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• Decrypting .m3u8 AES 128 .drm file and IV

  26 septembre 2016, par Kishan

  Am trying to get the following video for offline viewing since my connection recently has been flakey.

  I’ve tried ffmpeg with the .m3u8 file but it says "invalid data" as the files are encrypted, I’ve been trying to read up on how to do it but can’t seem to find my exact scenario with this .drm file, everywhere they have the .key file. I’ve tried downloading each .ts and joining them which is fine but it is still encrypted, any help would be greatly appreciated.

  Link to site :
  https://www.my5.tv/eamonn-ruth-how-the-other-half-lives/season-2/episode-1

  The .m3u8 file starts like this :

  #EXTM3U
  
  #EXT-X-VERSION:3
  
  #EXT-X-TARGETDURATION:9
  
  #EXT-X-PLAYLIST-TYPE:VOD
  
  #EXT-X-FAXS-CM:URI="C5206830001A_1500.drm"
  
  
  
  #EXT-X-KEY:METHOD=AES-128,URI="https://access.adobeprimetime.com/faxsks/axs_prod/key",IV=0x82ecdecae409ca0fedae928a76725804
  
  #EXT-X-MEDIA-TIME:0.0
  
  #EXTINF:9,

• HEVC File bigger after converting from h264

  26 janvier 2019, par Aaroknight

  I’m currently working an an automated Python script for indexing and converting all my movies and episodes with ffmpeg. I use subprocess.call() for running the ffmpeg command and tested this command with some movies. As expected the big h264 files were converted to merely one third of what they used to have.

  But now that I was testing the method I found that a converted episode (about 400MB in h264) had over 1,6GB in hevc. I have absolutely no idea why the new file would be that much bigger in hevc.
  This is my code :

  def convert(path):
  
      outvid = path.strip(".mkv") + "h265.mkv"
  
  
  
      cmd = ["ffmpeg", "-i", path, "-map", "0", "-map_metadata", "0", "-map_chapters", "0", "-c:v", "libx265",
  
             "-c:a", "copy", "-c:s", "copy", "-preset", "ultrafast", "-x265-params", "lossless=1", outvid]
  
      subprocess.call(cmd)
  
  
  
  convert("/Volumes/2TB/Black Butler/Season 1/Black Butler S01E01.mkv")

  I don’t have that much experience with ffmpeg, nor with subprocess. This is one of my first bigger projects. I hope someone can tell me what the problem might be.

  UPDATE
  Problem applies only for small video files. I now just check for the file size and skip the small files. Wouldn’t have made much of a difference anyway.

  

• NVIDIA Version Outdated Error when mine is updated

  21 février 2021, par Agent Merlot

  I'm trying to encode stuff with my NVIDIA GeForce MX150 (Driver Version : 461.09).

  


  import os
os.system(f'ffmpeg -i "Cells at Work Season 2 - Episode 07 - English Subbed.mp4" -c:a copy -c:v hevc_nvenc "07.mp4"')

  


  Whenever I'm trying to run it, I'm getting this error.

  


  [hevc_nvenc @ 0000017a8bdf7e40] Cannot load nvEncodeAPI64.dll
[hevc_nvenc @ 0000017a8bdf7e40] The minimum required Nvidia driver for nvenc is 436.15 or newer
Error initializing output stream 0:0 -- Error while opening encoder for output stream #0:0 - maybe incorrect parameters such as bit_rate, rate, width or height
Conversion failed!

  


  What bugs me is that it says that I need 436.15 or newer, and mine is 461.09. That means it should work, right ? Can anyone help ?