to add to my command to have ffmpeg respect this variable ?

  


• audio of second video is missing after combining video

  2 avril 2021, par Captain_Zaraki

  I am trying to concat 2 videos but audio of second video is missing -

  


  ffmpeg -i  1.mp4 -i 1.mp4 -filter_complex '[0]scale=1280:720,setsar=1[v0];[1]scale=1280:720,setsar=1[v1];[v0][v1]concat=n=2:v=1:a=0' -vsync 2  output.mp4


  


  if I set a=1 then it is giving an error-

  


  [Parsed_setsar_3 @ 0x564e387d0340] Media type mismatch between the 'Parsed_setsar_3' filter output pad 0 (video) and the 'Parsed_concat_4' filter input pad 1 (audio)
[AVFilterGraph @ 0x564e3888fac0] Cannot create the link setsar:0 -> concat:1
Error initializing complex filters.