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• webRTC issue converting from webm+wav to mp4

  16 janvier 2015, par DevStarlight

  After I got my .webm video and my .wav audio I decided to join it into an .mp4 file container.

  I followed the library of muaz-khan ffmpeg-asm.js to do this conversion but when It finished, I got the blob which apparently was empty of video but after I downloaded I could reproduce it on my windows media player.

  This is the code I have created for this test : jsfiddle

  Checking some other sources, I found that there is another guy who reported the problem directly to muaz-khan 1 month ago webrtc-experiment.com (Last comment).

  I don’t think it’s a problem related to conversion, I rather think is much more a problem of codecs.

  How could I solve this problem (if it’s possible to solve it) in order to watch my videos ?

  Thanks in advice.

• restreaming with ffmpeg and ffserver

  13 mars 2014, par Dnaso

  I have been looking all over stack and the net and cannot find the answer (or one that works for me anyway). I have a cerevo liveshell pro which is a video encoder (pretty damn good too). In its RTSP server mode, I am able to watch audio and video on iphone and android. However, It can only hold 3 connections. I want to restream this stream NO encoding of any type on ffserver. Is this possible ? Everything I have tried so far does not open. If I disable my audio in the config file it works and if i disable video and just push audio it works, but both will not. Also I do not want to use ffmpeg if I do not have to because I am not re encoding the stream, since it is already encoded in the correct format, I just want to restream it !.

   ffmpeg -i rtsp://xxx  -vcodec copy -acodec copy http://lclhst:8090/feed1.ffm
  
  
  
  
  
  <stream>
  
     format rtp
  
     videoCodec libx264
  
     AudioCodec aac
  
      I also have global headers for audio and video.
  
  </stream>

  has anyone been able to fix or surpass the issue ?

• Making youtube-dl download mp3's faster

  12 novembre 2017, par sciencelord

  It takes a long time to download mp3 songs using youtube-dl, and it takes even longer when downloading a bunch of mp3 songs. Is there a way to make it significantly faster ? I don’t mind reducing quality. I’ve been using the command below.

  youtube-dl --extract-audio --audio-format "mp3" --output "%(title)s.%(ext)s" "https://www.youtube.com/watch?v={videoid}

  I also took a look at this post :
  ffmpeg command for faster encoding at a decent bitrate with smaller file size

  But I wasn’t sure how to change the above command using the ffmpeg modifications.

  Thanks !