Newest 'ffmpeg' Questions - Stack Overflow

Les articles publiés sur le site

• C++ video processing loop

  15 mars 2018, par Oleksiy Druzhynin

  I want to write an application which takes a video stream and in the cycle do processing frames and fragments of audio.

  I saw such loop here:

  I saw on the forums some solution with pipes here

  Is it any library wrapper on ffmpeg/avlib which I could just write my callback without tones of spaghetti around like here

• ffmpeg -ss and -to commands encoding via API calls

  15 mars 2018, par DM1974

  When calling ffmpeg from the dll's how do I achieve the following:

  C:\ffmpeg\bin>ffmpeg -y -i input.mp4 -ss 00:20:20 -to 00:30:00 -c co py test.mp4

  What API's methods do I need to call?

• Can FFMPEG encrypt mp4 content using AES 128 encryption ?

  15 mars 2018, par Fayas B

  I am new to encryption processes. I wanted to know if I can encrypt a mp4 video file using ffmpeg with AES 128 protocol. I was able to encrypt mp4 files using CENC protocol using the following command:

  ffmpeg -i testvideo.mp4 -vcodec copy -acodec copy -encryption_scheme cenc-aes-ctr -encryption_key 76a6c65c5ea762046bd749a2e632ccbb -encryption_kid a7e61c373e219033c21091fa607bf3b8 testvideo_encrypted.mp4

  Does CENC have a connection with AES? Also can someone explain how a AES 128 encryption for mp4 files using ffmperg can be done.

• ffmpeg - how to remove audio from video in laravel

  15 mars 2018, par kodfire

  ffmpeg -i input_file.mp4 -an -vcodec copy output_file.mp4
  

  How can I change it to something like this below?

  FFMpeg::fromDisk('local')
  ->open($filePath.$fileName)
  ->export()
  ->toDisk('local')
  ->inFormat(new \FFMpeg\Format\Video\X264('libmp3lame', 'libx264'))
  ->save($converted);
  

• Input command for real time video streaming with ffmpeg

  15 mars 2018, par Eric Marchetti Santos

  My real time application renders an image into a byte[] every frame and I want to feed it into a RTP video stream using ffmpeg. However, the tutorials/documentations I find either refer to a device or application (-i video="Some device") or to files in the hard drive. Is it possible to send the frame data from code to a ffmpeg stream?