Recherche avancée

Sur d’autres sites (10043)

• hey i need to download my coaching classes but they are using hls aes 128 bit encrypted streams. i downloaded m3u8 and all .ts files and found enc key

  19 mars 2023, par tinu one

  I downloaded all the .ts files using a python script but it is encrypted with aes 128.i found a encryption key (supposedly) under the network tab in developer options. I ran it through ffmpeg but got an error( invalid data found while processing ). I need these classes because they are going to remove it in may 2023. i am a noob to this and may have done step wrong. Please forgive me. I would deeply appreciate anyone who will help me find a solution to this problem. Thankyou.

  


  I downloaded all the .ts files and m3u8 file and put it inside a folder. I hosted the key file in localhost that I found under the preview tab of the network tab in developer options( it was named key/ after all and had characters which was not human readable. it also had the request URL similar to that inside the m3u8 file)because ffmpeg did not want to read the key file from my local pc. I edited the m3u8 file to access the key stored in local host and it read successfully. but it shows error( invalid data found while processing).

  


  encryption key from preview tab I found : Ø®¢Ù¦Aä [u
request url of the key : https://classes.brilliantpala.org/api/v2.5/video_contents/42475/key/

  


  unedited m3u8 file :

  


  #EXTM3U
#EXT-X-VERSION:3
#EXT-X-TARGETDURATION:19
#EXT-X-MEDIA-SEQUENCE:0
#EXT-X-KEY:METHOD=AES-128,URI="https://classes.brilliantpala.org/api/v2.4/encryption_key/40cd559c70c241699cfcda9072c4fb42/",IV=0x00000000000000000000000000000000
#EXTINF:11.680000,
video_0.ts
#EXTINF:10.000000,
video_1.ts
#EXTINF:10.000000,
etc etc..


  


  fetch("https://classes.brilliantpala.org/api/v2.5/video_contents/42475/key/", {
  "headers": {
    "accept": "*/*",
    "accept-language": "en-US,en;q=0.9",
    "sec-ch-ua": "\"Microsoft Edge\";v=\"111\", \"Not(A:Brand\";v=\"8\", \"Chromium\";v=\"111\"",
    "sec-ch-ua-mobile": "?0",
    "sec-ch-ua-platform": "\"Windows\"",
    "sec-fetch-dest": "empty",
    "sec-fetch-mode": "cors",
    "sec-fetch-site": "same-origin",
    "x-key": "5e5d8c5d0486a678ccd4935ecb9fa8a01b1db7327396184ab00b50573119e947"
  },
  "referrer": "https://classes.brilliantpala.org/courses/535/contents/42475/",
  "referrerPolicy": "strict-origin-when-cross-origin",
  "body": null,
  "method": "GET",
  "mode": "cors",
  "credentials": "include"
});```




  


• avfilter/vf_edgedetect : properly implement double_threshold()

  22 juin 2020, par Valery Kot

  avfilter/vf_edgedetect : properly implement double_threshold()
  Important part of this algorithm is the double threshold step : pixels
  
  above "high" threshold being kept, pixels below "low" threshold dropped,
  
  pixels in between (weak edges) are kept if they are neighboring "high"
  
  pixels.
  The weak edge check uses a neighboring context and should not be applied
  
  on the plane's border. The condition was incorrect and has been fixed in
  
  the commit.
  Signed-off-by : Andriy Gelman <andriy.gelman@gmail.com>
  
  Reviewed-by : Andriy Gelman <andriy.gelman@gmail.com>
  

  • [DH] libavfilter/vf_edgedetect.c
  • [DH] tests/ref/fate/filter-edgedetect
  • [DH] tests/ref/fate/filter-edgedetect-colormix

• x86/hevcdsp : add ff_hevc_sao_edge_filter_8_{ssse3,avx2}

  5 février 2015, par James Almer

  x86/hevcdsp : add ff_hevc_sao_edge_filter_8_ssse3,avx2
  Original x86 intrinsics code and initial yasm port by Pierre-Edouard Lepere.
  
  Refactoring and optimizations by James Almer.
  Benchmarks of BQTerrace_1920x1080_60_qp22.bin with an Intel Core i5-4200U
  Width 32
  
  158583 decicycles in edge, sao_edge_filter_8 runs, 0 skips
  
  5205 decicycles in ff_hevc_sao_edge_filter_32_8_ssse3, 32767 runs, 1 skips
  
  2942 decicycles in ff_hevc_sao_edge_filter_32_8_avx2, 32767 runs, 1 skips
  Width 64
  
  705639 decicycles in sao_edge_filter_8, 262144 runs, 0 skips
  
  19224 decicycles in ff_hevc_sao_edge_filter_64_8_ssse3, 262111 runs, 33 skips
  
  10433 decicycles in ff_hevc_sao_edge_filter_64_8_avx2, 262115 runs, 29 skips
  Signed-off-by : James Almer <jamrial@gmail.com>
  

  • [DH] libavcodec/hevc_filter.c
  • [DH] libavcodec/hevcdsp.c
  • [DH] libavcodec/hevcdsp.h
  • [DH] libavcodec/x86/hevc_sao.asm
  • [DH] libavcodec/x86/hevcdsp_init.c