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• Slicing video on several short clips of different lengths in one go

  1er décembre 2019, par Igniter

  I’ve got time codes using which I want to slice a short MP4 video (average length 5-7 minutes)

  [ 0, 15, 35, 52, 142, 215, ...] // time codes in seconds

  Usually there are 5-7 time codes meaning that I need to create 5-7 clips out of my initial video
  The fist clip is from start to 15 sec, the second one is from 15 sec to 35 sec, 35-52, etc.

  It’s trivial operation in Bash but I’m using ffmpeg on NodeJS and I’d like to do it without iteration in one go

  // Slicing a single clip
  
  ffmpeg -i input.mp4 -ss 0 -to 15 -c copy clip-01.mp4
  
  
  
  // Same command in NodeJS
  
  ffmpeg(`/tmp/${id}/input.mp4`)
  
    .renice(5)
  
    .outputOptions([
  
      '-ss 0',
  
      '-to 15',
  
      '-c copy'
  
    ])
  
    .on('end', () => {})
  
    .on('error', (e, stdout, stderr) => {})
  
    .save(`/tmp/${id}/clip-01.mp4`);

  No need for re-encoding, no need for precise timestamps (1 second out of sync is OK)
  Any thoughts or ideas would be greatly appreciated !

• avcodec/cuviddec : Add support for decoding HEVC 4:4:4 content

  7 octobre 2018, par Philip Langdale

  avcodec/cuviddec : Add support for decoding HEVC 4:4:4 content
  This is the equivalent change for cuviddec after the previous change
  
  for nvdec. I made similar changes to the copying routines to handle
  
  pixel formats in a more generic way.
  Note that unlike with nvdec, there is no confusion about the ability
  
  of a codec to output 444 formats. This is because the cuvid parser is
  
  used, meaning that 444 JPEG content is still indicated as using a 420
  
  output format.
  

  • [DH] libavcodec/cuviddec.c

• FFMPEG run time error

  17 mai 2014, par saif

  I added FFMPEG to the references and the build is succeeded but when i run this error is appear

  Could not load file or assembly ’AForge.Video.FFMPEG.dll’ or one of
  its dependencies. The specified module could not be found.

  Looked at the Aforge page
  http://www.aforgenet.com/framework/docs/html/4ee1742c-44d3-b250-d6aa-90cd2d606611.htm and Find this..

  Make sure you have FFmpeg binaries (DLLs) in the output folder of your
  application in order to use this class successfully. FFmpeg binaries
  can be found in Externals folder provided with AForge.NET framework’s
  distribution.

  But I did not understand the meaning of it and how can I do that whether it is the reason of error