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• ffmpeg encoded video has video/audio sync delay when uploading to Facebook & WhatsApp

  13 décembre 2019, par royherma

      "fluent-ffmpeg": "^2.1.2",
  
      "ffmpeg": "^0.0.4",
  
      node : 8

  Code to reproduce

  let command = ffmpeg()
  
          .input(tempFilePath)
  
          .input(watermarkFilePath)
  
          .complexFilter([
  
              "[0:v][1:v]overlay=W-w-20:H-h-20"
  
          ])
  
          .videoBitrate(2500)
  
          .videoCodec('libx264')
  
          .audioCodec('aac')
  
          .format('mp4')
  
          .output(targetTempFilePath)

  When applying the ffmpeg encoding command on the attached video, it plays fine on a local device - the issue however is when uploading to Facebook/WhatsApp the audio/video becomes out of sync

  Any ideas on what i need to change in terms of the video/audio settings so that the audio + video are in sync, even when uploaded to the various social networks ?

  Here’s a link to the 3 video files (original, post ffmpeg, post whatsapp upload that includes delay) if you want to get a better idea !

  https://wetransfer.com/downloads/445dfaf0f323a73c56201b818dc0267b20191213052112/24e635

  Thank you and appreciate any help !!

• Looking for a free alternative RTSP server for Node.js [closed]

  2 juin 2020, par Maoration

  I'm looking at running my node.js server as an RTSP streaming server, as well as an http server. the ability to get some ffmpeg video output to stream as rtsp to 'localhost' (which will be the server listening), and for multiple clients to request a stream from the server via the rtsp ://... protocol

  



  The most common online implementation is :
https://www.npmjs.com/package/rtsp-streaming-server

  



  However, this is licensed under GPL-3.0, meaning my product would have to be open-source, or I'll be violating the terms of use. I'm afraid thats not possible..

  



  Other common results when searching for a solution are :

  



  https://www.npmjs.com/package/rtsp-server
which just seems to wrap to lower level rtsp protocol messages.

  



  https://www.npmjs.com/package/node-media-server
which provides solutions to many use cases, but I couldnt figure out how to configure it as an RTSP server, or if this would even be possible.

  



  So, any alternatives ? other suggestions ?

  


• Revision e68c8dcfd2 : Substantial restructuring of AQ mode 2. The restructure moves the decision into

  27 novembre 2014, par Paul Wilkins

  Changed Paths :
   Modify /vp9/encoder/vp9_aq_complexity.c

  
   Modify /vp9/encoder/vp9_aq_complexity.h

  
   Modify /vp9/encoder/vp9_encodeframe.c

  
   Modify /vp9/encoder/vp9_encoder.c

  
   Modify /vp9/encoder/vp9_encoder.h

  
  
  Substantial restructuring of AQ mode 2.

  The restructure moves the decision into the rd pick
  modes loop and makes a decision based at the 16x16
  block level instead of only the 64x64 level.

  This gives finer granularity and better visual results
  on the clips I have tested. Metrics results are worse
  than the old AQ2 especially for PSNR and this mode
  now falls between AQ0 and AQ1 in terms of visual
  impact and metrics results.

  Further tuning of this to follow.

  It should be noted that if there are multiple iterations
  of the recode loop the segment for a MB could change
  in each loop if the previous loop causes a change in the
  complexity / variance bin of the block. Also where a block
  gets a delta Q this will alter the rd multiplier for this block
  in subsequent recode iterations and frames where the
  segmentation is applied.

  Change-Id : I20256c125daa14734c16f7cc9aefab656ab808f7