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• I am able to write certain metadata information to a .m4v file but not all using ffmpeg

  14 janvier 2014, par user3193123

  For example use this code

  ffmpeg -i avatar.m4v -metadata title="Avatar" -metadata artist="James Cameron" -metadata     description="Long Long Ago…" acodec copy -vcodec copy -y /Users/Anand/Desktop/anand.m4v

  Works perfectly fine !!!

  But i am not able to write metadata information such as Rating, Actors(Cast), Producers etc.. because i dont know the keywords or the keywords don't exist ?

  Any body know the keyword for them or can't i write them ?

• lavc/dds : replace rint by lrint

  26 décembre 2015, par Ganesh Ajjanagadde

  lavc/dds : replace rint by lrint
  avoids float to int cast.
  Signed-off-by : Ganesh Ajjanagadde <gajjanagadde@gmail.com>
  

  • [DH] libavcodec/dds.c

• Directly response video to the client for download when ffmpeg cutting the video

  7 mars 2023, par web disiner

  I am bulding a web application using Node.js with Express framework. That simply cut the video and send to the client browser as a response for download. For cutting a video i use FFmpeg tool.
all things working fine but ffmpeg cutted video save to working directory.

  


  Below is my code..

  


  const child_process= require("child_process")

const cutting =async()=>{
    ffmpeg = child_process.spawn('ffmpeg', [

        "-i", /video.mp4,
         "-ss", "00:02:20",
         "-to","00:02:50",
         "-c:v", "copy", 
         "-c:a", "copy", 
         "output3.mp4"






    ])
    ffmpeg.stderr.on('data', function(data) {
            console.log('ffmpeg stderr data = '+data );
      });

}


  


  This is image of working directory

  


  Now i want when **ffmpeg cutting the video it directly send chunks of video to the client for download **without saving it in working directory or server where my code is hosted.

  


  How can i do this ? which approch will useful for this ?
Anyone help me. much appreciated
Thanks