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• Use a video editing library (not executable) via Node [on hold]

  25 septembre 2018, par Merc

  I need to edit clips using node. I am looking around, and most (if not all) libraries seem (like Fluent FFMpeg) seem to be based on the fact that they run FFMPEG as an executable and get the resulting output.

  That’s not what I want. I worked with FFMPEG executable in the past, and I know how flaky it is in terms of return codes and error codes.

  Ideally, I would love to find a native library for video editing and make calls using node.

  In terms of libraries :

  • Gstreamer
  • FFmpeg/LibAV (does they come with C libraries to bind to ?)
  • libVLC

  In terms of binding with them :

  • node-gir. Gstreamer seems to have updated git files

  • native bindings. For example Gstreamer has gstreamer-superficial. I couldn’t find any javascript bindings forFFMPEG — only "run the executable and hope for the best" libraries

  • VLC has a bindings library that is quite old and had its last commit years ago.

  Am I getting this all wrong ?
  My ideal outcome is to have a nice, robust library that I use directly using node, but my lack of experience in terms of using native libraries, and the somehow fragmented world of video editing libraries.

• Add FUNDING.json

  19 juin, par Michael Niedermayer

  Add FUNDING.json
  We have been contacted by Monet du Plessis of the etherium foundation and
  
  Natascha Buck (Grants at the Better Internet Foundation)
  "The Ethereum Foundation is thrilled to inform you that your contribution to
  
   open-source software development through your work on ffmpeg
  
   https://github.com/FFmpeg/FFmpeg  has been recognized and rewarded by the
  
   Devcon team ! Your project played a fundamental role in the success of Devcon
  
   <http://devcon.org/>, helping to create a more meaningful experience for
  
   the Ethereum community. In collaboration with Drips Network
  
   <https://www.drips.network/>, we are pleased to award you $2,240.00 in
  
   appreciation of your efforts and to support your continued efforts in
  
   open-source development."
  To be able to claim donations through the drips network we need to
  
  specify a wallet to do so in FUNDING.json
  This will also allow FFmpeg to receive future funding and donations
  
  through the drips network.
  The specified wallet is a safe wallet backed by a ledger hw wallet.
  
  We can later change who controls the safe wallet. (For example it
  
  could be passed on to the SPI treasurer)
  Signed-off-by : Michael Niedermayer <michael@niedermayer.cc>
  

  • [DH] FUNDING.json

• FFMPEG video editing application. Need time and date stamp burned into video

  11 mai 2022, par Jacob

  I am developing an application for video editing. The main component of this application is to produce a single video file from several video files captured from a camcorder with the time and date stamp displayed on the final rendered video, much like the final product from a security camera. I have figured out, by using FFMPEG, how to burn the date and time into the video with a .SRT file as well as with DrawText like the following :

  


  ffmpeg -y -i video.mp4 -vf “drawtext=fontfile=roboto.ttf:fontsize=12:fontcolor=yellow:text='%{pts\:localtime\:1575526882\:%A, %d, %B %Y %I\\\:%M\\\:%S %p}'" -preset ultrafast -f mp4 output_new.mp4    


  


  I would rather use the DrawText method so the user does not have to wait longer while creating the .SRT files. I am new to FFMPEG and I find their documentation very confusing. I guess I am hoping there is someone out there who has experience with it.

  


  Everything seems to work when I pass in the date created meta data from the video file and drawtext just does its thing. The problem is my application allows for editing of the video. I do this, for lack of better solution, by allowing the user to select beginning and ending frames they do not want, from the UI and then the code simply deletes the frames from the directory where they were split and saved. I then use FFMPEG to iterate through the directory and combine the remaining frames to make a video file.

  


  This approach starts the time and date from the date created metadata ; however, cutting the frames out of the video will make the DT stamp inaccurate, due to the missing frames.

  


  Is there any way to tell FFMPEG to burn in the date and time from date/time retrieved from each individual frame ? I appreciate any advice that you may have.